Ni, In co-doped ZnIn2S4 for efficient hydrogen evolution: Modulating charge flow and balancing H adsorption/desorption

Element doping is an excellent strategy to promote charge separation and reaction kinetics of photocatalyst, which plays significant role in accelerating the sustainable energy development process. Herein, Ni, In co-doped ZnIn2S4 photocatalyst was prepared by a microwave-assisted solvothermal method...

Full description

Saved in:
Bibliographic Details
Published in:Applied catalysis. B, Environmental Environmental, 2022-08, Vol.310, p.121337, Article 121337
Main Authors: Zhou, Dongxue, Xue, Xiangdong, Wang, Xing, Luan, Qingjie, Li, Ang, Zhang, Liguo, Li, Baozhen, Dong, Wenjun, Wang, Ge, Hou, Changmin
Format: Article
Language:English
Subjects:
Adsorption
Catalytic activity
Crystallization
Desorption
Doping
H adsorption/desorption
Hydrogen evolution
Microbalances
Ni, In co-doping
Photocatalysis
Photocatalyst
Photocatalysts
Potential wells
Reaction kinetics
Renewable energy
Sustainability
Sustainable development
Zinc
ZnIn2S4
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Element doping is an excellent strategy to promote charge separation and reaction kinetics of photocatalyst, which plays significant role in accelerating the sustainable energy development process. Herein, Ni, In co-doped ZnIn2S4 photocatalyst was prepared by a microwave-assisted solvothermal method. The rapid crystallization of ZnIn2S4 resulted in partial In atoms substituted Zn atom during the formation of [ZnS]4 layer. In doping in tetrahedral Zn sites increases the electron delocalization around In sites, hence reduces the electronic potential wells along Z axis. Ni doping in tetrahedral Zn sites decreases the negative charge on the S sits, which balances the H adsorption/desorption, further boosting the photocatalytic activity. As a result, Ni, In co-doped ZnIn2S4 possess an optimal photocatalytic H2 evolution property of 21.94 μmol·h−1, which is nearly 1.8 and 6.1 times of In-ZnIn2S4 (11.78 μmol·h−1) and ZnIn2S4 (3.6 μmol·h−1). [Display omitted] •In doping reduces the electronic potential wells, promoting the charges transport.•Ni doping decreases the negative charge on S sits, balance H adsorption/desorption.•Ni, In co-doped ZnIn2S4 possess an optimal photocatalytic H2 evolution property.
ISSN:0926-3373
1873-3883
DOI:10.1016/j.apcatb.2022.121337