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14 December 2016 Hydrothermal synthesis of TiO2/WO3 compositions and their photocatalytic activity
Sergey A. Pyachin, Natalia F. Karpovich, Alexey V. Zaitsev, Konstantin S. Makarevich, Alexander A. Burkov, Alexander Yu. Ustinov
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Proceedings Volume 10176, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics; 101760M (2016) https://doi.org/10.1117/12.2268789
Event: Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics, 2016, Khabarovsk, Russia
Abstract
Photocatalytic activity, optical properties, thermal stability, phase patterns and morphology of nano-size ТiО2/WO3 compositions obtained from organic precursors through hydrothermal synthesis have been studied. It has been shown that doping of anatase nanoparticles with tungsten W+6 results in particle diameter reduction from 35 to 10 nm; decrease in width of the band gap from 3.15 eV to 2.91 eV and increase in temperature of phase transition of anatase to rutile up to 980оС. Catalytic activity of ТiО2/WO3 (4 mol.%) composition under photochemical methylene blue (MB) oxidation by simulated solar light exceeds that of undoped anatase (obtained in the same way) 6-fold.
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Sergey A. Pyachin, Natalia F. Karpovich, Alexey V. Zaitsev, Konstantin S. Makarevich, Alexander A. Burkov, and Alexander Yu. Ustinov "Hydrothermal synthesis of TiO2/WO3 compositions and their photocatalytic activity", Proc. SPIE 10176, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics, 101760M (14 December 2016); https://doi.org/10.1117/12.2268789
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KEYWORDS
Doping
Oxides
Photocatalysis
Titanium
Tungsten
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