Тип публикации: статья из журнала

Год издания: 2025

Идентификатор DOI: 10.1134/S0023158425600348

Ключевые слова: Photoelectrocatalytic activity, TiO<sub>2</sub> nanotubes, <i>р</i>-Cu<sub>2</sub>O, <i>p-n</i> heterojunction

Аннотация: Electrodes based on TiO₂ nanotube arrays for the photoelectrochemical process of water splitting were modified with Cu₂O, a <i>p</i>-type semiconductor (<i>p</i>-Cu₂O). Cyclic voltammetry (CV) was used for the deposition of <i>p</i>-Cu₂O nanoparticles to achieve a more uniform distribution of the particles over the inner and outer surfaces of TiO₂ nanotubes. The measurements of incident photon-to-current conversion efficiency (IPCE) in the range of 365–660 nm demonstrated that the proposed method significantly enhanced photoactivity in the visible light region compared to the potentiostatic deposition method. The IPCE value was 0.18% at a wavelength of 523 nm, which was 7 and 45 times higher than those for the potentiostatically modified and pristine samples, respectively. Under continuous illumination with visible light at a wavelength of 523 nm and a potential of 0.2 V (Ag/AgCl_(sat.)), a transition from Cu₂O to CuO was observed for 5 h, which was accompanied by a decrease in the photocurrent density.

Журнал: Kinetics and Catalysis

Выпуск журнала: Т. 66, № 2

Номера страниц: 222-231

ISSN журнала: 00231584

Место издания: Moscow

Издатель: Pleiades Publishing, Ltd.

• Zos'Ko N.A. (Institute of Chemistry and Chemical Technology, Federal Research Center Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences)
• Aleksandrovsky A.S. (Siberian Federal University)
• Kenova T.A. (Institute of Chemistry and Chemical Technology, Federal Research Center Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences)
• Gerasimova M.A. (Siberian Federal University)
• Maksimov N.G. (Institute of Chemistry and Chemical Technology, Federal Research Center Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences)
• Zhizhaev A.M. (Institute of Chemistry and Chemical Technology, Federal Research Center Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences)
• Taran O.P. (Siberian Federal University)

• Ядро РИНЦ (eLIBRARY.RU)