Ultrathin h-BN/Bi2MoO6 heterojunction with synergetic effect for visible-light photocatalytic tetracycline degradation

被引：143

作者：

Du, Zhao ^{[1
,2
]}

Feng, Lang ^{[1
,2
]}

Guo, Zhonglu ^{[1
,2
]}

Yan, Tongqi ^{[1
,2
]}

Hu, Qi ^{[1
,2
]}

Lin, Jing ^{[1
,2
]}

Huang, Yang ^{[1
,2
]}

Tang, Chengchun ^{[1
,2
]}

Fang, Yi ^{[1
,2
]}

机构：

[1] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China

[2] Hebei Univ Technol, Hebei Key Lab Boron Nitride Micro & Nano Mat, Tianjin 300130, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2021年 / 589卷

基金：

中国国家自然科学基金;

关键词：

Ultrathin h-BN/Bi2MoO6 heterojunction; Visible-light photocatalyst; Synergetic effect; Tetracycline degradation mechanism; DFT calculations; Z-SCHEME PHOTOCATALYST; EFFICIENT PHOTOCATALYST; NANOSHEETS; PERFORMANCE; FABRICATION; HETEROSTRUCTURES; ANTIBIOTICS; CATALYST; CRYSTAL; BN;

D O I：

10.1016/j.jcis.2021.01.027

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

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. (C) 2021 Elsevier Inc. All rights reserved.

引用

页码：545 / 555

页数：11

共 48 条

[1] PROJECTOR AUGMENTED-WAVE METHOD [J].