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Adv Mater 2022 May 19:e2110610. Epub 2022 May 19.

State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, 116023, P. R. China.

Photoelectrochemical (PEC) water splitting for renewable hydrogen production has been regarded as a promising solution to utilize solar energy. However, most of the photoelectrodes still suffer from poor film quality and poor charge separation properties, mainly owing to the possible formation of detrimental defects including microcracks and grain boundaries. Herein, we developed a molecular coordination engineering strategy by employing acetylacetone (Acac) and polyethylene glycol (PEG) dual ligands to regulate the nucleation and crystal growth of lead chromate (PbCrO ) photoanode, resulting in the formation of a high-quality film with large grain size, well-stitched grain boundaries and reduced oxygen vacancies defects. Read More

Phys Med Biol 2022 May 19. Epub 2022 May 19.

School of Biomedical Engineering, Southern Medical University, South Shatai Road 1063, Baiyun District, Guangzhou, China, Guangzhou, 510515, CHINA.

Objective: To develop and validate a graphics processing unit (GPU) based superposition Monte Carlo (SMC) code for efficient and accurate dose calculation in magnetic fields.

Approach: A series of mono-energy photons ranging from 25 keV to 7.7 MeV were simulated with EGSnrc in a water phantom to generate particle tracks database. Read More

Small Methods 2022 May 19:e2200459. Epub 2022 May 19.

School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China.

Electrochemical overall water splitting using renewable energy input is highly desirable for large-scale green hydrogen generation, but it is still challenged due to the lack of low-cost, durable, and highly efficient electrocatalysts. Herein, 1D nanowires composed of numerous 2 nm Co Se-NiSe nanograin heterojunctions as efficient precious metal-free bifunctional electrocatalyst are reported for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline solution with the merits of high activity, durability, and low cost. The abundant microinterface among the ultrafine nanograins and the presence of lattice distortion around nanograin interface is found to create a superhydrophilic surface of the electrocatalyst, which significantly facilitate the fast diffusion of electrolytes and the release of the formed H and O from the catalyst surface. Read More

NPJ Vaccines 2022 May 18;7(1):54. Epub 2022 May 18.

Department of Virology and Molecular Biology, Wageningen Bioveterinary Research, Wageningen University & Research, Lelystad, The Netherlands.

Rift Valley fever virus (RVFV) is an emerging mosquito-borne bunyavirus that is highly pathogenic to wild and domesticated ruminants, camelids, and humans. While animals are exclusively infected via mosquito bites, humans can also be infected via contact with contaminated tissues or blood. No human vaccine is available and commercialized veterinary vaccines do not optimally combine efficacy with safety. Read More

Nanotechnology 2022 May 18. Epub 2022 May 18.

The University of Tokyo, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Komaba 4-6-1, Meguro-ku, Tokyo, 153-8904, JAPAN.

Transition metal dichalcogenides (TMDCs) are versatile layered materials with potential applications ranging from optoelectronic devices to water splitting. Top-down fabrication methods such as exfoliation are not practical for a large-scale production of high-quality devices: a bottom-up approach such as sputtering, a low-temperature deposition method, is more suitable. However, due to its anisotropic nature, the growth mechanism of molybdenum disulfide (MoS) via sputtering is complex and remains to be investigated in detail. Read More