4.6 Article

Synthesis and characterization of P-doped g-C3N4 nanosheet hybridized ZnS nanospheres with enhanced visible-light photocatalytic activity

期刊

JOURNAL OF SOLID STATE CHEMISTRY
卷 305, 期 -, 页码 -

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2021.122703

关键词

G-C3N4; ZnS; Phosphorus doping; Photocatalyst; Heterojunction; Tetracycline

资金

  1. National Natural Science Foundation of China [21773203]
  2. Qing Lan Project of Jiangsu Province
  3. Nantong Science and Technology Program, China [JC2020105, JC2020136, JC2021021]

向作者/读者索取更多资源

The Phosphorus-doped g-C3N4/ZnS composite photocatalyst was prepared by element doping and structuring a heterojunction, showing enhanced photocatalytic properties for degrading pharmaceutical wastewater with visible light irradiation. The design and synthesis of PCN/ZnS provide a new way for photodegrading pharmaceutical wastewater with improved photocatalytic performance.
Phosphorus-doped g-C3N4/ZnS (PCN/ZnS) composite photocatalyst was prepared by element doping and structuring heterojunction by solvothermal methods. The heterojunction composite was characterized by XRD, SEM/TEM, XPS and UV -vis DRS. The photocatalytic properties of PCN, ZnS and PCN/ZnS were studied by photodegradation of tetracycline (TC) with visible light irradiation. The 15%PCN/ZnS showed the highest photocatalytic degradation performance of TC with the reaction rate constant of 0.0529 min(-1), which was 40.7 times of ZnS and 6.3 times of PCN. Superoxide radicals and holes played a major role in the photocatalytic degradation process, but not hydroxyl radicals. Besides, according to the conduction and entrainment positions of PCN and ZnS, they form a type II heterojunction structure, which could extend the range of light response, enhance the charges transfer and efficient separation. In general, the design and synthesis of PCN/ZnS provide a new way to photodegrade pharmaceutical wastewater with enhanced photocatalytic properties.

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