期刊
NANOSCIENCE AND NANOTECHNOLOGY LETTERS
卷 11, 期 8, 页码 1093-1103出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/nnl.2019.2996
关键词
Photocatalysis; g-C3N4; Bi2O2CO3; Layered Heterostructure Photocatalyst; Antibiotic Degradation
资金
- Province Natural Science Foundation of Zhejiang [LY19E020006, LY18F060005, LY18E020007, LQ18E030005]
Photocatalysis is a green and effective way to degrade antibiotic remnants, one of the main persistent and ecotoxic sources for aquatic environment pollution. Developing highly efficient photocatalysts is a key issue for large-scale application of this technique. In this work, we showed that layered heterostructure photocatalyst composed of defective g-C3N4 by RbCl-assisted thermal polymerization of melamine (RbCN)/Bi2O2CO3 (BOC) appeared as a promising candidate for photocatalytic degradation of antibiotic pollutants. The as-prepared RbCN/BOC heterostructure photocatalyst exhibited better photocatalytic activity than bare BOC, and can degrade 84% of tetracycline hydrochloride within 60 min under illumination. The observed improvement is ascribed to enhanced transfer and restrained recombination of free electron-hole pairs generated under light irradiation as a result of staggered band alignment of RbCN/BOC, extended optical response region, large interface area and possibly more reactive sites associated with RbCl-assisted in-plane structural modification of g-C3N4.
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