期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 10, 期 48, 页码 18164-18173出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2tc03943e
关键词
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资金
- National Natural Science Foundation of China [52172206, 21871078]
- Heilongjiang Province Natural Science Foundation of China [JQ2019B001]
- Shandong Province Natural Science Foundation [ZR2021MB016]
- Heilongjiang Provincial Institutions of Higher Learning Basic Research Funds Basic Research Projects [2021-KYYWF-0007]
- Heilongjiang Postdoctoral Startup Fund [LBH-Q14135]
- Heilongjiang University Science Fund for Distinguished Young Scholars [JCL201802]
- Innovative Science Research Project of Heilongjiang University [YJSCX2022-214HLJU]
- Development Plan of Youth Innovation Team in Colleges and Universities of Shandong Province
In this study, hollow cubic CdS@CoS/WS2 dual S-scheme heterojunction superstructure photocatalysts were successfully fabricated, which showed excellent photocatalytic performance and photothermal effect. The photocatalysts had a broad light absorption range and abundant surface-active sites, enabling efficient degradation of organic pollutants and hydrogen production. This study provides a new avenue for constructing high-performance hollow superstructure photocatalysts.
A hollow polyhedral structure can effectively capture light and facilitate carrier separation, thus enhancing photocatalytic performance. Herein, hollow cubic CdS@CoS/WS2 dual S-scheme heterojunction superstructure photocatalysts are fabricated using a simple sulfidation and hydrothermal method. CdS@CoS/WS2 with a band gap of 1.59 eV and a relatively narrow band gap broadens the photoreaction to the near-infrared region and shows a good photothermal effect, which can promote photocatalytic reactions. It shows a relative specific surface area of 91.58 m(2) g(-1), which provides abundant surface-active sites to enhance the photocatalytic reaction. Under light conditions, the photocatalytic degradation ratios of CdS@CoS/WS2 for tetracycline and bisphenol A are up to 98.9 and 99.1%, and the hydrogen evolution efficiency is also up to 10.62 mmol h(-1) g(-1). The enhanced photothermal-photocatalytic performance could be due to the formation of a dual S-scheme heterojunction superstructure that facilitates space charge separation, a narrow band gap and a mesoporous hollow structure promoting solar light utilization, providing abundant surface-active sites and enhanced mass transfer. This simple strategy provides a new idea for the construction of high-performance hollow superstructure photocatalysts.
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