Publications by authors named "Hongnan Zhang"

19 Publications

  • Page 1 of 1

NLRP3 induces the autocrine secretion of IL-1β to promote epithelial-mesenchymal transition and metastasis in breast cancer.

Biochem Biophys Res Commun 2021 Jun 8;560:72-79. Epub 2021 May 8.

Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China. Electronic address:

Tumor metastasis is a leading cause of mortality in patients with breast cancer (BC). As a predominant component of inflammasome, Nod-like receptor protein 3 (NLRP3) was found to be required for tumor progression, while the role of NLRP3 in BC metastasis remains largely undefined. In current study, we found that invasive BC had aberrant upregulation of NLRP3 expression, especially in the claudin-low subtype. And higher expression of NLRP3 predicted poor survival of BC patients. Further investigation suggested that NLRP3 promotes the migration and invasion, as well as the metastasis of BC cells. Moreover, we revealed that NLRP3 induces the autocrine secretion of IL-1β to promote epithelial-mesenchymal transition via a Caspase-1-dependent manner. Hence, this study suggested that upregulation of NLRP3 in BC induces the autocrine secretion of IL-1β and promotes EMT and metastasis of BC cells.
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http://dx.doi.org/10.1016/j.bbrc.2021.04.122DOI Listing
June 2021

Pharmaceutical care program for ischemic stroke patients: a randomized controlled trial.

Int J Clin Pharm 2021 Apr 28. Epub 2021 Apr 28.

College of Pharmacy and Health Sciences, Western New England University, Springfield, MA, 01119, USA.

Background Effective secondary prevention is essential for reducing stroke recurrence. Objective This parallel randomized-controlled study aimed to evaluate the impact of a pharmaceutical care program on risk factor control (blood pressure, blood glucose, lipid profile, and medication adherence) and hospital readmissions in post-stroke care. Setting The First Hospital of Hebei Medical University, China. Method Ischemic stroke patients were enrolled in the study. Upon hospital discharge, patients were randomly allocated either to a control group (CG, no pharmaceutical care) or to an intervention group (IG, monthly pharmaceutical care follow-up for 6 months). The interventions aimed to increase medication adherence and improve risk factor control through education and counseling. Medication adherence and surrogate laboratory markers of risk factors were assessed and compared between the two groups. Main outcome measures Blood pressure, blood glucose, lipid profile, and medication adherence. Results A total of 184 patients with ischemic strokes were randomly assigned, and 84 patients in IG and 82 in CG were analyzed. There were no significant differences (P > 0.05) in both groups concerning demographic and clinical characteristics. Compared to CG, at the 6-month follow-up, medication adherence rates significantly increased regarding antihypertensive drugs (92.86% versus 78.57%, P = 0.031), anti-diabetic drugs (91.67% versus 69.7%, P = 0.02), and lipid-lowering drugs (77.38% versus 60.98%, P = 0.022) in IG. Compared to CG, more patients in IG attained the goal surrogate risk factor control markers of hemoglobin A1c (87.88% vs. 52.78%, P = 0.038) and low-density lipoprotein-C (66.67% vs. 48.78%, P = 0.02). Significantly fewer patients were re-admitted to the hospital in IG than CG (7.14% vs. 18.3%, P = 0.03). Conclusion Pharmaceutical care programs can improve risk factor control for the secondary prevention of stroke recurrence in ischemic stroke patients.
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http://dx.doi.org/10.1007/s11096-021-01272-9DOI Listing
April 2021

Effects of ecologically relevant concentrations of cadmium on locomotor activity and microbiota in zebrafish.

Chemosphere 2020 Oct 27;257:127220. Epub 2020 May 27.

Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China. Electronic address:

Cadmium (Cd) is widely spread in the aquatic environment, and its impact on humans and the ecosystem is an important issue in public health. However, its effects on zebrafish microbiota are still poorly understood. In this study, the potential developmental neurotoxicity and microbiota dysbiosis of ecologically relevant concentrations of Cd (0, 1.25, 2.5 and 5 μg/L) was evaluated by waterborne exposure for 7 days. The data showed that exposure to 5 μg/L of Cd significantly decreased survival rates and impaired locomotor activities. Uptake of Cd was enhanced with the increase of the concentration and duration of exposure. High-throughput sequencing analysis revealed a significant change in the richness and diversity of the microbiota of Cd-treated zebrafish. At the phylum level, the abundance of Proteobacteria increased, while that Firmicutes was significantly decreased after exposure to 5 μg/L Cd. At the genus level, there were significant changes in the abundances of several bacteria involved in the regulation of neurodegenerative diseases (Pseudomonas, Ruminococcaceae, Blautia, Bacteroides, Lactobacillus, Lachnospiraceae, and Phascolarctobacterium) in the Cd-treatment groups, as compared to the control group. In addition, the mRNA expression profiles of bdnf and genes involved in serotonin signaling and metabolism were changed in the Cd exposure groups. Together, these data suggest that Cd could be harmful to zebrafish health by inducing the microbiota changes, and the microbiota could serve as a potential target to protect against the adverse effects of Cd toxicity.
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http://dx.doi.org/10.1016/j.chemosphere.2020.127220DOI Listing
October 2020

Polyacrylonitrile/polyimide composite sub-micro fibrous membranes for precise filtration of PM pollutants.

J Colloid Interface Sci 2020 Oct 24;578:195-206. Epub 2020 May 24.

Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China.

Particulate matter (PM) pollution has enormously threatened ecosystem and public health. Among various air filtration medium, fibrous ones are very attracting and promising, with an array of advantages such as high specific surface area, and good internal connectivity. Even so, the large-scale fabrication of fibrous filtration materials still remains challenging. Here, three-dimensional polyacrylonitrile/polyimide (PAN/PI) composite sub-micro fibrous membranes were fabricated facilely via free surface electrospinning for precise filtration of PM pollutants, where the waste PI short fibers were utilized as raw material. The resultant composite fibrous membranes, featuring thin fiber diameter (~150 nm), low areal density (<0.8 g m), large porosity, and highly tortuous airflow channels with uniform poresize distribution, possessed excellent mechanical property with tensile strength of 4.95 MPa (twice that of pristine PAN), high thermal durability as well as remarkable filtration performance for ultrafine NaCl aerosol particles (≤0.26 µm) even after multiple filtration tests at high airflow velocity of 14.1 cm s. The deepened aperture channels inside three-dimensional sub-micro fibrous membranes are tortuous enough for capturing ultrafine PMs from the airstream mainly via diffusion, interception, and impaction mechanisms, and the reported large-scale fabrication of cost-effective homogeneous PAN/PI fibrous filter media is promising for industrial production and commercial applications.
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http://dx.doi.org/10.1016/j.jcis.2020.05.081DOI Listing
October 2020

Electrospun nanofibers of polyelectrolyte-surfactant complexes for antibacterial wound dressing application.

Soft Matter 2019 Dec;15(48):10020-10028

Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China.

The development of polyelectrolyte-surfactant complexes (PESCs) has attracted extensive research interest in different fields of applications. However, the liquid state of PESCs has limited their utility in applications where solid materials are required. In this study, novel antibacterial fibers were fabricated via electrospinning PESCs in the solid state without any additives. The PESCs were prepared in aqueous mixtures of pre-hydrolyzed polyacrylonitrile (HPAN), a polyelectrolyte, and cetyltrimethyl ammonium chloride (CTAC), an antibacterial cationic surfactant, by taking advantage of the self-aggregation behavior of the polyelectrolyte and surfactant, which increased the antibacterial agent loading ability and, thus, the antibacterial activity of polymers. By release-killing and contact-killing mechanisms, the as-spun PESC nanofibrous membranes exhibited strong antibacterial ability against both Gram-positive and Gram-negative bacteria, killing 5 log CFU of E. coli and S. aureus within a contact time as short as 30 min. Furthermore, PESCs were blended with polycaprolactone (PCL) to prepare composite nanofibrous membranes as a novel wound dressing, which showed excellent antibacterial activity and favorable cytocompatibility, with the mechanical strength high enough to satisfy the clinical application requirements. The PESC fibers with durable antibacterial activity presented in the current work would be promising for medical applications.
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http://dx.doi.org/10.1039/c9sm02043hDOI Listing
December 2019

Wettability Control in Tree Structure-Based 1D Fiber Assemblies for Moisture Wicking Functionality.

ACS Appl Mater Interfaces 2019 Nov 22;11(47):44682-44690. Epub 2019 Oct 22.

One of the fundamental properties of natural systems is their water transport ability, and living systems have efficient moisture management features. Here, a unique structure, inspired by the water transfer behavior in trees, was designed for one-dimensional (1D) fiber assemblies. In this 1D fiber assembly structure, a differential capillary effect enabling rapid water transfer at the interface between traditional cotton fibers and electrospun nanofibers was explored. A tree-like structure yarn was constructed successfully by novel electrospinning technology, and the effect was quantitatively controlled by precisely regulating the fibers' wettability. Fabrics based on these tree-like core-spun yarns possessed advanced moisture-wicking performance, a high one-way transport index () of 1034.5%, and a desirable overall moisture management capability of 0.88, which are over two times higher than those of conventional fabrics. This moisture-wicking regime endowed these 1D fiber assemblies with unique water transfer channels, providing a new strategy for moisture-heat transmission, microfluidics, and biosensor applications.
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http://dx.doi.org/10.1021/acsami.9b14370DOI Listing
November 2019

Photocatalytic Activity of TiO₂ Nanofibers: The Surface Crystalline Phase Matters.

Nanomaterials (Basel) 2019 Apr 3;9(4). Epub 2019 Apr 3.

Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China.

The crystal phases and surface states of TiO₂ can intrinsically determine its performance in the applications of photocatalysis. Here, we prepared TiO₂ nanofibers with different crystal phase contents by electrospinning followed via calcination at different temperatures. The TiO₂ nanofibers were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectrometry, transmission electron microscopy (TEM), and photocatalytic performance testing. The results showed that the phases of TiO₂ nanofibers were layered, that surface crystal phase transition rate was faster than that of internal layers contributed the difference in the ratio of anatase and rutile in the outer and inner layer of TiO₂ nanofibers. The TiO₂ nanofibers obtained at 575 °C had the best photocatalytic activity, taking only 25 min to degrade Rhodamine B. At 575 °C, the rutile content of the sample surface was about 80 wt.%, while the internal rutile content was only about 40 wt.%. Subsequently, we prepared two different structures of anatase-rutile core-shell TiO₂ nanofibers. The core-shell structure can be clearly seen by TEM characterization. The photocatalytic activity of two kinds of core-shell TiO₂ nanofibers was tested. The results showed that the photocatalytic activity was close to that of the pure phase TiO₂ nanofibers, which corresponded with the surface phase. This further proves that the photocatalytic activity of the material is mainly affected by its surface structure.
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http://dx.doi.org/10.3390/nano9040535DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6523154PMC
April 2019

Differential response to lead toxicity in rat primary microglia and astrocytes.

Toxicol Appl Pharmacol 2019 01 23;363:64-71. Epub 2018 Nov 23.

Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong, China. Electronic address:

Lead (Pb) is one of the most widely studied occupational and environmental toxins. Chronic exposure to Pb affects neural function in the central nervous system (CNS). Glial cells in the CNS, such as microglia and astrocytes, respond differently to Pb-induced toxicity. However, the underlying mechanism has not yet been identified. We measured the cell viability and intracellular Pb uptake in rat primary microglia and astrocytes using the CCK-8 assay and inductively coupled plasma mass spectrometry, and found that Pb decreased microglial viability at lower dosages than in astrocytes, while Pb uptake was greater in astrocytes. Pb-induced oxidative stress in microglia results in increased production of reactive oxygen species, down-regulation of glutathione, and enhanced Nrf2 protein expression, while there was no obvious change in astrocytes. The role of Nrf2 in Pb-induced oxidative stress has also been confirmed in primary microglia with the use of Nrf2 small interfering RNA and an Nrf2 agonist. These data indicate that primary microglia were more sensitive to Pb exposure than astrocytes, which is associated with an obvious oxidative stress response and up-regulation of Nrf2 might be involved in this process.
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http://dx.doi.org/10.1016/j.taap.2018.11.010DOI Listing
January 2019

A Fast Response Ammonia Sensor Based on Coaxial PPy-PAN Nanofiber Yarn.

Nanomaterials (Basel) 2016 Jun 23;6(7). Epub 2016 Jun 23.

Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, No. 2999 North Renmin Road, Songjiang District, Shanghai 201620, China.

Highly orientated polypyrrole (PPy)-coated polyacrylonitrile (PAN) (PPy-PAN) nanofiber yarn was prepared with an electrospinning technique and chemical polymerization. The morphology and chemical structure of PPy-PAN nanofiber yarn was characterized by scanning electron microscopy (SEM), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and fourier transform infrared spectroscopy (FTIR), which indicated that the PPy as the shell layer was homogeneously and uniformly polymerized on the surface of PAN nanofiber. The effects of different concentration of doping acid on the responses of PPy-PAN nanofiber yarn sensor were investigated. The electrical responses of the gas sensor based on the PPy-PAN nanofiber yarn to ammonia were investigated at room temperature. The nanoyarn sensor composed of uniaxially aligned PPy-PAN nanofibers with a one-dimensional structure exhibited a transient response, and the response time was less than 1 s. The excellent sensing properties mentioned above give rise to good potential application prospects in the field of ammonia sensor.
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http://dx.doi.org/10.3390/nano6070121DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5224600PMC
June 2016

Carbon-layer-protected cuprous oxide nanowire arrays for efficient water reduction.

ACS Nano 2013 Feb 4;7(2):1709-17. Epub 2013 Feb 4.

Water Desalination and Reuse Center, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.

In this work, we propose a solution-based carbon precursor coating and subsequent carbonization strategy to form a thin protective carbon layer on unstable semiconductor nanostructures as a solution to the commonly occurring photocorrosion problem of many semiconductors. A proof-of-concept is provided by using glucose as the carbon precursor to form a protective carbon coating onto cuprous oxide (Cu₂O) nanowire arrays which were synthesized from copper mesh. The carbon-layer-protected Cu₂O nanowire arrays exhibited remarkably improved photostability as well as considerably enhanced photocurrent density. The Cu₂O nanowire arrays coated with a carbon layer of 20 nm thickness were found to give an optimal water splitting performance, producing a photocurrent density of -3.95 mA cm⁻² and an optimal photocathode efficiency of 0.56% under illumination of AM 1.5G (100 mW cm⁻²). This is the highest value ever reported for a Cu₂O-based electrode coated with a metal/co-catalyst-free protective layer. The photostability, measured as the percentage of the photocurrent density at the end of 20 min measurement period relative to that at the beginning of the measurement, improved from 12.6% on the bare, nonprotected Cu₂O nanowire arrays to 80.7% on the continuous carbon coating protected ones, more than a 6-fold increase. We believe that the facile strategy presented in this work is a general approach that can address the stability issue of many nonstable photoelectrodes and thus has the potential to make a meaningful contribution in the general field of energy conversion.
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http://dx.doi.org/10.1021/nn3057092DOI Listing
February 2013

Plasmonic gold nanocrystals coupled with photonic crystal seamlessly on TiO2 nanotube photoelectrodes for efficient visible light photoelectrochemical water splitting.

Nano Lett 2013 Jan 5;13(1):14-20. Epub 2012 Dec 5.

Water Desalination and Reuse Center, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.

A visible light responsive plasmonic photocatalytic composite material is designed by rationally selecting Au nanocrystals and assembling them with the TiO(2)-based photonic crystal substrate. The selection of the Au nanocrystals is so that their surface plasmonic resonance (SPR) wavelength matches the photonic band gap of the photonic crystal and thus that the SPR of the Au receives remarkable assistance from the photonic crystal substrate. The design of the composite material is expected to significantly increase the Au SPR intensity and consequently boost the hot electron injection from the Au nanocrystals into the conduction band of TiO(2), leading to a considerably enhanced water splitting performance of the material under visible light. A proof-of-concept example is provided by assembling 20 nm Au nanocrystals, with a SPR peak at 556 nm, onto the photonic crystal which is seamlessly connected on TiO(2) nanotube array. Under visible light illumination (>420 nm), the designed material produced a photocurrent density of ~150 μA cm(-2), which is the highest value ever reported in any plasmonic Au/TiO(2) system under visible light irradiation due to the photonic crystal-assisted SPR. This work contributes to the rational design of the visible light responsive plasmonic photocatalytic composite material based on wide band gap metal oxides for photoelectrochemical applications.
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http://dx.doi.org/10.1021/nl3029202DOI Listing
January 2013

Three-dimensional assemblies of graphene prepared by a novel chemical reduction-induced self-assembly method.

Nanoscale 2012 Nov;4(22):7038-45

Chemical and Life Sciences & Engineering Division, Water Desalination and Reuse Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.

In this study, three-dimensional (3D) graphene assemblies are prepared from graphene oxide (GO) by a facile in situ reduction-assembly method, using a novel, low-cost, and environment-friendly reducing medium which is a combination of oxalic acid (OA) and sodium iodide (NaI). It is demonstrated that the combination of a reducing acid, OA, and NaI is indispensable for effective reduction of GO in the current study and this unique combination (1) allows for tunable control over the volume of the thus-prepared graphene assemblies and (2) enables 3D graphene assemblies to be prepared from the GO suspension with a wide range of concentrations (0.1 to 4.5 mg mL(-1)). To the best of our knowledge, the GO concentration of 0.1 mg mL(-1) is the lowest GO concentration ever reported for preparation of 3D graphene assemblies. The thus-prepared 3D graphene assemblies exhibit low density, highly porous structures, and electrically conducting properties. As a proof of concept, we show that by infiltrating a responsive polymer of polydimethylsiloxane (PDMS) into the as-resulted 3D conducting network of graphene, a conducting composite is obtained, which can be used as a sensing device for differentiating organic solvents with different polarity.
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http://dx.doi.org/10.1039/c2nr32157bDOI Listing
November 2012

Adsorption of Cu(II) from aqueous solution by anatase mesoporous TiO2 nanofibers prepared via electrospinning.

J Colloid Interface Sci 2012 Feb 9;367(1):429-35. Epub 2011 Nov 9.

Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China.

Anatase mesoporous titanium nanofibers (m-TiO(2) NFs) have been synthesized from calcination of the as-spun TiO(2)/polyvinyl pyrrolidone (PVP)/pluronic123 (P123) composite nanofibers at 450 °C in air for 3h. The structures and the physicochemical properties of m-TiO(2) NFs are characterized by scanning electron microscopy, X-ray diffraction, nitrogen adsorption-desorption isotherm analysis, and determination point of zero charge, respectively. An investigation of Cu(II) adsorption onto m-TiO(2) NFs has been studied in this research. The pH effect, adsorption kinetics, and adsorption isotherms are examined in batch experiments. Experimental data were analyzed using pseudo-first order and pseudo-second order kinetic models. It was found that adsorption kinetics were the best fitting by a pseudo-second order kinetic model. The optimum pH for Cu(II) adsorption was found to be 6.0. The equilibrium data were analyzed by the Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherm models, which revealed that the Freundlich isotherm is the best-fit isotherm for the adsorption of Cu(II). Compared to the TiO(2) NFs (regular anatase titanium nanofibers) in the same experimental conditions to elucidate the role of the mesoporous structure of m-TiO(2) NFs, experimental results showed that the m-TiO(2) NFs had a better adsorption capacity for Cu(II) due to its higher surface area.
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http://dx.doi.org/10.1016/j.jcis.2011.09.088DOI Listing
February 2012

One-dimensional polyelectrolyte/polymeric semiconductor core/shell structure: sulfonated poly(arylene ether ketone)/polyaniline nanofibers for organic field-effect transistors.

Adv Mater 2011 Nov 10;23(43):5109-12. Epub 2011 Oct 10.

Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun 130012, China.

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http://dx.doi.org/10.1002/adma.201102125DOI Listing
November 2011

Au-doped polyacrylonitrile-polyaniline core-shell electrospun nanofibers having high field-effect mobilities.

Small 2011 Mar 31;7(5):597-600. Epub 2011 Jan 31.

Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun, 130012, China.

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http://dx.doi.org/10.1002/smll.201001716DOI Listing
March 2011

Facile preparation of ultrafine polyimide nanofibers containing silver nanoparticles.

J Nanosci Nanotechnol 2009 Nov;9(11):6688-92

Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun, 130012, PR China.

A simple method for the preparation of ultrafine polyimide (PI) fibers containing Ag nanoparticles was developed. Ag+ ions in a poly(amic acid) (PAA) precursor solution were firstly electrospun into ultrafine PAA fibers, and the Ag+ ions were then directly reduced to Ag nanoparticles during the imidization process of PAA. The PAA was used as a matrix as well as a reducing agent for the Ag+ ions. The obtained Ag nanoparticles were evenly distributed in the PI nanofiber mats and their average size was ca. 20 nm. This method was very simple and could be generally used to prepare the polyimide fibers containing Ag nanoparticles.
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http://dx.doi.org/10.1166/jnn.2009.1346DOI Listing
November 2009

Assembly of Pt nanoparticles on electrospun In2O3 nanofibers for H2S detection.

J Colloid Interface Sci 2009 Oct 21;338(2):366-70. Epub 2009 Jun 21.

Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China.

In this paper, we presented a simple and effective solution route to deposit Pt nanoparticles on electrospun In2O3 nanofibers for H2S gas detection. The morphology and chemical structure of the as-prepared samples were analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectra (XPS). The results showed that large quantities of In2O3 nanofibers with diameters about from 60 to 100 nm were obtained and the surface of them was decorated with Pt nanoparticles (5-10 nm in size). The In2O3 nanofibers decorated by Pt nanoparticles exhibited excellent gas sensing properties to H2S, such as high sensitivity, good selectivity and fast response at relatively low temperature.
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http://dx.doi.org/10.1016/j.jcis.2009.06.041DOI Listing
October 2009

Mg2+/Na+-doped rutile TiO2 nanofiber mats for high-speed and anti-fogged humidity sensors.

Talanta 2009 Aug 27;79(3):953-8. Epub 2009 May 27.

The Alan G. MacDiarmid Institute, Jilin University, Changchun, 130012, PR China.

Mg(2+) and Na(+) doped rutile TiO2 nanofibers have been prepared through in situ electrospinning technique and calcination with poly(vinyl pyrrolidone) (PVP) nanofibers as sacrificed template. The as-prepared composite nanofibers are spin-coated onto a ceramic substrate with three pairs of carbon interdigital electrodes to measure its humidity sensing behaviors. The product exhibits high-speed response (2s) and recovery (1s) for detecting moisture. Additionally, under UV irradiation, a water contact angle (theta) of nearly 0 degrees has been observed based on the product, providing our humidity sensor with the anti-fogged properties.
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http://dx.doi.org/10.1016/j.talanta.2009.05.035DOI Listing
August 2009

Highly sensitive and stable humidity nanosensors based on LiCl doped TiO2 electrospun nanofibers.

J Am Chem Soc 2008 Apr 15;130(15):5036-7. Epub 2008 Mar 15.

Alan G. MacDiarmid Institute, Jilin University, Chang Chun 130012, PR China.

A new type of humidity nanosensor based on LiCl-doped TiO2 nanofibers with poly(vinyl pyrrolidone) (PVP) nanofibers as sacrificial template has been fabricated through electrospinning and calcination. The sensor exhibited excellent sensing characteristics, such as ultrafast response and recovery times, good reproducibility, linearity, and environmental stability, which are of importance for applications in humidity monitoring and control.
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http://dx.doi.org/10.1021/ja800176sDOI Listing
April 2008