Double Z-Scheme Heterojunctions of CdS and ZnS Nanoparticles on Bimetallic Metal–Organic Frameworks for Photocatalytic H2 Production
Source abstract
Abstract
Construction of a heterojunction is one of the promising methods for obtaining the required photocatalysts with enhanced photocatalytic activity. In this study, the ternary heterostructures of ZnS/CdS/Zn-Cd-MOF were synthesized using a semiderivatization of bimetallic MOF strategy. The photocatalytic hydrogen evolution activity of ZnS/CdS/Zn-Cd-MOF under visible light irradiation was investigated. Its maximum hydrogen production rate is 27.65 mmol g –1 h –1, which is 32 times that of pure ZnS nanoparticles and 13 times that of pure CdS nanoparticles. Mechanism studies using UV–visible DRS, photoluminescence, surface photovoltage, Mott–Schottky diagrams, and electron EPR reveal that the double Z-scheme heterostructure is formed between ZnS, CdS nanoparticles, and Zn-Cd-MOF, which provides a directional carrier migration channel, further promotes electron transfer, and effectively separates photogenerated carriers, which significantly improves photocatalytic activity and stability. This study proposes a reasonable double Z-scheme heterojunction photocatalyst with high efficiency for hydrogen production.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Metal-Organic Frameworks: Synthesis and Applications · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
School of Environmental Science and Engineering, Yangzhou University, Yangzhou 225002, China
School of Chemistry and Chemical Engineering, Yancheng Institute of Technology,Yancheng, Jiangsu 224051, China
Laboratory of Advanced Functional Materials of Nanjing, Nanjing Xiaozhuang University, Nanjing 211171, China
Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China, School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou City, Jiangsu Province 215009, China
Funding
Scientific Research Project of Nanjing Xiaozhuang University · Natural Science Research Project of Jiangsu Higher Education Institutions
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