|
ИСТИНА |
Войти в систему Регистрация |
ИПМех РАН |
||
Effect of Thermal Treatment of Symmetric TiO2 Nanotube Arrays in Argon on Photocatalytic CO2 Conversionстатья
- Авторы: Savchuk Timofey, Gavrilin Ilya, Savitskiy Andrey, Dronov Alexey, Dronova Daria, Pereverzeva Svetlana, Tarhanov Andrey, Maniecki Tomasz, Gavrilov Sergey, Konstantinova Elizaveta
- Журнал: Symmetry
- Том: 14
- Год издания: 2022
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 2678-1
- Последняя страница: 2678-13
- DOI: 10.3390/sym14122678
- Аннотация: Symmetric titania nanotube arrays (TiO2 NTs) are a well-known photocatalyst with a largesurface area and band edge potentials suitable for redox reactions. Thermal treatment of symmetricalarrays of TiO2 nanotubes in argon was used to change the carbon content of the samples. Theinfluence of the carbon content in the structure of symmetrical TiO2 NTs on their photoelectrochemicalproperties and photocatalytic activity in the conversion of CO2 into organic fuel precursors has beenstudied. The structure, chemical, and phase composition of obtained samples were studied byX-ray analysis, Raman spectroscopy, and SEM with energy dispersive analysis. It is establishedthat carbon-related defects in the samples accumulate electrons on the surface required for the CO2conversion reaction. It has been shown for the first time that varying the carbon content in symmetricTiO2 NTs arrays by annealing at different temperatures in argon makes it possible to control theyield of methane and methanol in CO2 conversion. It is revealed that too high a concentration ofcarbon dangling bonds promotes the growth of CO2 conversion efficiency but causes instability inthis process. The obtained results show a high promise of symmetric carbon-doped TiO2 NTs arraysfor the photocatalytic conversion of CO2.
- Добавил в систему: Константинова Елизавета Александровна