Отправить статью по E-mail Influence of Defects on Photoconductivity and Photocatalytic Activity of Nitrogen-Doped Titania
- Авторы: Minnekhanov A.A.1,2, Le N.T.1, Konstantinova E.A.1,2,3, Kashkarov P.K.1,2,3
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Учреждения:
- Faculty of Physics, M. V. Lomonosov Moscow State University
- National Research Center Kurchatov Institute
- Faculty of Nano-, Bio-, Information and Cognitive Technologies, Moscow Institute of Physics and Technology
- Выпуск: Том 48, № 4 (2017)
- Страницы: 335-345
- Раздел: Original Paper
- URL: https://journal-vniispk.ru/0937-9347/article/view/247679
- DOI: https://doi.org/10.1007/s00723-017-0870-4
- ID: 247679
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Аннотация
Samples of nitrogen-doped titanium dioxide (anatase, 0.2 ≤ N ≤ 1.0 wt%) prepared by the sol–gel method were investigated using X-band electron paramagnetic resonance spectroscopy, photoconductivity, and photocatalysis measurements. N· and NO· paramagnetic defects in N-TiO2 have been observed; their concentrations and spin-Hamiltonian parameters were calculated. An increase both in the rate of the generation of free charge carriers and in the rate of photocatalysis was found in N-TiO2 in contrast with non-doped titania under visible light. The correlation of the density of the observed radicals with the photoconductivity and photocatalysis data is discussed.
Об авторах
A. Minnekhanov
Faculty of Physics, M. V. Lomonosov Moscow State University; National Research Center Kurchatov Institute
Автор, ответственный за переписку.
Email: minnekhanov@physics.msu.ru
Россия, Moscow, 119991; Moscow, 123182
N. Le
Faculty of Physics, M. V. Lomonosov Moscow State University
Email: minnekhanov@physics.msu.ru
Россия, Moscow, 119991
E. Konstantinova
Faculty of Physics, M. V. Lomonosov Moscow State University; National Research Center Kurchatov Institute; Faculty of Nano-, Bio-, Information and Cognitive Technologies, Moscow Institute of Physics and Technology
Email: minnekhanov@physics.msu.ru
Россия, Moscow, 119991; Moscow, 123182; Dolgoprudny, Moscow Region, 141700
P. Kashkarov
Faculty of Physics, M. V. Lomonosov Moscow State University; National Research Center Kurchatov Institute; Faculty of Nano-, Bio-, Information and Cognitive Technologies, Moscow Institute of Physics and Technology
Email: minnekhanov@physics.msu.ru
Россия, Moscow, 119991; Moscow, 123182; Dolgoprudny, Moscow Region, 141700
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