期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 285, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2022.126137
关键词
Hollow heterostructures; Core-shell; g-C3N4; ZnIn2S4; Photocatalytic
资金
- National Natural Science Foundation of China [21906072, 22006057]
- Natural Science Foundation of Jiangsu Province [BK20190982]
- Henan Postdoctoral Foundation [202003013]
- Doctor of Mass entrepreneurship and innovation Project in Jiangsu Province and Postgraduate Research & Practice Innovation Program of Jiangsu Province (China) [KYCX21_3496]
This study demonstrates the rational design and construction of hierarchical hollow core-shell heterostructures for enhanced photocatalytic performance. The optimized photocatalyst showed outstanding degradation rate of tetracycline under visible light irradiation, as well as excellent cyclical stability.
Hierarchical hollow heterostructures with ultrathin two-dimensional (2D) nanosheet subunits have various intrinsic advantages in photocatalytic aspects such as increasing light collection, accelerating electron hole separation and migration, and promoting surface redox reactions. Herein, we demonstrated the rational design and construction of hierarchical hollow core-shell g-C3N4@ZnIn2S4 heterostructures with coating the ZnIn2S4 nanosheets on the hollow g-C3N4 spheres by a low temperature solvothermal route. The hollow g-C3N4@ZnIn2S4 spherical nanoflower realized the improvement of photocatalytic activity by multiple scattering and reflection of light in the spherical cavity. Furthermore, the photo-generated charge carriers can be effectively separated by constructing layered heterojunctions. The optimized g-C3N4@ZnIn2S4 exhibited the outstanding photocatalytic performance (nearly 84% degradation of tetracycline within 60 min visible light irradiation) as well as excellent cyclical stability. In addition, the total organic carbon removal (TOC) rate of the optimal g-C3N4@ZnIn2S4 composite photocatalyst can be reached up to 64%. Meanwhile, the possible degradation intermediates and degradation paths were analyzed by liquid chromatograph-mass spectrometer (LC-MS) test results. This work provides a feasible design idea of constructing the core-shell hierarchical hollow heterostructure photocatalyst with high photocatalytic performance.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据