Back to Search Start Over

Constructing a 3D Bi2WO6/ZnIn2S4 direct Z-scheme heterostructure for improved photocatalytic CO2 reduction performance.

Authors :
Yang, Wu
Zhou, Fanghe
Sun, Ningchao
Wu, Jiang
Qi, Yongfeng
Zhang, Yonglin
Song, Jingyu
Sun, Yijing
Liu, Qizhen
Wang, Xudong
Mi, Jianing
Li, Miao
Source :
Journal of Colloid & Interface Science. May2024, Vol. 662, p695-706. 12p.
Publication Year :
2024

Abstract

[Display omitted] • Constructing a 3D morphology Bi 2 WO 6 /ZnIn 2 S 4 direct Z-scheme heterojunctions through the electrostatic self-assembly method. • The performance of photocatalytic CO 2 reduction is dramatically improved under the synergistic effect of morphology interface engineering modification strategies. • Under simulated sunlight irradiation conditions, the CH 4 yield of BZ-20 was 8.73 and 16.30 times higher than that of the pure ZnIn 2 S 4 and Bi 2 WO 6 samples, respectively. Developing efficient heterojunction photocatalysts with enhanced charge transfer and reduced recombination rates of photogenerated carriers is crucial for harnessing solar energy in the photocatalytic CO 2 reduction into renewable fuels. This study employed electrostatic self-assembly techniques to construct a 3D Bi 2 WO 6 /ZnIn 2 S 4 direct Z-scheme heterojunctions. The unique 3D structure provided abundant active sites and facilitated CO 2 adsorption. Moreover, the optimized Bi 2 WO 6 /ZnIn 2 S 4 composite demonstrated an impressive CH 4 yield of 19.54 μmol g−1 under 4 h of simulated sunlight irradiation, which was about 8.73 and 16.30-fold higher than pure ZnIn 2 S 4 and Bi 2 WO 6. The observed enhancements in photocatalytic performance are attributed to forming a direct Z-scheme heterojunction, which effectively promotes charge transport and migration. This research introduces a novel strategy for constructing photocatalysts through the synergistic effect of morphological interface modifications. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00219797
Volume :
662
Database :
Academic Search Index
Journal :
Journal of Colloid & Interface Science
Publication Type :
Academic Journal
Accession number :
175901400
Full Text :
https://doi.org/10.1016/j.jcis.2024.02.119