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Zhang B, Xiao W, Hu J, Liu J, Xu H, Zheng X, Wang W, Wu H, Xi X, Dong P, Ji H. Carbonized polymer dots modified ZnIn 2S 4 microspheres for visible-light-driven hydrogen evolution promotion performance. J Colloid Interface Sci 2023; 651:948-958. [PMID: 37579669 DOI: 10.1016/j.jcis.2023.08.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/04/2023] [Accepted: 08/09/2023] [Indexed: 08/16/2023]
Abstract
To effectively separate electron-hole pairs produced by light, a heterojunction arrangement can be employed, thereby improving photocatalytic efficiency. In this study, a simple hydrothermal process is used to manufacture carbonized polymer dots/ZnIn2S4 (CPDs/ZIS) heterostructure, which enhances the light absorption and charge carrier lifetime in comparison to bare ZnIn2S4 (ZIS). Upon irradiation with visible light, the 3-CPDs/ZIS composite generates hydrogen at a rate of 133 μmol g-1 h-1, which is 8.9 times faster than that of pure ZIS. The addition of CPDs can increase the range of light that can be absorbed, extend the service life of the optical charge, increase the specific surface area, and promote charge separation and transmission, which could effectively accelerate the photocatalytic reduction reaction. The presence of CPDs results in the introduction of multiple transition energy states and a decrease in the H* adsorption free energy, which enhances the hydrogen evolution activity according to the theoretical calculation findings of density functional theory (DFT) and Gibbs free energy of the hydrogen evolution process. Combining theoretical calculations and experimental results, a direct Z-type heterojunction mechanism is proposed for the hydrogen evolution promotion effectiveness of CPDs/ZIS under visible light.
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Affiliation(s)
- Beibei Zhang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Wen Xiao
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Jiawei Hu
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Jinhong Liu
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Hui Xu
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Xueqing Zheng
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Wuyou Wang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Haibo Wu
- Advanced Energy Science and Technology Guangdong Laboratory, Research Institute of Sun Yat-sen University in Huizhou, Huizhou 516081, PR China
| | - Xinguo Xi
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China.
| | - Pengyu Dong
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, PR China.
| | - Hongbing Ji
- Advanced Energy Science and Technology Guangdong Laboratory, Research Institute of Sun Yat-sen University in Huizhou, Huizhou 516081, PR China.
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Cheng L, Yu X, Huang D, Wang H, Wu Y. Piezocatalytic performance of Fe2O3−Bi2MoO6 catalyst for dye degradation. Front Chem Sci Eng 2023. [DOI: 10.1007/s11705-022-2265-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
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