najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2024-15-4-540-547najo-52Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХStudy of photocatalytic activity in two light ranges of Sr2Mn0.4Ti0.6O4 oxide with the K2NiF4-type structure.Исследование фотокаталитической активности в двух световых диапазонах оксида Sr2Mn0,4Ti0,6O4 со структурой типа K2NiF4https://orcid.org/0000-0002-1317-3803ЧупахинаТ.ChupakhinaT. I.

Tatyana I. Chupakhina

Pervomayskaya, 91, Ekaterinburg, 620990

chupakhina@yandex.ruhttps://orcid.org/0000-0002-0680-6094ГырдасоваО.GyrdasovaO. I.

Olga I. Gyrdasova

Pervomayskaya, 91, Ekaterinburg, 620990

gyrdasova@ihim.uran.ruhttps://orcid.org/0009-0006-1219-8909УпороваА.UporovaA. M.

Anastasya M. Uporova

Pervomayskaya, 91, Ekaterinburg, 620990

nastyauporova99@gmail.comhttps://orcid.org/0000-0003-3642-7121БулдаковаЛ.BuldakovaL. Y.

Larisa Y. Buldakova

Pervomayskaya, 91, Ekaterinburg, 620990

https://orcid.org/0000-0001-8306-906XЯнченкоМ.YanchenkoM. Y.

Mikhail Y. Yanchenko

Pervomayskaya, 91, Ekaterinburg, 620990

yanchenko@ihim.uran.ruМамедовД.MamedovD. V.

Dzhavid V. Mamedov

Kazan, 420029

javi-m@yandex.ruhttps://orcid.org/0000-0003-1207-7331ДееваЮ.DeevaYu. A.

Yulia A. Deeva

Pervomayskaya, 91, Ekaterinburg, 620990

juliahik@mail.ruhttps://orcid.org/0000-0002-5643-7004БаклановаИ.BaklanovaI. V.

Inna V. Baklanova

Pervomayskaya, 91, Ekaterinburg, 620990

inna.b@bk.ruInstitute of Solid State Chemistry UB RASRussian FederationZavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RASRussian Federation202431052025154540547Copyright © Chupakhina T.I., Gyrdasova O.I., Uporova A.M., Buldakova L.Y., Yanchenko M.Y., Mamedov D.V., Deeva Y.A., Baklanova I.V., 20252025Чупахина Т., Гырдасова О., Упорова А., Булдакова Л., Янченко М., Мамедов Д., Деева Ю., Бакланова И.Chupakhina T.I., Gyrdasova O.I., Uporova A.M., Buldakova L.Y., Yanchenko M.Y., Mamedov D.V., Deeva Y.A., Baklanova I.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/52

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.

Изучены фотокаталитические свойства однофазного образца Sr2Mn0.4Ti0.6O4 как представителя серии твердых растворов Sr2MnxTi1-xO4 (x = 0,05; 0,15; 0,25; 0,4), полученного методом СВС. Образец, отожженный при 1200°С, характеризуется равномерным распределением Sr, Ti и Mn степени окисления (4+) внутри агрегатов, средний размер которых не превышает 1 мкм. По данным UV-Vis-NIR -спектроскопии при легировании его 40 мол% марганца наблюдается сужение запрещенной зоны Sr2TiO4 с 3,16 до 1,8 эВ. Это связано с высокой фотоактивностью Sr2Mn0,4Ti0,6O4 в реакции окисления HQ в УФ и синем свете.

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The authors declare that there are no conflicts of interest present.