Defect Engineering Modulation of CdS-Based Nanorods to Promote the Visible Light Driven Photocatalytic Hydrogen Production

Yuye Cheng; Mengjie Yao; Kai Ding; Xinyi Chen; Xinyi Qin; Wensong Wang; Xiang Liu; Xun Sun; Weiwei Lin; Shenjie Li; Yanyan Chen

doi:10.1021/acsaem.4c02775

journal article·2025-01-27

Defect Engineering Modulation of CdS-Based Nanorods to Promote the Visible Light Driven Photocatalytic Hydrogen Production

Yuye Cheng, Mengjie Yao, Kai Ding, Xinyi Chen, Xinyi Qin, Wensong Wang, Xiang Liu, Xun Sun, Weiwei Lin, Shenjie Li, Yanyan Chen

ACS Applied Energy Materials· Volume 8· Issue 2

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Source abstract

Abstract

Sulfide semiconductor materials are widely used in photocatalytic hydrogen production, and specifically, CdS-based photocatalysts have excellent photocatalytic performance. Here, the precursor of zinc cadmium diethyldithiocarbamate was synthesized using sodium diethyldithiocarbamate as a ligand, and then, ternary metal sulfide Zn–Cd–S nanorods were prepared by the solvothermal method using ethylenediamine as a solvent. The influence of the defect content on photocatalysis was investigated by adjusting the ratio of Zn and Cd. Surface defects can capture photogenerated holes, retain more photogenerated electrons, and serve as active centers for hydrogen evolution reactions. In addition, based on the first step, ZnS/Zn–Cd–S composite photocatalysts were synthesized by hydrothermal method. Due to the presence of Zn vacancies in ZnS, they can also be excited to generate photogenerated electrons under visible light conditions, forming a type-II heterojunction with Zn–Cd–S, promoting electron hole separation. The synergistic effect of heterojunction and surface defects greatly improves the photocatalytic performance of the catalyst, achieving high hydrogen resolution activity of 13.7 mmol·g –1 ·h –1 .

Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials Electronic materials Composites Catalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · Quantum Dots Synthesis And Properties · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, PR China

School of Carbon Neutrality Science and Engineering, Aust Hefei Institute for Advanced Research, Anhui University of Science and Technology, Hefei 231131, PR China

Anhui Laboratory of Clean Catalytic Engineering, Anhui Polytechnic University, Wuhu 241000, PR China

Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineerig, Hefei University of Technology, Hefei 230009, PR China

Anhui Province Engineering Research Center of Flexible and Intelligent Material, Hefei University of Technology, Hefei 230009, PR China

Funding

Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Natural Science Foundation of Anhui Province · Undergraduate Innovation and Entrepreneurship Training Program · Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology

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