Reports Outline Nanocomposites Findings from CSIR (Disordered Mesoporous TiO2-xNx+Nano-Au: An Electronically Integrated Nanocomposite for Solar H-2 Generation)
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:
Our news journalists report that additional information may be obtained by contacting K. Sivaranjani, CSIR Network Inst Solar Energy NISE,
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