Study of photocatalytic activity in two light ranges of Sr2Mn0.4Ti0.6O4 oxide with the K2NiF4-type structure.
T. I. Chupakhina,
O. I. Gyrdasova,
A. M. Uporova,
L. Y. Buldakova,
M. Y. Yanchenko,
D. V. Mamedov,
Yu. A. Deeva,
I. V. Baklanova https://doi.org/10.17586/2220-8054-2024-15-4-540-547
Abstract
The photocatalytic properties of single-phase sample Sr2Mn0.4Ti0.6O4 is studied as a representative of a series of Sr2MnxTi1−xO4 solid solutions (x = 0.05, 0.15, 0.25, 0.4) obtained by the SHS. The sample annealed at 1200 ◦C is characterized by a uniform distribution of Sr, Ti and Mn in the oxidation degree (4+) in side the aggregates, the average size of which does not exceed 1 μm. According to UV-Vis-NIR spectroscopy data, a narrowing of the band gap of Sr2TiO4 from 3.16 to 1.8 eV is observed when it is doped with 40 mol% of manganese. This is due to the high photoactivity of Sr2Mn0.4Ti0.6O4 in the HQ oxidation reaction in UV and blue light.
Supporting agencies: The work was supported by RCF, project No. 24-23-20123. The UV-Vis-NIR spectrum was recorded on equipment of the Center for Joint Use “Spectroscopy and Analysis of Organic Compounds” at the Postovsky Institute of Organic Synthesis, UB RAS.
About the Authors
T. I. Chupakhina
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
Tatyana I. Chupakhina
Pervomayskaya, 91, Ekaterinburg, 620990
O. I. Gyrdasova
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
Olga I. Gyrdasova
Pervomayskaya, 91, Ekaterinburg, 620990
A. M. Uporova
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
Anastasya M. Uporova
Pervomayskaya, 91, Ekaterinburg, 620990
L. Y. Buldakova
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
Larisa Y. Buldakova
Pervomayskaya, 91, Ekaterinburg, 620990
M. Y. Yanchenko
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
Mikhail Y. Yanchenko
Pervomayskaya, 91, Ekaterinburg, 620990
D. V. Mamedov
Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS
Russian Federation
Russian Federation
Dzhavid V. Mamedov
Kazan, 420029
Yu. A. Deeva
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
Yulia A. Deeva
Pervomayskaya, 91, Ekaterinburg, 620990
I. V. Baklanova
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
Inna V. Baklanova
Pervomayskaya, 91, Ekaterinburg, 620990
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Review
For citations:
Chupakhina T.I., Gyrdasova O.I., Uporova A.M., Buldakova L.Y., Yanchenko M.Y., Mamedov D.V., Deeva Yu.A., Baklanova I.V. Study of photocatalytic activity in two light ranges of Sr2Mn0.4Ti0.6O4 oxide with the K2NiF4-type structure. Nanosystems: Physics, Chemistry, Mathematics. 2024;15(4):540-547. https://doi.org/10.17586/2220-8054-2024-15-4-540-547
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