Rotation Tunable Type‐I/Type‐II Band Alignment and Photocatalytic Performance of g‐C3N4/InSe van der Waals Heterostructure. Issue 7 (13th May 2021)

• Record Type: Journal Article
• Authors: Chang, Junli; Zhao, Wei; Wang, Guangzhao; Ang, Yee Sin
• Is Part Of: Physica status solidi. Volume 15:Issue 7(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-05-13
• Subjects: g-C3N4/InSe -- heterostructures -- photocatalysis -- rotation, water splitting; Solid state physics -- Periodicals; 530.4105
• DOI: 10.1002/pssr.202100171
• Languages: English
• ISSNs: 1862-6254

Abstract

Abstract : Photocatalysis is a promising way to overcome the current energy crisis and environmental pollution due to its cleanliness and sustainability. Herein, g‐C3 N4 /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. Abstract : The g‐C3 N4 /InSe (CNIS) heterostructure (HS) can achieve a transition from type‐II to type‐I by altering the rotation angles, and the 0° g‐CNIS HS is a potential photocatalyst for water splitting.