By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Photocatalytics. According to news reporting from Ostrava, Czech Republic, by NewsRx journalists, research stated, "Gold-enriched TiO2 and TiO2-ZrO2 and their parent counterparts were prepared by using the sol-gel process controlled within the reverse micelles environment, followed by impregnation in AuCl3 solution. Catalysts were characterized by organic elementary analysis (OEA), inductively coupled plasma mass spectrometry (ICP MS), N-2 physisorption, powder X-ray diffraction (XRD), transmission electron microscopy (TEM) combined with electron diffraction, UV-vis spectroscopy, and tested in CO2 photocatalytic reduction."
The news correspondents obtained a quote from the research from Technical University, "The performance of photocatalysts iluminated by UV-lamp with the wavelenght maximum at 254 nm was decreasing in the order TiO2-ZrO2 > Au/TiO2-ZrO2 > TiO2 > Au/TiO2 > TiO2 Evonic P25. The photocatalytic performance decrease over Au/TiO2-ZrO2 and Au/TiO2, compared to their parent counterparts, can be explained by the presence of too large Au particles, which block the oxide surface and either reduce the light absorption capability of the catalysts, or serve as the recombination centres. Higher photocatalytic performance of the amorphous TiO2-ZrO2 than of the nanocrystalline TiO2 can be ascribed to the enlarged surface area and higher photoactivity of titania-zirconia oxide mixture under the UV lamp with the wavelenght maximum at 254 nm. With regard to crystalline materials the appropriate anatase crystallite-size plays a key role in performance of CO2 photocatalytic reduction."
According to the news reporters, the research concluded: "Moreover, correlation between the adsorption edge and the anatase crystallite-size was revealed."
For more information on this research see: On sol-gel derived Au-enriched TiO2 and TiO2-OZrO2 Photocatalysts and their investigation in photocatalytic reduction of carbon dioxide. Applied Surface Science, 2013;285():688-696. Applied Surface Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Applied Surface Science - www.elsevier.com/wps/product/cws_home/505669)
Our news journalists report that additional information may be obtained by contacting L. Matejova, Technical Univ Ostrava, Inst Environm Technol, Ostrava 70833, Czech Republic. Additional authors for this research include K. Koci, M. Reli, L. Capek, V. Matejka, O. Solcova and L. Obalova (see also Photocatalytics).
Keywords for this news article include: Europe, Ostrava, Chemicals, Chemistry, Photocatalyst, Czech Republic, Carbon Dioxide, Nanotechnology, Emerging Technologies, Inorganic Carbon Compounds
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