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Rotation Tunable Type‐I/Type‐II Band Alignment and Photocatalytic Performance of g‐C 3 N 4 /InSe van der Waals Heterostructure
Author(s) -
Chang Junli,
Zhao Wei,
Wang Guangzhao,
Ang Yee Sin
Publication year - 2021
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.202100171
Subject(s) - photocatalysis , heterojunction , water splitting , materials science , band gap , optoelectronics , rotation (mathematics) , visible spectrum , absorption (acoustics) , charge carrier , van der waals force , type (biology) , chemistry , molecule , computer science , catalysis , biochemistry , organic chemistry , artificial intelligence , composite material , ecology , biology
Photocatalysis is a promising way to overcome the current energy crisis and environmental pollution due to its cleanliness and sustainability. Herein, g‐C 3 N 4 /InSe (CNIS) heterostructures (HSs) with different rotation angles are constructed to achieve highly efficient photocatalytic water splitting. It is shown that the CNIS HSs can achieve a transition from type‐II to type‐I by switching the rotation angles between 0° and 60°, 120°. The band edges of 0° CNIS are thermodynamically favorable for spontaneous water splitting within the pH scope of 0–5.7. In addition, the bandgap and optical spectra suggest that the 0° CNIS has excellent visible‐light absorption ability, and the presence of a substantial built‐in electric field across the interface induced by charge transfer can be highly beneficial twoard the photoexcited carrier separation. These results pave the way for designing novel 2D water‐splitting photocatalysts.