19,490 results match your criteria Journal of colloid and interface science[Journal]


Interfacial tension gradient driven self-assembly of binary colloidal particles for fabrication of superhydrophobic porous films.

J Colloid Interface Sci 2019 Apr 15;548:312-321. Epub 2019 Apr 15.

Department of Mechanical Engineering, Tsinghua University, Beijing 100084, PR China. Electronic address:

Hypothesis: Self-assembly of two types of particles into the binary colloidal crystals (BCCs) leads to the peculiar features which the monocomponent colloidal crystals do not possess. However, the self-assembly methods of the BCCs are still limited.

Experiments: A facile, cost-effective and controllable approach was presented to fabricate the BCCs by directly dripping silica particle suspensions containing water and ethanol into the monodisperse polytetrafluoroethylene (PTFE) colloidal solutions. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.039DOI Listing

Boosting photocatalytic hydrogen evolution achieved by rationally designed/constructed carbon nitride with ternary cobalt phosphosulphide.

J Colloid Interface Sci 2019 Apr 15;548:303-311. Epub 2019 Apr 15.

School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, PR China; Ningxia Key Laboratory of Solar Chemical Conversion Technology, North Minzu University, Yinchuan 750021, PR China; Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China. Electronic address:

Photocatalytic hydrogen production has been emerged as a promising method to solve the issue of energy shortage, however, how to design high-performance photocatalysts is an urgent problem. Recently, cobalt phosphosulfide (CoPS) has been confirmed to be an effective catalyst for energy conversion and storage. Nevertheless, combining the CoPS with other non-metallic catalysts for efficient photocatalytic hydrogen production has rarely reported. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.045DOI Listing

Graphitic carbon nitride grown in situ on aldehyde-functionalized α-FeO: All-solid-state Z-scheme heterojunction for remarkable improvement of photo-oxidation activity.

J Colloid Interface Sci 2019 Apr 12;548:284-292. Epub 2019 Apr 12.

Key Laboratory of Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Ministry of Education, Nanjing 210094, PR China.

Aldehyde-functionalized α-FeO/graphitic carbon nitride (α-FeO-DBD/g-CN) was successfully synthesized through Schiff-based reaction between aromatic aldehydes in 3,4-dihydroxybenzaldehyde and NH groups in urea. The 3,4-dihydroxybenzaldehyde around α-FeO were advantageous to in situ growth of graphitic carbon nitride on α-FeO to form the contact interface by chemical bonds and beneficial to the electron transfer, leading to the formation of Z-scheme photocatalytic system. The α-FeO-DBD/g-CN photocatalysts exhibited a remarkable improvement in the degradation of bisphenol A (BPA) compared with bulk g-CN. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.035DOI Listing

Hierarchical fabrication Z-scheme photocatalyst of BiVO (0 4 0)-Ag@CdS for enhanced photocatalytic properties under simulated sunlight irradiation.

J Colloid Interface Sci 2019 Apr 15;548:293-302. Epub 2019 Apr 15.

School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, PR China.

Interfacial charge separation and heterojunction system are conductive to improving its photocatalytic performance. Herein, we designed a novel photocatalyst of Z-scheme BiVO (0 4 0)-Ag@CdS, in which Ag was photo-deposition on the (0 4 0) facets of BiVO as the "linker" between BiVO and CdS. Characterizations of XRD and SEM clearly revealed that the BiVO (0 4 0)-Ag@CdS was prepared through hierarchical fabrication. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.043DOI Listing

Self-coacervation of ampholyte polymer chains as an efficient encapsulation strategy.

J Colloid Interface Sci 2019 Apr 13;548:275-283. Epub 2019 Apr 13.

Université de Bordeaux, Bordeaux INP, ISM, UMR 5255, Site ENSCBP, 16 avenue Pey Berland, 33607 Pessac, France.

Coacervation is a phase separation process involving two aqueous phases, one solute-phase and one solute-poor phase. It is frequently observed among oppositely-charged polyelectrolyte systems. In this study, we focus on self-coacervation involving a single polymer chain and investigate its potential for encapsulation applications. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.033DOI Listing

Fabrication of ultramicroporous triphenylamine-based polyaminal networks for low-pressure carbon dioxide capture.

J Colloid Interface Sci 2019 Apr 12;548:265-274. Epub 2019 Apr 12.

CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.

Three triphenylamine-based polyaminal networks (TMPs) with monodispersed ultramicropore (about 0.54 nm) and abundant doped-nitrogen (up to 42.88 wt%) are successfully prepared through the direct polycondensation of triphenylamine-based aldehydes with melamine. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.036DOI Listing

Fabrication of visible-light-active Bi/BiOI-BiO composite with enhanced photocatalytic activity.

J Colloid Interface Sci 2019 Apr 15;548:255-264. Epub 2019 Apr 15.

School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China. Electronic address:

Plasmonic Bi modified BiOI-BiO composite (Bi/BiOI-BiO) was prepared via in situ UV reduction method. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) techniques were carried out to identify the formation of semimetal Bi. The results indicated that the dot-like bismuth particles were originated from the partial reduction of lattice Bi to Bi by accumulated conduction band electrons in BiOI-BiO. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00219797193046
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http://dx.doi.org/10.1016/j.jcis.2019.04.044DOI Listing
April 2019
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Amino acid conformations control the morphological and chiral features of the self-assembled peptide nanostructures: Young investigators perspective.

J Colloid Interface Sci 2019 Apr 6;548:244-254. Epub 2019 Apr 6.

State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao, China. Electronic address:

Hypothesis: A variety of nanostructures with different chiral features can be self-assembled from short peptides with highly similar sequences. We hypothesize that these supramolecular nanostructures are ruled by the constituent amino acid residues which adopt their conformations under the influence of intra-/inter-molecular interactions during peptide self-assembly.

Approach: Through reviewing recent advances in the self-assembly of short peptides and focusing on the relationship between amino acid conformations, peptide secondary structures and intra-/inter-molecular interactions within the supramolecular architectures, we aim to rationalize the complex interactive processes involved in the self-assembly of short, designed peptides. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.019DOI Listing

Hierarchical zinc oxide/reduced graphene oxide composite: Preparation route, mechanism study and lithium ion storage.

J Colloid Interface Sci 2019 Apr 15;548:233-243. Epub 2019 Apr 15.

Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China. Electronic address:

A novel and simple approach to preparing hierarchical zinc oxide/reduced graphene oxide (ZnO/RGO@RGO) composite is demonstrated using few-layered graphene oxide (GO) and metal zinc as starting materials following combined processes, including in-situ metal zinc reduction and catalyzed GO deoxygenation. Metal zinc can directly reduce GO sheets in aqueous GO suspension at room temperature to obtain a porous composite precursor (ZnO/RGO) with ZnO nanoparticles anchored on the RGO sheets. Then another RGO protecting layer is directly coated on the ZnO/RGO precursor to obtain the hierarchical ZnO/RGO@RGO composite. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.041DOI Listing

Sandpaper as template for a robust superhydrophobic surface with self-cleaning and anti-snow/icing performances.

J Colloid Interface Sci 2019 Apr 15;548:224-232. Epub 2019 Apr 15.

Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China. Electronic address:

Superhydrophobic surfaces have important applications in various fields. However, the development of artificial superhydrophobic surfaces for large scale applications is hindered by their poor mechanical and chemical robustness. In this study, a simple, inexpensive, and scalable strategy was reported to create a versatile superhydrophobic surface that used sandpaper as a template to lock-in the fluorinated inorganic/organic film. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.040DOI Listing

The influence of lanthanide-(III)-nitrates on adsorbed monolayers of dodecylphosphorylcholine at the air-water interface.

J Colloid Interface Sci 2019 Apr 8;548:217-223. Epub 2019 Apr 8.

Institut für Physikalische und Theoretische Chemie, Universität Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany. Electronic address:

Adsorption layers at the air-water interface formed from the soluble zwitterionic surfactant dodecylphosphorylcholine (DPC) serving as a soluble model substance for phospho-lipids were characterized with respect to their equilibrium and dynamic surface properties. To clarify the effect of ionic interactions with electrolyte present in the bulk phase, surface rheological properties upon addition of Ce(NO) and Yb(NO) were determined. In order to account for the surface activity of the nitrate ion, comparative measurements using NaNO were carried out additionally. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.03.065DOI Listing

Robust, ultra-insulative and transparent polyethylene-based hybrid silica aerogel with a novel non-particulate structure.

J Colloid Interface Sci 2019 Apr 9;548:206-216. Epub 2019 Apr 9.

Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada. Electronic address:

Aerogels derived from pre-polymerized vinyl trimethoxy silane (VTMS) precursor with nano-size particles are known to exhibit outstanding mechanical and insulation properties. However, the density reduction has been limited by the poor connectivity. This paper presents an innovative technology to generate a new class of VTMS-based hybrid silica aerogels that possess outstanding non-particulate, reticulated structure and superior properties. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.028DOI Listing
April 2019
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Synthesis and optimization of the trimesic acid modified polymeric carbon nitride for enhanced photocatalytic reduction of CO.

J Colloid Interface Sci 2019 Apr 13;548:197-205. Epub 2019 Apr 13.

School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China. Electronic address:

The conjugated co-monomer, trimesic acid (TMA) was integrated into the triazine framework of polymeric carbon nitride (PCN), synthesized through chemical condensation of urea. The TMA-modified carbon nitride samples obtained were named as CNU-TMA and it was utilized for the photocatalytic reduction of carbon dioxide (CO) under visible light illumination. The induction of such electron donor-acceptor co-monomer (TMA) dominates the intramolecular structure of PCN by acting as a nucleophilic substitution substrate to facilitate the electron density in the π-electron conjugated system of PCN and thus elevate its photocatalytic activity. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.037DOI Listing

Carbohydrate-supramolecular gels: Adsorbents for chromium(VI) removal from wastewater.

J Colloid Interface Sci 2019 Apr 11;548:184-196. Epub 2019 Apr 11.

Università degli Studi di Palermo, Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy. Electronic address:

Hypothesis: To overcome the contamination of water by heavy metals the adsorption of the pollutant on gel phases is an attractive solution since gels are inexpensive, potentially highly efficient and form a distinct phase while allowing diffusion of the contaminated water throughout the material. This work tests the chromium(VI) adsorbent capacity of new supramolecular gels for Chromium(VI) removal from wastewater.

Experiments: First hydrophobic imidazolium salts of carbohydrate anions were synthesised as new gelators. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.034DOI Listing

Decreased cross-linking in interfacial polymerization and heteromorphic support between nanoparticles: Towards high-water and low-solute flux of hybrid forward osmosis membrane.

J Colloid Interface Sci 2019 Apr 4;548:170-183. Epub 2019 Apr 4.

State Key Laboratory of Separation Membranes and Membrane, School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China.

Realizing that one main factor affecting development of forward osmosis (FO) membrane was internal concentration polarization (ICP), graphene oxide (GO) with two-dimensional structure and oxidized carbon nanotubes (OCNTs) with one-dimensional structure were linked by oxygen-containing groups to form water channels in the polyamide layer. OCNTs and GO were used for producing reactions among oxygen-containing groups of nanoparticles and polymer chains, and oxygen-containing groups were fully exposed because GO and OCNTs restrained aggregation. Decrease of cross-linking degree for interfacial polymerization layer was confirmed due to reaction from GO/OCNTs/m-phenylene diamine/1,3,5-benzenetricarbonyl trichloride. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00219797193042
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http://dx.doi.org/10.1016/j.jcis.2019.04.014DOI Listing
April 2019
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Transitions between different motion regimes of the three-phase contact line during the pattern deposition of polymer from a volatile solution.

J Colloid Interface Sci 2019 Apr 1;548:145-150. Epub 2019 Apr 1.

Wolfson Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel. Electronic address:

Hypothesis: The interplay between different transport mechanisms during polymer deposition from a volatile solution determines the motion regime of the three-phase contact line, e.g. monotonous slip, stick-slip, and oscillatory wetting-dewetting regimes of motion, which define the morphology of the deposit. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00219797193040
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http://dx.doi.org/10.1016/j.jcis.2019.03.103DOI Listing
April 2019
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Activated carbon fiber for adsorption/electrodeposition of Cu (II) and the recovery of Cu (0) by controlling the applied voltage during membrane capacitive deionization.

J Colloid Interface Sci 2019 Apr 10;548:160-169. Epub 2019 Apr 10.

Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China.

Membrane capacitive deionization (MCDI) as a promising approach was developed to simultaneously conduct water desalination and metal recovery by using activated carbon fiber (ACF) as electrodes. The removal performance of two metal ions (Cu, Zn) was firstly investigated at different voltages. Experiments showed that the adsorption amount of Cu was higher than that of Zn under the voltage of 0. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.030DOI Listing

Facile electrodeposition of ternary Ni-Fe-Co alloy nanostructure as a binder free, cost-effective and durable electrocatalyst for high-performance overall water splitting.

J Colloid Interface Sci 2019 Mar 29;547:407-420. Epub 2019 Mar 29.

Department of Materials Engineering, Tarbiat Modares University, P.O. Box: 14115-143, Tehran, Iran.

Development of highly effective and stable electrocatalyst as full water electrolyzers is essential for the energy production process. In this study, binder-free and self-made Ni-Fe-Co nanostructure electrode was developed using electrodeposition method, and its electrocatalytic properties were investigated for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline media. The fabricated electrocatalyst exhibited excellent properties for the evolution of H and O. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.03.098DOI Listing

Visible light-triggered cargo release from donor acceptor Stenhouse adduct (DASA)-doped lyotropic liquid crystalline nanoparticles.

J Colloid Interface Sci 2019 Apr 11;548:151-159. Epub 2019 Apr 11.

Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville Campus, 381 Royal Parade, Parkville, VIC 3052, Australia. Electronic address:

Light-responsive nanocarriers are applicable as non-invasive, highly tunable and precisely controlled drug delivery systems. Here, we report a new nanocarrier system, achieved by doping D1, a type of green light-responsive donor acceptor Stenhouse adduct (DASA), into a lipid-based lyotropic liquid crystalline system. Time-resolved small angle X-ray scattering was used to confirm that the matrix underwent a rapid and fully reversible phase transition from lamellar to inverse cubic phase upon irradiation with green light (532 nm), reverting back on removal of light. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.032DOI Listing

Molybdenum disulfide-based hyaluronic acid-guided multifunctional theranostic nanoplatform for magnetic resonance imaging and synergetic chemo-photothermal therapy.

J Colloid Interface Sci 2019 Apr 8;548:131-144. Epub 2019 Apr 8.

Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of the State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou, Fujian 350116, China; Institute of Oceanography, Minjiang University, Fuzhou, Fujian 350108, China. Electronic address:

The construction of multifunctional theranostic nanoplatforms to integrate accurate imaging and enhanced therapy to treat tumors is highly attractive but remains a challenge. Here, we developed a molybdenum disulfide (MoS)-based hyaluronic acid (HA)-functionalized nanoplatform capable of achieving the targeted co-delivery of the gadolinium (Gd)-based contrast agents (CAs) and the anticancer drug gefitinib (Gef) for magnetic resonance imaging (MRI) and synergetic chemo-photothermal therapy of tumors. Gd ions were coupled to HA-grafted MoS nanosheets with diethylenetriaminepentaacetic acid (DTPA) as a linker, followed by the incorporation of Gef. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00219797193043
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http://dx.doi.org/10.1016/j.jcis.2019.04.022DOI Listing
April 2019
2 Reads

A molecular-dynamics study of sliding liquid nanodrops: Dynamic contact angles and the pearling transition.

J Colloid Interface Sci 2019 Mar 29;548:66-76. Epub 2019 Mar 29.

Laboratory of Surface and Interfacial Physics (LPSI), University of Mons, 7000 Mons, Belgium.

Hypothesis: That the behavior of sliding drops at the nanoscale mirrors that seen in macroscopic experiments, that the local microscopic contact angle is velocity dependent in a way that is consistent with the molecular-kinetic theory (MKT), and that observations at this scale shed light on the pearling transition seen with larger drops.

Methods: We use large-scale molecular dynamics (MD) to model a nanodrop of liquid sliding across a solid surface under the influence of an external force. The simulations enable us to extract the shape of the drop, details of flow within the drop and the local dynamic contact angle at all points around its periphery. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.03.094DOI Listing

Bioinspired superoleophobic/superhydrophilic functionalized cotton for efficient separation of immiscible oil-water mixtures and oil-water emulsions.

J Colloid Interface Sci 2019 Apr 11;548:123-130. Epub 2019 Apr 11.

Key Laboratory of Micro-Systems and Micro-Structures Manufacturing, Ministry of Education and School of Mechatronics Engineering, Harbin Institute of Technology, Xidazhi, 92, Harbin 150001, PR China.

Oil contamination is pressing environmental and natural resource issues. Oil-water separation technology can be used for water purification. Traditional methods are either time consuming or energy intensive. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.031DOI Listing

Characterisation of polyphosphate coated aluminium-doped titania nanoparticles during milling.

J Colloid Interface Sci 2019 Apr 4;548:110-122. Epub 2019 Apr 4.

School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom.

This paper investigates the characterisation of alumina-doped titania nanoparticles, milled under high-shear over time, in the presence of sodium hexametaphosphate (SHMP) dispersant. Transmission electron microscopy (TEM) indicated that prolonged milling times led to the formation of 10 nm particle fines which were electrostatically attracted to larger particles, where no change in the crystal structure was observed. Primary particle sizes measured by dynamic light scattering (DLS) and TEM were in agreement and showed no change in primary particle size (∼250 nm) with respect to milling time, however, there was a clear reduction in the magnitude of the slow mode decay associated to aggregates. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.009DOI Listing

Acid-salt treated CoAl layered double hydroxide nanosheets with enhanced adsorption capacity of methyl orange dye.

J Colloid Interface Sci 2019 Apr 1;548:100-109. Epub 2019 Apr 1.

State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China. Electronic address:

In this study, the ultra-thin CoAl layered double hydroxide (LDH) nanosheets with Cl intercalation were prepared by a hydrothermal method following acid-salt treatment. The morphology, structure and composition information of CoAl LDHs were identified by a variety of characterization methods including SEM, XRD, XPS, FT-IR, and BET. The effects of initial adsorbent concentration, pH, competitive anions, and temperature were also measured. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.03.107DOI Listing

Water-in-oil Pickering emulsions stabilized by an interfacial complex of water-insoluble polyphenol crystals and protein.

J Colloid Interface Sci 2019 Apr 4;548:88-99. Epub 2019 Apr 4.

Food Colloids and Bioprocessing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.

Long term stabilization of water-in-oil (W/O) emulsions remains a particularly challenging problem in colloid science. Recent studies have shown that polyphenols act as Pickering stabilizers at the water-oil interface. In this work we propose a novel way to stabilize water droplets via interfacial complex formation. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.010DOI Listing

Thermodynamic insights and molecular environments into catanionic surfactant systems: Influence of chain length and molar ratio.

J Colloid Interface Sci 2019 Apr 8;548:77-87. Epub 2019 Apr 8.

Enhanced Oil Recovery Research Institute, China University of Petroleum, Beijing 102249, China; China University of Geoscience, Beijing 100083, China. Electronic address:

Hypothesis: Imidazolium-based Ionic liquids as new generation cationic surfactants can provide designable alkyl chain length. In the catanionic surfactant systems, the alkyl chain lengths and molar ratios can greatly influence the interactions such as electrostatic and hydrophobic interaction. The variation in these interactions has a significant effect on the molecular environments of the self-assembly structure, and this process is always accompanied by the transition of aggregates and release or consumption of heat. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.023DOI Listing
April 2019
2 Reads

Graphene quantum dots decorated graphitic carbon nitride nanorods for photocatalytic removal of antibiotics.

J Colloid Interface Sci 2019 Apr 9;548:56-65. Epub 2019 Apr 9.

Department of Chemistry, Zhejiang Sci-Tech University, 928 Second Avenue, Xiasha Higher Education Zone, Hangzhou 310018, China. Electronic address:

The over-use of antibiotics has resulted in seriously environmental pollution. Metal-free photocatalysts have received tremendous attentions due to their environmental friendliness. Meanwhile, morphology and structure of photocatalysts have significant influence on their photocatalytic performance. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00219797193044
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http://dx.doi.org/10.1016/j.jcis.2019.04.027DOI Listing
April 2019
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Prussian blue analogues-derived bimetallic iron-cobalt selenides for efficient overall water splitting.

J Colloid Interface Sci 2019 Apr 9;548:48-55. Epub 2019 Apr 9.

Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China. Electronic address:

The efficient and durable catalysts toward electrochemical water-splitting plays significant role in clean and renewable energy storage applications. Herein, we design the Prussian blue analogues precursor by self-assembled strategy and converted it to (Fe-Co)Se composite by post-selenization method. Benefiting of unique porous morphology, high electrochemically active surface area and fast electron transfer ability, the excellent oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performance of (Fe-Co)Se catalyst were obtained. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.029DOI Listing
April 2019
1 Read

Fabrication of inverse-opal lysozyme-imprinted polydopamine/polypyrrole microspheres with near-infrared-light-controlled release property.

J Colloid Interface Sci 2019 Apr 8;548:37-47. Epub 2019 Apr 8.

CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, PR China. Electronic address:

The combination of the molecular imprinting technology and porous materials is a promising way to obtain high-efficient selective adsorption and separation materials for bioactive macromolecules. In this work, we developed a novel approach to prepare near-infrared (NIR)-light-response inverse-opal lysozyme (Lyz)-imprinted polydopamine/polypyrrole (IO-PDA/PPy-MIP) composite microspheres using micron-sized SiO colloidal crystal microspheres as the sacrificed template. The pore size of the IO-PDA/PPy-MIP microspheres can be tuned from 200 to 800 nm by the size of silica nanoparticles which self-assemble to form the template SiO colloidal crystal microspheres. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.021DOI Listing

On the canonical isotherms for bulk fluid, surface adsorption and adsorption in pores: A common thread.

J Colloid Interface Sci 2019 Apr 5;548:25-36. Epub 2019 Apr 5.

School of Chemical Engineering, University of Queensland, St. Lucia, Qld 4072, Australia.

Kinetic Monte Carlo simulated isotherms calculated in the canonical ensemble, at temperatures below the critical temperature, for bulk fluid, surface adsorption and adsorption in a confined space, show a van der Waals (vdW) loop with a vertical phase transition between the rarefied and dense spinodal points at the co-existence chemical potential, µ. Microscopic examination of the state points on this loop reveals features that are common to these systems. At state points with chemical potentials greater than μ the microscopic configurations show clusters, which coalesce to form two co-existing phases along the vertical section of the loop (the coexistence line). Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.018DOI Listing

MoS hollow spheres in ether-based electrolyte for high performance sodium ion battery.

J Colloid Interface Sci 2019 Apr 8;548:20-24. Epub 2019 Apr 8.

State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, Fujian 350002, China; Institute of Advanced Energy Materials, Fuzhou University, Fuzhou, Fujian 350002, China; Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou 213164, China. Electronic address:

In this work, instead of coupling with carbon-based materials, the obtained MoS hollow spheres constructed of many curved nanosheets have been successfully fabricated via one-pot hydrothermal process. Meanwhile, inheriting the advantages of hollow structure and combining the merits of ether-based electrolyte with the optimized voltage range, the obtained MoS electrode can demonstrate excellent electrochemical performance which deliver a large capacity, superior rate (391.4 mA h g at 0. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00219797193043
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http://dx.doi.org/10.1016/j.jcis.2019.04.025DOI Listing
April 2019
3 Reads

Facile construction of flower-like bismuth oxybromide/bismuth oxide formate p-n heterojunctions with significantly enhanced photocatalytic performance under visible light.

J Colloid Interface Sci 2019 Apr 8;548:12-19. Epub 2019 Apr 8.

State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.

Visible-light harvesting ability and charge separation efficiency are two pivotal factors for the design and construction of photocatalysts with an efficient ability for degrading toxic pollutants. Herein, visible-light-driven (VLD) BiOBr/BiOCOOH p-n heterojunction photocatalysts were prepared via an in-situ anion-exchange route. Through controlling the addition of KBr, we synthesized a series of BiOBr/BiOCOOH p-n heterojunctions with a different BiOBr loading. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.024DOI Listing
April 2019
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Kinetics of spontaneous microgels adsorption and stabilization of emulsions produced using microfluidics.

J Colloid Interface Sci 2019 Apr 6;548:1-11. Epub 2019 Apr 6.

Centre de Recherche Paul Pascal, UMR 5031, Université de Bordeaux, CNRS, 115 Avenue du Dr A. Schweitzer, 33600 Pessac, France. Electronic address:

The aim of the paper is to examine the adsorption kinetics of soft microgels and to understand the role of fundamental parameters such as electrostatics and deformability on the process. This knowledge is further exploited to produce microgel-stabilized emulsions using a co-flow microfluidic device. Uncharged microgels made of poly(N-isopropylacrylamide) are synthesized with variable cross-linker contents, and charged ones are produced by introducing pH sensitive co-monomers during the synthesis. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.020DOI Listing
April 2019
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The contact angle of nanofluids as thermophysical property.

J Colloid Interface Sci 2019 Apr 4;547:393-406. Epub 2019 Apr 4.

Institut für Luft- und Kältetechnik gGmbH Dresden, 01309 Dresden, Germany. Electronic address:

Droplet volume and temperature affect contact angle significantly. Phase change heat transfer processes of nanofluids - suspensions containing nanometre-sized particles - can only be modelled properly by understanding these effects. The approach proposed here considers the limiting contact angle of a droplet asymptotically approaching zero-volume as a thermophysical property to characterise nanofluids positioned on a certain substrate under a certain atmosphere. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00219797193042
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http://dx.doi.org/10.1016/j.jcis.2019.04.007DOI Listing
April 2019
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Effects of manganese incorporation on the morphology, structure and cytotoxicity of spherical bioactive glass nanoparticles.

J Colloid Interface Sci 2019 Apr 4;547:382-392. Epub 2019 Apr 4.

Department of Metallurgical Engineering and Materials, Federal University of Minas Gerais, School of Engineering, Belo Horizonte, MG, Brazil. Electronic address:

Bioactive glass nanoparticles (BGNPs) are of great interest in tissue engineering as they possess high dissolution rate and capability of being internalized by cells, releasing their dissolution products with therapeutic benefits intracellularly. A modified Stöber process can be applied to obtain different BGNPs compositions containing therapeutic ions while maintaining controllable particle morphology, monodispersity and reduce agglomeration. Here, BGNPs containing Mn, an ion that has been shown to influence the osteoblast proliferation and bone mineralization, were evaluated. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.016DOI Listing
April 2019
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The carbonation kinetics of calcium hydroxide nanoparticles: A Boundary Nucleation and Growth description.

J Colloid Interface Sci 2019 Mar 27;547:370-381. Epub 2019 Mar 27.

Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy. Electronic address:

Hypothesis: The reaction of Ca(OH) with CO to form CaCO (carbonation process) is of high interest for construction materials, environmental applications and art preservation. Here, the "Boundary Nucleation and Growth" model (BNGM) was adopted for the first time to consider the effect of the surface area of Ca(OH) nanoparticles on the carbonation kinetics.

Experiments: The carbonation of commercial and laboratory-prepared particles' dispersions was monitored by Fourier Transform Infrared Spectroscopy, and the BNGM was used to analyze the data. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.03.089DOI Listing

Why does vacuum drive to the loading of halloysite nanotubes? The key role of water confinement.

J Colloid Interface Sci 2019 Apr 4;547:361-369. Epub 2019 Apr 4.

Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Viale delle Scienze, pad. 17, 90128 Palermo, Italy; Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali, INSTM, Via G. Giusti, 9, I-50121 Firenze, Italy.

The filling of halloysite nanotubes with active compounds solubilized in aqueous solvent was investigated theoretically and experimentally. Based on Knudsen thermogravimetric data, we demonstrated the water confinement within the cavity of halloysite. This process is crucial to properly describe the driving mechanism of halloysite loading. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00219797193042
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http://dx.doi.org/10.1016/j.jcis.2019.04.012DOI Listing
April 2019
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Ionisable emerging pharmaceutical adsorption onto microwave functionalised biochar derived from novel lignocellulosic waste biomass.

J Colloid Interface Sci 2019 Apr 4;547:350-360. Epub 2019 Apr 4.

University of Novi Sad, Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, Trg Dositeja Obradovica 6, Novi Sad, Serbia. Electronic address:

Functionalised biochar (WpOH) was prepared from wild plum kernels using simultaneous pyrolysis and microwave potassium hydroxide (KOH) functionalisation. This was then applied to the removal (from water) of an ionisable pharmaceutical - naproxen (NPX). Characterization of the WpOH was carried out using pH, SEM/EDX, BET, FTIR, XRD, and the principle adsorption mechanisms were thoroughly studied. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.011DOI Listing

A nanoneedle-based reactional wettability variation sensor array for on-site detection of metal ions with a smartphone.

J Colloid Interface Sci 2019 Apr 4;547:330-338. Epub 2019 Apr 4.

Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials Research, College of Physical Science and Technology, Xiamen University, 9 Zengcuoan West Road, 361005 Xiamen, China. Electronic address:

An enhancement of the reactional wettability variation (RWV) sensing strategy is achieved based on the wettability switch of a nanoneedle surface. The sensor unit is formed by coating hydrophobic azoimidazole compounds, as the responder compounds onto the originally hydrophilic surface of cobalt hydroxide nanoneedles. The complexation reaction between metal ions and azoimidazole ligands etches the hydrophobic coating and switches the surface wettability, making the surface hydrophilic again. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.015DOI Listing
April 2019
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3.368 Impact Factor

Fabrication of molybdenum and tungsten oxide, sulfide, phosphide (MoWO/MoWS/MoWP) porous hollow nano-octahedrons from metal-organic frameworks templates as efficient hydrogen evolution reaction electrocatalysts.

J Colloid Interface Sci 2019 Apr 4;547:339-349. Epub 2019 Apr 4.

School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China. Electronic address:

A metal-organic frameworks-derived sulfuration and phosphorization method is developed for constructing a hydrogen evolution reaction (HER) electrocatalyst (MoWOSP@C), which is composed of MoWO nanoparticles, MoWS nanosheets, and MoWP nanoparticles coated with a porous hollow carbon matrix. The three-dimensional MoWOSP@C nano-octahedron shows excellent catalytic activity with a low overpotential of -118 mV at a current density of -10 mA cm and a small Tafel slope of 74.1 mV dec, which are all higher than those of the single phase components. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.013DOI Listing

Preparation of photochromic liquid core nanocapsules based on theoretical design.

J Colloid Interface Sci 2019 Apr 4;547:318-329. Epub 2019 Apr 4.

NOF Corporation, 82, Nishimon, Taketoyo-cho, Chita-gun, Aichi 470-2345, Japan.

Photochromic materials have attracted considerable attention for their practical applications in optoelectronic devices. In this study, we developed the photochromic liquid core nanocapsules by polymerization of oil-in-water (O/W) nanoemulsion monomer droplets on the basis of Hansen solubility parameters. The thermoresponsive amphiphilic block copolymers (POEGMA-b-PSt and POEGMA-b-PMMA) were synthesized by sequential reversible addition fragmentation chain transfer (RAFT) polymerization of hydrophilic oligo(ethylene glycol) methyl ether methacrylate and hydrophobic styrene or MMA. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.008DOI Listing

Corrosion resistance and drug release profile of gentamicin-loaded polyelectrolyte multilayers on magnesium alloys: Effects of heat treatment.

J Colloid Interface Sci 2019 Apr 5;547:309-317. Epub 2019 Apr 5.

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China.

Magnesium (Mg) alloys have received considerable attentions as the emerging biodegradable implant materials in orthopedic surgery applications. However, the rapid corrosion rate and the susceptibility to bacterial infection have prevented their wide spread applications to date. In this work, the gentamicin-loaded multilayers have been constructed on Mg alloys through spin-assisted layer-by-layer (SLbL) assembly. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.017DOI Listing
April 2019
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Casting amorphorized SnO/MoO hybrid into foam-like carbon nanoflakes towards high-performance pseudocapacitive lithium storage.

J Colloid Interface Sci 2019 Apr 2;547:299-308. Epub 2019 Apr 2.

Ability R&D Energy Research Centre (AERC), School of Energy and Environment, City University of Hong Kong, Hong Kong Special Administrative Region. Electronic address:

We report an amorphorization-hybridization strategy to enhance lithium storage by casting atomically mixed amorphorized SnO/MoO into porous foam-like carbon nanoflakes (denote as SnO/MoO@CNFs, or SMC in short), which are simply prepared by annealing tin(II)/molybdenum(IV) 2-ethylhexanoate within CNFs under ambient atmosphere at a low temperature (300 °C). The SnO/MoO loading amount within CNFs can be easily adjusted by controlling the Sn/Mo/C precursors. When examined as lithium ion battery (LIB) anode materials, the amorphorized SnO/MoO@CNFs with carbon content of 32 wt% (also denote as SMC-32, in which the number represents the carbon content) deliver a high reversible capacity of 1120. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.03.108DOI Listing
April 2019
3.368 Impact Factor

P doped MoS nanoplates embedded in nitrogen doped carbon nanofibers as an efficient catalyst for hydrogen evolution reaction.

J Colloid Interface Sci 2019 Apr 3;547:291-298. Epub 2019 Apr 3.

Center for Clean Energy Technology, School of Mathematical and Physical Science, Faculty of Science, University of Technology Sydney, NSW 2007, Australia. Electronic address:

Two-dimensional (2D) molybdenum sulfide (MoS) is considered as a promising catalyst for hydrogen evolution reaction (HER), originated from its abundant hydrogen evolution active sites. However, the HER performance of MoS is currently hindered by the limited exposed density of the active sites and low conductivity. Herein, we report a facile and scalable electrospinning technique to fabricate 2D MoS nanoplates doped with phosphorus within one-dimensional nitrogen doped-carbon nanofibers (NCNFs-MoS|P) as a highly efficient HER catalyst. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.004DOI Listing
April 2019
2 Reads

Worm-like micelles and vesicles formed by alkyl-oligo(ethylene glycol)-glycoside carbohydrate surfactants: The effect of precisely tuned amphiphilicity on aggregate packing.

J Colloid Interface Sci 2019 Mar 28;547:275-290. Epub 2019 Mar 28.

School of Chemistry, Monash University, Clayton, VIC 3800, Australia. Electronic address:

Carbohydrates are appealing non-ionic surfactant head-groups as they are naturally abundant, generally biocompatible and biodegradable, and readily functionalized. Recent work has produced a promising molecular candidate for the formation of viscoelastic worm-like micellar solutions: a tri(ethylene glycol)-linked oleyl-β-D-glucoside surfactant (GlcC18:1) exhibited near ideal Maxwell behavior at low concentrations (2.9 wt%) without additives at room temperature. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.03.068DOI Listing

Nanodiamonds and surfactants in water: Hydrophilic and hydrophobic interactions.

J Colloid Interface Sci 2019 Mar 30;547:206-216. Epub 2019 Mar 30.

Physical Department, M.V. Lomonosov Moscow State University, 1 bldg. 2 Leninskie Gory, 119991 Moscow, Russia; National Research Nuclear University MEPhI, 31 Kashirskoe shosse, 115409 Moscow, Russia.

Hypothesis: Nanodiamonds, one of the most promising nanomaterials for the use in biomedicine, placed in the organisms are bound to interact with various amphiphilic lipids and their micelles. However, while the influence of surfactants, the close relative of lipids, on the properties of colloidal nanodiamonds is well studied, the influence of nanodiamonds on the properties of surfactants, lipids, and, therefore, on the structure of surrounding tissues, is poorly understood.

Experiment: In this work, the influence of interactions of hydrophobic and hydrophilic nanodiamonds with ionic surfactant sodium octanoate in water on hydrogen bonds, the properties of the surfactant and micelle formation were studied using Raman spectroscopy and dynamic light scattering technique. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.03.102DOI Listing

Zn-Ag-In-S quantum dot sensitized solar cells with enhanced efficiency by tuning defects.

J Colloid Interface Sci 2019 Apr 4;547:267-274. Epub 2019 Apr 4.

Department of Chemistry, Shanghai Normal University, Shanghai 200234, China. Electronic address:

Being an important I-III-VI green quantum dot (QD), AgInS (AIS) has been used as sensitizers for QD sensitized solar cells (QDSCs) but with low power conversion efficiency (PCE). Herein, we have used oleylamine as surfactant to synthesize AIS and quaternary Zn-Ag-In-S (ZAIS) QDs via a facile and green method. The assembled AIS QDSCs show high PCE of 2. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.006DOI Listing
April 2019
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Switchable length nanotubes from a self-assembling pH and thermosensitive linear l,d-peptide-polymer conjugate.

J Colloid Interface Sci 2019 Mar 29;547:256-266. Epub 2019 Mar 29.

Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro, 5, I-00185 Rome, Italy. Electronic address:

Preparation and characterization of a pH and thermosensitive linear l,d-octapeptide-poly(dimethylamino ethyl methacrylate) ((l-Val-d-Val)-PDMAEMA) conjugate is reported. The hydrophobic uncharged linear (l-Val-d-Val) octapeptide was designed to self-assemble in nanotubes by exploiting the tubular self-assembling properties of linear peptides with regularly alternating enantiomeric sequences. pH and thermosensitive PDMAEMA was obtained by atom transfer radical polymerization (ATRP). Read More

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http://dx.doi.org/10.1016/j.jcis.2019.03.093DOI Listing

Analytical modeling of micelle growth. 1. Chain-conformation free energy of binary mixed spherical, wormlike and lamellar micelles.

J Colloid Interface Sci 2019 Apr 1;547:245-255. Epub 2019 Apr 1.

Unilever Research & Development Port Sunlight, Bebington CH63 3JW, UK.

Hypotheses: A quantitative molecular-thermodynamic theory of the growth of giant wormlike micelles of nonionic surfactants can be developed on the basis of a generalized model, which includes the classical "phase separation" and "mass action" models as special cases. The generalized model describes spherocylindrical micelles, which are simultaneously multicomponent and polydisperse in size.

Theory: By analytical minimization of the free-energy functional we derived explicit expressions for the chain-extension and chain-end distribution functions in the hydrocarbon core of mixed micelles from two surfactants of different chainlengths. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.03.105DOI Listing
April 2019
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Correlation of micellar aggregation - complexation regimes to discern stability of micellar structure and nano-encapsulation.

J Colloid Interface Sci 2019 Apr 2;547:234-244. Epub 2019 Apr 2.

Department of Nanoscience and Technology, Sri Ramakrishna Engineering College, Coimbatore, Tamil Nadu, India. Electronic address:

Hypothesis: The physico-chemical mechanisms associated reverse micelle based encapsulation processes deserve investigation owing to the direct correlation between stability of micellar structure and nano encapsulation. The presence of core nanoparticles is expected to influence the stability of micellar structure when the concentrations of surfactant and particle concentration are varied. Hence, it should be possible to define the micellar aggregation - complexation regimes and systematic measurements have robust implications for nano encapsulation. Read More

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http://dx.doi.org/10.1016/j.jcis.2019.04.003DOI Listing
April 2019
1 Read