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Reports Outline Nanocomposites Findings from CSIR (Disordered Mesoporous TiO2-xNx+Nano-Au: An Electronically Integrated Nanocomposite for Solar H-2...

July 22, 2014



Reports Outline Nanocomposites Findings from CSIR (Disordered Mesoporous TiO2-xNx+Nano-Au: An Electronically Integrated Nanocomposite for Solar H-2 Generation)

By a News Reporter-Staff News Editor at Life Science Weekly -- Data detailed on Nanocomposites have been presented. According to news reporting out of Maharashtra, India, by NewsRx editors, research stated, "We report on H-2 generation by photocatalysis driven by simulated white light by electronically integrated Au nanoparticles with multifunctional, disordered mesoporous TiO2-xNx (Au-NT) nanocomposites. Solar H-2 generation (1.5 mmolh(-1)g(-1)) from aqueous methanol has been demonstrated with Au-NT nanocomposites."

Our news journalists obtained a quote from the research from CSIR, "The water splitting activity of Au-NT is attributed to the 21.1 ps lifetime of charge carriers observed from fluorescence lifetime measurements, which indicates a high electron-injection efficiency from nano-Au to the conduction band of TiO2, and hence charge separation as well as utilization. This is directly supported by the observation of a high photoluminescence emission intensity with Au-NT that highlights the energy transfer from nano-Au to TiO2. The p-n heterojunction observed between the Au (001) and TiO2 (101) facets helps to-wards the higher charge separation and their utilization. A low mesochannel depth (< 10 nm) associated with disordered mesoporous TiO2-xNx helps the charge carriers to move towards the surface for redox reactions and hence charge utilization. Visible-light absorption, as a result of the surface plasmon resonance of nano-Au, is observed in a broad range between 500 and 750 nm, which helps in harvesting visible-light photons. Finally, electronically integrated nano-Au with TiO2-xNx in Au-NT is evident from Raman and X-ray photoelectron spectroscopy measurements. All of these factors help to achieve a high rate of H-2 production."

According to the news editors, the research concluded: "It is likely that a higher rate of H-2 production than that reported here is feasible by strategically locating Au clusters in porous TiO2 to generate hot spots through electronic integration."

For more information on this research see: Disordered Mesoporous TiO2-xNx+Nano-Au: An Electronically Integrated Nanocomposite for Solar H-2 Generation. Chemcatchem, 2014;6(2):522-530. Chemcatchem can be contacted at: Wiley-V C H Verlag Gmbh, Boschstrasse 12, D-69469 Weinheim, Germany. (Wiley-Blackwell - www.wiley.com/; Chemcatchem - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1867-3899)

Our news journalists report that additional information may be obtained by contacting K. Sivaranjani, CSIR Network Inst Solar Energy NISE, Pune 411008, Maharashtra, India. Additional authors for this research include S. RajaAmbal, T. Das, K. Roy, S. Bhattacharyya and C.S. Gopinath (see also Nanocomposites).

Keywords for this news article include: Asia, India, Maharashtra, Nanotechnology, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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