By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Hydrogen. According to news originating from Singapore, Singapore, by NewsRx correspondents, research stated, "Efficient evolution of hydrogen through electrocatalysis at low overpotentials holds tremendous promise for clean energy. Hydrogen evolution can be easily achieved by electrolysis at large potentials that can be lowered with expensive platinum-based catalysts."
Our news journalists obtained a quote from the research from Singapore National University, "Replacement of Pt with inexpensive, earth-abundant electrocatalysts would be significantly beneficial for clean and efficient hydrogen evolution. To this end, promising results have been reported using 2H (trigonal prismatic) XS2 (where X = Mo or W) nanoparticles with a high concentration of metallic edges. The key challenges for XS2 are increasing the number and catalytic activity of active sites. Here we report monolayered nanosheets of chemically exfoliated WS2 as efficient catalysts for hydrogen evolution with very low overpotentials. Analyses indicate that the enhanced electrocatalytic activity of WS2 is associated with the high concentration of the strained metallic 1T (octahedral) phase in the as-exfoliated nanosheets."
According to the news editors, the research concluded: "Our results suggest that chemically exfoliated WS2 nanosheets are interesting catalysts for hydrogen evolution."
For more information on this research see: Enhanced catalytic activity in strained chemically exfoliated WS2 nanosheets for hydrogen evolution. Nature Materials, 2013;12(9):850-855. Nature Materials can be contacted at: Nature Publishing Group, Macmillan Building, 4 Crinan St, London N1 9XW, England. (Nature Publishing Group - www.nature.com/; Nature Materials - www.nature.com/nmat/)
The news correspondents report that additional information may be obtained from D. Voiry, Singapore National University, Dept. of Chem, Singapore 117543, Singapore. Additional authors for this research include H. Yamaguchi, J.W. Li, R. Silva, D.C.B. Alves, T. Fujita, M.W. Chen, T. Asefa, V.B. Shenoy, G. Eda and M. Chhowalla (see also Hydrogen).
Keywords for this news article include: Asia, Gases, Elements, Hydrogen, Nanosheets, Nanotechnology, Inorganic Chemicals, Emerging Technologies
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