BiOBr with oxygen vacancies capture 0D black phosphorus quantum dots for high efficient photocatalytic ofloxacin degradation

被引：49

作者：

Li, Xibao ^{[1
,2
]}

Kang, Bangbang ^{[1
]}

Dong, Fan ^{[3
]}

Deng, Fang

Han, Lu ^{[4
]}

Gao, Xiaoming ^{[5
]}

Xu, Jilin ^{[1
]}

Hou, Xifeng ^{[6
]}

Feng, Zhijun ^{[1
]}

Chen, Zhi ^{[1
]}

Liu, Lingling ^{[2
]}

Huang, Juntong ^{[1
]}

机构：

[1] Nanchang Hangkong Univ, Sch Mat Sci & Engn, Nanchang 330063, Jiangxi, Peoples R China

[2] Nanchang Hangkong Univ, Key Lab Jiangxi Prov Persistent Pollutants Contro, Nanchang 330063, Jiangxi, Peoples R China

[3] Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 611731, Peoples R China

[4] Univ Sci & Technol Liaoning, Sch Met & Mat, Anshan 114051, Peoples R China

[5] Yanan Univ, Dept Chem & Chem Engn, Shaanxi Key Lab Chem React Engn, Yanan 716000, Peoples R China

[6] TongLing Boya Duye New Mat Technol Co Ltd, TongLing 244000, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2022年 / 593卷

关键词：

S-scheme heterojunction; Photocatalysis; Oxygen vacancy; Interface control; SCHEME HETEROJUNCTION; H-2; EVOLUTION; ACTIVE-SITES; PERFORMANCE; MECHANISM; COMPOSITES; GRAPHENE; METAL; FIELD; DYE;

D O I：

10.1016/j.apsusc.2022.153422

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：

A novel BPQDs/OV-BiOBr S-scheme heterojunction photocatalyst with tight interfacial contacts was successfully prepared by hydrothermal deposition of appropriate amount of black phosphorus quantum dots (BPQDs) on bismuth bromoxide with oxygen vacancies (OV-BiOBr). The BPQDs/OV-BiOBr S-scheme heterojunction photocatalysts exhibited excellent degradation activity for ofloxacin (OFLO) under visible light irradiation. The special oxytropism of oxygen vacancies (OVs) on OV-BiOBr was cleverly used to build an oxygen-deficient environment for BPQDs, which significantly enhanced the intimate contact of heterojunction interface and the stability of BPQDs. Meanwhile, the local surface plasmon resonance effect generated by the precipitation of Bi metal on OV-BiOBr significantly improved its photoresponsiveness. The direction of the internal electric field and the special electron transfer mechanism of the S-scheme heterojunction were analyzed in detail by the combination of density functional theory calculation and experiment. This work provides new insights and ideas for the study of OVs regulation of the S-scheme heterojunction.

引用

页数：11

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