Библиографическое описание:Effect of the Modification Method of TiO2 Nanotubes with Cu2O on Their Activity in Photoelectrochemical Water Splitting : научное издание / N. A. Zos'Ko [et al.]. - Текст : непосредственный // Kinetics and Catalysis. - 2025. - Т. 66, № 2. - P. 222-231. - This work was carried out within the framework of a state contract at the Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences (project no. FWES-2024-0032) using the equipment of the Krasnoyarsk Regional Research Equipment Centre, Siberian Branch, Russian Academy of Sciences. - ISSN 0023-1584. - ISSN 1608-3210, DOI 10.1134/S0023158425600348.
Аннотация:Electrodes based on TiO<sub>2</sub> nanotube arrays for the photoelectrochemical process of water splitting were modified with Cu<sub>2</sub>O, a <i>p</i>-type semiconductor (<i>p</i>-Cu<sub>2</sub>O). Cyclic voltammetry (CV) was used for the deposition of <i>p</i>-Cu<sub>2</sub>O nanoparticles to achieve a more uniform distribution of the particles over the inner and outer surfaces of TiO<sub>2</sub> 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<sub>(sat.)</sub>), a transition from Cu<sub>2</sub>O to CuO was observed for 5 h, which was accompanied by a decrease in the photocurrent density.
Держатель оригинала документа:Institute of Chemistry and Chemical Technology, Federal Research Center Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Kirensky Institute of Physics, Federal Research Center Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Siberian Federal University
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