Black Si-doped TiO Nanotube Photoanode for High-efficiency Photoelectrochemical Water Splitting

Overview

Journal RSC Adv

Publisher Royal Society of Chemistry

Specialty Chemistry

Date 2022 May 11

PMID 35539613

Authors

Zhenbiao Dong

Dongyan Ding

Ting Li

Congqin Ning

Affiliations

Soon will be listed here.

Abstract

Black Si-doped TiO (Ti-Si-O) nanotubes were fabricated through Zn metal reduction of the Ti-Si-O nanotubes on Ti-Si alloy in an argon atmosphere. The nanotubes were used as a photoanode for photoelectrochemical (PEC) water splitting. Both Si element and Ti/oxygen vacancies were introduced into the black Ti-Si-O nanotubes, which improved optical absorption and facilitated the separation of the photogenerated electron-hole pairs. The photoconversion efficiency could reach 1.22%, which was 7.18 times the efficiency of undoped TiO. It demonstrated that a Si element and Ti/oxygen vacancy co-doping strategy could offer an effective method for fabricating a high-performance TiO-based nanostructure photoanode for improving PEC water splitting.

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