期刊
CHEMISTRYSELECT
卷 4, 期 46, 页码 13716-13723出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201903944
关键词
Photocatalysis; Heterojunctions; Z-scheme; Antibiotics; Photocatalytic activity
资金
- National Natural Science Foundation of China [U1809216]
- Foundation of Science and Technology Department of Zhejiang Province [2017 C33078]
Photocatalytic g-C3N4/Bi2WO6 nanocomposites were synthesized by solvothermal method and grind-calcination method, and then the phases, microstructure, components and photodegradation to ciprofloxacin (CIP) were studied in detail. The surface area of g-C3N4/Bi2WO6 nanocomposites decreases with the increasing g-C3N4 content. Bi2WO6 nanoparticles prepared with solvothermal method present the smaller grain size and the higher effective interface with the similar components. The photocatalytic activity of g-C3N4/Bi2WO6 nanocomposites is higher than those of pristine g-C3N4 nanosheets and Bi2WO6 nanoparticles, which the optimized CIP removal percent reaches about 98% in 120 min under visible light irradiation. The Z-scheme g-C3N4/Bi2WO6 heterojunctions facilitate the effective separation and accumulation of photogenerated electrons at conduction band of g-C3N4 and holes at valence band of Bi2WO6, resulting in hydroxyl and superoxide radicals for the redox of CIP. S-CN-40presents the highest CIP removal percent due to the effective heterogeneous interface and C-CN-20 possesses the good application prospects in practice for the simple preparation process.
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