光催化
材料科学
罗丹明B
乙二醇
化学工程
溶剂热合成
亚甲蓝
降级(电信)
催化作用
纳米技术
化学
有机化学
计算机科学
电信
工程类
作者
Yunlong Chen,Gang Liu,Limin Dong,Xinmei Liu,Miaomiao Liu,Xiaoyi Wang,Chunpeng Gao,Guanxiang Wang,Zhengchun Teng,Wenlong Yang,Yong Dai
标识
DOI:10.1016/j.jallcom.2022.167331
摘要
The photocatalytic performance of the catalysts are highly dependent on their morphology and the separation efficiency of photo-generated carriers. In this work, the self-assembled BiOCl microflowers with oxygen vacancies (OVs) were synthesized by facile microwave-assisted solvothermal method. The ethylene glycol was applied as solvent, reductant and soft templates of microflowers. As the preparation temperature increased from 100 ℃ to 160 ℃, the morphology of BiOCl was transformed from microflowers to nanosheets, and the concentration of OVs increased gradually. The photocatalytic performance of BiOCl was evaluated by photocatalytic degradation of Rhodamine B (RhB), Methylene blue (MB) and Ciprofloxacin (CIP) under visible light irradiation. It is indicated that the excessive OVs would inhibit the separation and migration of photo-generated carriers. Benefiting from the optimum OVs concentration and enhanced specific surface area, the BiOCl-100 microflowers exhibited a superior photocatalytic performance. The degradation constants for RhB, MB and CIP by BiOCl-100 were estimated to be 0.512, 0.022 and 0.022 min−1, which were 4.3, 1.7 and 5.5 folds higher than BiOCl-100-w nanosheets (with no OVs), respectively. This work demonstrated the superior photocatalytic performance of BiOCl microflowers with optimum OVs, which could be also applied to design of other highly efficient photocatalysts.
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