期刊
CATALYSIS COMMUNICATIONS
卷 149, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.catcom.2020.106200
关键词
G-C3N4; Bi4O5I2; Heterojunction; Photocatalytic degradation; Eutrophic water
资金
- National Natural Science Foundation of China [21477050, 21607017]
- Postgraduate Practice Innovation Project of Jiangsu Province [SJCX18 0962, SJCX18 0963]
- International Scientific and Technological Cooperation in Changzhou [CZ20140017]
Heterojunction photocatalysts of g-C3N4/Bi4O5I2 were synthesized using the solvothermal method, with the 3 wt% g-C3N4/Bi4O5I2 catalyst showing the highest photocatalytic activity in eutrophic water. The degradation efficiency of pollutants was attributed to the transfer and separation of electrons and holes between g-C3N4 and Bi4O5I2.
Heterojunction photocatalysts of g-C3N4/Bi4O5I2 were designed through the solvothermal method. A series of characterizations were used to analyze the structure, morphology, and optical and electronic characteristics of g-C3N4/Bi4O5I2 composite. Bi4O5I2 was successfully dispersed on the surface of g-C3N4. The 3 wt%-g-C3N4/Bi4O5I2 catalyst had the highest photocatalytic activity in eutrophic water. The degradation efficiency of chemical oxygen demand (CODMn), total nitrogen (TN), and chlorophyll a (Chl-a) was as high as 90.1%, 60.2%, and 66.1%, respectively. Based on the band structure analysis, the purification can be attributed to the transfer and separation of holes (h(+)) and electrons (e(-)) between g-C3N4 and Bi4O I-5(2).
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