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Ultrathin ZnIn 2 S 4 Nanosheets Anchored on Ti 3 C 2 T X MXene for Photocatalytic H 2 Evolution
Author(s) -
Zuo Gancheng,
Wang Yuting,
Teo Wei Liang,
Xie Aming,
Guo Yang,
Dai Yuxuan,
Zhou Weiqiang,
Jana Deblin,
Xian Qiming,
Dong Wei,
Zhao Yanli
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202002136
Subject(s) - heterojunction , photocatalysis , materials science , schottky barrier , semiconductor , water splitting , epitaxy , chemical engineering , nanotechnology , optoelectronics , catalysis , chemistry , layer (electronics) , biochemistry , diode , engineering
Photocatalysts derived from semiconductor heterojunctions that harvest solar energy and catalyze reactions still suffer from low solar‐to‐hydrogen conversion efficiency. Now, MXene (Ti 3 C 2 T X ) nanosheets (MNs) are used to support the in situ growth of ultrathin ZnIn 2 S 4 nanosheets (UZNs), producing sandwich‐like hierarchical heterostructures (UZNs‐MNs‐UZNs) for efficient photocatalytic H 2 evolution. Opportune lateral epitaxy of UZNs on the surface of MNs improves specific surface area, pore diameter, and hydrophilicity of the resulting materials, all of which could be beneficial to the photocatalytic activity. Owing to the Schottky junction and ultrathin 2D structures of UZNs and MNs, the heterostructures could effectively suppress photoexcited electron–hole recombination and boost photoexcited charge transfer and separation. The heterostructure photocatalyst exhibits improved photocatalytic H 2 evolution performance (6.6 times higher than pristine ZnIn 2 S 4 ) and excellent stability.