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Construction of 2D BiVO 4 −CdS−Ti 3 C 2 T x Heterostructures for Enhanced Photo‐redox Activities
Author(s) -
Wang Wuyou,
Hood Zachary D.,
Zhang Xuanyu,
Ivanov Ilia N.,
Bao Zhenghong,
Su Tongming,
Jin Mingzhou,
Bai Lei,
Wang Xuewen,
Zhang Rongbin,
Wu Zili
Publication year - 2020
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202000448
Subject(s) - heterojunction , photocatalysis , catalysis , materials science , redox , photodegradation , water splitting , hydrogen production , photochemistry , semiconductor , visible spectrum , chemistry , optoelectronics , biochemistry , metallurgy
Photocatalytic evolution of hydrogen and oxygen from water splitting over semiconductors is an efficient method for solar energy conversion. In this study, the 2D/2D BiVO 4 −CdS heterostructures with Ti 3 C 2 T x (T x =O, OH, F) as a co‐catalyst were synthesized by two steps as the visible‐light‐driven photocatalysts. Compared with BiVO 4 and CdS, the heterostructured catalysis exhibit greatly enhanced photocatalytic hydrogen and oxygen production performances and excellent photodegradation and photoreduction activities of methylene blue (MB) and potassium dichromate Cr(VI), respectively. The remarkable enhancement is attributed to the proposed Z‐scheme carrier transfer derived from the 2D/2D BiVO 4 −CdS heterostructures. Charge separation and transfer of photoexcited electrons and holes pairs are further enhanced after loading Ti 3 C 2 T x in the BiVO 4 −CdS heterostructures. The potential Z‐scheme photocatalytic system and co‐catalyst endows the BiVO 4 −CdS−Ti 3 C 2 T x heterostructures with strong photo‐redox capacity and excellent stability in solar energy conversion.