Mixed 3D/2D dimensional TiO2 nanoflowers/MoSe2 nanosheets for enhanced photoelectrochemical hydrogen generation

Journal of the American Ceramic Society - Tập 103 Số 2 - Trang 1187-1196 - 2020
Hongxia Li1, Chao Yang1, Xiaoyang Wang1, Jun Zhang1, Junhua Xi1, Gang Du1, Zhenguo Ji1
1College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, China

Tóm tắt

AbstractRecently, various kinds of methods have been implemented to broaden the visible light response and fasten the carrier's separation of TiO2‐based photoanodes. As a promising hydrogen evolution reaction catalyst, MoSe2 is rarely investigated especially combined with TiO2 photoanode. In this study, we report a composite photoanode of MoSe2 nanosheets (with 1T and 2H phase)‐modified 3D TiO2 nanoflowers (NFs).The hybrid of 3D TiO2 NFs/2D MoSe2 holds great promise in boosting the PEC water splitting performance. TiO2 NFs/MoSe2‐15 showed the largest photocurrent density of 1.40 mA/cm2, which was five times higher than that of pure TiO2 NFs under AM1.5G illumination. Moreover 10 times improvement in current density was observed for the TiO2 NFs/MoSe2‐15 under visible light. This increase could be ascribed to synergistic effects of light absorption enhancement and more efficient carrier separation after MoSe2 modification. This study not only provides a reference to boost the photoelectrochemical performance of photoelectrodes but also renders a perspective on the potential applications of MoSe2 nanosheets.

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Thông tin xuất bản

Journal of the American Ceramic Society

Tập 103 Số 2

1187-1196

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