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Mixed 3D/2D dimensional TiO 2 nanoflowers/MoSe 2 nanosheets for enhanced photoelectrochemical hydrogen generation
Author(s) -
Li Hongxia,
Yang Chao,
Wang Xiaoyang,
Zhang Jun,
Xi Junhua,
Du Gang,
Ji Zhenguo
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16807
Subject(s) - photocurrent , materials science , water splitting , visible spectrum , chemical engineering , nanotechnology , hydrogen production , photocatalysis , catalysis , optoelectronics , chemistry , biochemistry , engineering
Recently, v arious kinds of methods have been implemented to broaden the visible light response and fasten the carrier's separation of TiO 2 ‐based photoanodes. As a promising hydrogen evolution reaction catalyst, MoSe 2 is rarely investigated especially combined with TiO 2 photoanode. In this study, we report a composite photoanode of MoSe 2 nanosheets (with 1T and 2H phase)‐modified 3D TiO 2 nanoflowers (NFs).The hybrid of 3D TiO 2 NFs/2D MoSe 2 holds great promise in boosting the PEC water splitting performance. TiO 2 NFs/MoSe 2 ‐15 showed the largest photocurrent density of 1.40 mA/cm 2 , which was five times higher than that of pure TiO 2 NFs under AM1.5G illumination. Moreover 10 times improvement in current density was observed for the TiO 2 NFs/MoSe 2 ‐15 under visible light. This increase could be ascribed to synergistic effects of light absorption enhancement and more efficient carrier separation after MoSe 2 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 MoSe 2 nanosheets.