Influence of Zn/Co ratio and calcination temperature on the visible light-driven photoelectrocatalytic properties of ZnCoIn-LDOs for the reduction of Cr(VI)

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Advanced Composites and Hybrid Materials Pub Date : 2024-12-23 DOI:10.1007/s42114-024-01171-3

Junxiang Wang, Xindong Zhou, Xu Wang, Qingming He, Ruoyun Li, Penghui Li, Lin Guo, Haodong Duan, Hui Yang

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Abstract

A series of ZnCoIn-LDOs were successfully prepared by the calcination of ZnCoIn-LDH precursors under different Zn/Co ratios and temperatures. The composition, structure, and visible light response of the composites were systematically investigated. A photoelectric catalytic performance test showed that the optimal Zn/Co/In ratio and calcination temperature were 2:1:1 and 550 °C, respectively. After 100 min of photoelectrocatalytic reaction under simulated sunlight exposure, Cr(VI) conversion rate reached 100%. According to the characterization of ZnCoIn-LDOs, it was revealed that the composites had typical p-n heterojunction structure which was beneficial for the transfer and transmission of photogenerated electrons and suppressing the complexation of electron–hole pairs effectively. In addition, appropriate Zn/Co/In ratio and calcination temperature significantly reduced the forbidden band width of the composites and thus improved the electron leap and the photocatalytic performance on the reduction of Cr(VI). Finally, a possible mechanism for the reduction of Cr(VI) was proposed by free radical analysis. It can be concluded that ·H plays an important role in the catalytic reduction of Cr(VI) in solution. In summary, the present work provides a promising method for the preparation of efficient photocatalytic electrode using ZnCoIn-LDOs, which can be used in photoelectrocatalytic reduction field.

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.