Тип публикации: статья из журнала
Год издания: 2023
Идентификатор DOI: 10.1134/S1023193523100142
Ключевые слова: TiO2 nanotubes, anodic oxidation, electrochemical doping, activation, photoelectrochemical activity, water decomposition
Аннотация: TiO2 films with a 1D nanotube structure were obtained by electrochemical anodic oxidation of titanium foil. Electrochemical reductive activation of the TiO2-nanotube-based electrodes was carried out using the method of cyclic voltammetry. The activated electrodes showed significantly higher current density and quantum efficiency ofПоказать полностьюthe photoelectrochemical water splitting as compared to native TiO2 nanotubes. Electrochemical treatment of the electrodes by the cyclic voltammetry leads to increase in the photocurrent density by a factor of 4 to 14, depending both on the used wavelength and applied potential. The analysis of electrochemical impedance spectra showed that the increase in the photoelectrochemical process performance is due to increase in the charge transfer rate at the semiconductor/electrolyte interface, as well as improved electronic conductivity of the oxide layer, which contributes to better charge carrier separation and decrease in their recombination rate.
Журнал: Russian Journal of Electrochemistry
Выпуск журнала: Т.59, №10
Номера страниц: 767-773
ISSN журнала: 10231935
Место издания: Москва
Издатель: Pleiades Publishing, Ltd. (Плеадес Паблишинг, Лтд)