By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Chalcogens. According to news originating from Fuzhou, People's Republic of China, by NewsRx correspondents, research stated, "A synergistic strategy involving oxygen-vacancy generation and noble-metal deposition is developed to improve the photocatalytic performance of TiO2 under visible-light irradiation. Through a redox reaction between the reductive TiO2 with oxygen vacancies (TiO2-OV) and metal salt precursors, noble-metal nanoparticles (Ag, Pt, and Pd) are uniformly deposited on the defective TiO2-OV surface in the absence of any reducing agents or stabilizing ligands."
Our news journalists obtained a quote from the research from Fuzhou University, "The resulting M-TiO2-OV (M = Ag, Pt, and Pd) nanocomposites are used as visible-light-driven photocatalysts for selective oxidation of benzyl alcohol and reduction of heavy metal ions Cr(VI). The results show that the oxygen vacancy creation obviously enhances the visible-light absorption of semiconductor TiO2. Meanwhile, the noble-metal deposition can effectively improve charge-separation efficiency of TiO2-OV under visible-light irradiation, thereby enhancing the photoactivity. In particular, Pd-TiO2-OV, having the average Pd particle size of 2 nm, shows the highest visible-light photoactivity, which can be attributed to the more efficient charge-carrier separation of Pd-TiO2-OV than Ag-TiO2-OV and Pt-TiO2-OV. The possible reaction mechanism for photocatalytic selective oxidation of benzyl alcohol and reduction of Cr(VI) over M-TiO2-OV (M = Ag, Pt, and Pd) has also been studied."
According to the news editors, the research concluded: "It is hoped that our work could offer a simple strategy on fabricating defect-based nanostructures and their applications in solar energy conversion."
For more information on this research see: y Defect-Mediated Growth of Noble-Metal (Ag, Pt, and Pd) Nanoparticles on TiO2 with Oxygen Vacancies for Photocatalytic Redox Reactions under Visible Light. Journal of Physical Chemistry C, 2013;117(35):17996-18005. Journal of Physical Chemistry C can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Journal of Physical Chemistry C - www.pubs.acs.org/journal/jpccck)
The news correspondents report that additional information may be obtained from X.Y. Pan, Fuzhou Univ, Coll Chem & Chem Engn, Fuzhou 350108, People's Republic of China (see also Chalcogens).
Keywords for this news article include: Asia, Fuzhou, Chalcogens, Nanoparticle, Photocatalyst, Nanotechnology, Photocatalytic, Emerging Technologies, People's Republic of China
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