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Individual effect of charge balance defects on the photocatalytic activity of Cr3+-modified TiO2

Mikhail Vladimirovich Korolenko 1
Mikhail Vladimirovich Korolenko
, 
Pavel Borisovich Fabrichnyi 1
Pavel Borisovich Fabrichnyi
,  , 
Christine Labrugère 2
Christine Labrugère
10.1016/j.mencom.2019.11.041
Published 2019-11-01
Communication , Volume 29, Issue 6, 718-719
8
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Korolenko M. V. et al. Individual effect of charge balance defects on the photocatalytic activity of Cr3+-modified TiO2 // Mendeleev Communications. 2019. Vol. 29. No. 6. pp. 718-719.
GOST all authors (up to 50) Copy
Korolenko M. V., Fabrichnyi P. B., Afanasov M. I., Labrugère C. Individual effect of charge balance defects on the photocatalytic activity of Cr3+-modified TiO2 // Mendeleev Communications. 2019. Vol. 29. No. 6. pp. 718-719.
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TY - JOUR
DO - 10.1016/j.mencom.2019.11.041
UR - https://mendcomm.colab.ws/publications/10.1016/j.mencom.2019.11.041
TI - Individual effect of charge balance defects on the photocatalytic activity of Cr3+-modified TiO2
T2 - Mendeleev Communications
AU - Korolenko, Mikhail Vladimirovich
AU - Fabrichnyi, Pavel Borisovich
AU - Afanasov, Mikhail Ivanovich
AU - Labrugère, Christine
PY - 2019
DA - 2019/11/01
PB - Mendeleev Communications
SP - 718-719
IS - 6
VL - 29
ER -
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@article{2019_Korolenko,
author = {Mikhail Vladimirovich Korolenko and Pavel Borisovich Fabrichnyi and Mikhail Ivanovich Afanasov and Christine Labrugère},
title = {Individual effect of charge balance defects on the photocatalytic activity of Cr3+-modified TiO2},
journal = {Mendeleev Communications},
year = {2019},
volume = {29},
publisher = {Mendeleev Communications},
month = {Nov},
url = {https://mendcomm.colab.ws/publications/10.1016/j.mencom.2019.11.041},
number = {6},
pages = {718--719},
doi = {10.1016/j.mencom.2019.11.041}
}
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Korolenko, Mikhail Vladimirovich, et al. “Individual effect of charge balance defects on the photocatalytic activity of Cr3+-modified TiO2.” Mendeleev Communications, vol. 29, no. 6, Nov. 2019, pp. 718-719. https://mendcomm.colab.ws/publications/10.1016/j.mencom.2019.11.041.

Abstract

Loss in the photocatalytic activity of Cr3+: TiO2 powders upon hydrogen annealing shows that charge-compensating oxygen vacancies VO and Cr6+ ions can have opposite effects on the kinetics of photocatalytic decolorization of methyl orange solution. The former ones inhibit this reaction acting as electron–hole recombination centers, and the latter ones promote it playing the role of active sites. This conclusion is verified by an XPS technique for a Cr3+-doped TiO2 sample and by 121Sb Mössbauer spectroscopy for a co-doped (Cr3+,Sb5+): TiO2 sample.

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