光催化
四环素
异质结
材料科学
光化学
可见光谱
光降解
罗丹明B
降级(电信)
化学工程
盐酸四环素
光电子学
X射线光电子能谱
化学
催化作用
有机化学
电信
生物化学
抗生素
计算机科学
工程类
作者
Zhao Du,Li Feng,Zhonglu Guo,Tongqi Yan,Qi Hu,Jianming Lin,Yang Huang,Chengchun Tang,Yi Fang
标识
DOI:10.1016/j.jcis.2021.01.027
摘要
Herein, a series of ultrathin h-BN/Bi2MoO6 heterojunction with excellent photocatalytic activity has been firstly prepared via a feasible solvothermal method. Our results suggest that the optimized photocatalyst possesses a high degradation ratio of tetracycline (TC), oxytetracycline (OTC) and doxycycline (DC) up to 99.19%, 95.28% and 91.04% under visible-light irradiation, respectively. We highlight that the outstanding photocatalytic activity is mainly attributed to the prominent performance of tetracycline adsorption on h-BN and the dominant visible-light absorption by Bi2MoO6 as well as the effective photogenerated carrier separation induced by the synergetic effect between h-BN and Bi2MoO6. Moreover, DFT calculations reveal that the built-in electric field formed between h-BN and Bi2MoO6 gives rise to the separation of carriers and the polarization of tetracycline molecules. Last but not the least, the specific process and micro-mechanism of the photocatalytic tetracycline degradation under visible-light driven have also been illuminated. The present work pioneers the application of ultrathin h-BN/Bi2MoO6 heterojunction as a novel tetracycline degradation photocatalyst and further guides the design of more visible-light photocatalysts.
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