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Information × Registration Number 0210U000633, 0108U002397 , R & D reports Title Photochemical processes coith with participation of semiconductor nanoparticles sensitized with transition metal complexes popup.stage_title Head Kuchmii Stepan Yaroslavovich, Registration Date 02-03-2010 Organization L.V.Pysarzhevsky Institute of Physical Chemistry of National Academy of Science of Ukraine popup.description2 Objects of study - semiconductors nanoparticles and nanocomposites, photochemical and photocatalytic processes. The aim of the project - addressing of the fundamental problem of the mechanisms of photochemical and photocatalytic reactions with the participation of semiconductor nanoparticles and metal complexes. Experimental methods - stationary and pulse photolysis, absorption and luminescence spectroscopy, microscopy, X-ray diffraction. The reported data about the present state of the problem of photochemical formation of nanostructurized semiconductors as well as control of their photophysical and photocatalytic properties are summarized. A dependence between composition CdxZn1-xS nanoparticles, their capacity of negative charge accumulation and photocatalytic activity in hydrogen evolution from aqueous sodium sulfite solution and gold(IIІ) complex reduction was established. It was shown that nickel nanoparticles photodeposited on the surface of CdxZn1-xS nanocrystals is an efficient catalysts of hydrogen formation. A promotory action of ZnII in the photocatalytic systems for hydrogen production based on CdxZn1-xS and NiII was found. The characteriscics of the photocatalytic NaAuCl4 reduction with the participation of ZnO nanoparticles are studied. It was shoen that photoproduced ZnО/Au nanocomposites have a high capacity for the storage of an excess charge. Using the laser pulse photolysis it was found that the photocatalytically-produced TiО2/CdS nanoheterostructures feature 10-times more pronounced primary charge separation efficiency as compared to the chemically-produced nanocomposites. Photocatalytic properties of film TiO2/CdS nanoheterostructures were studied. It was found that the photogenerated TiO2/CdS nanoheterostructures are more efficient photocatalysts of redox-reactions of inorganic and organic substrates in aqueous mediums than similar nanostructures produced by conventional chemical routes. Product Description popup.authors Кучмій Степан Ярославович Раєвська Олександра Євгенівна Строюк Олександр Леонідович Швалагін Віталій Васильович popup.nrat_date 2020-04-02 Close