FeOOH Quantum Dot-Coupled Z-Scheme BiVO4/g-C3N4 Heterojunction for Enhancing Photo-Fenton Reactions

被引：18
|
作者：
Liu, Rui [1 ]
Li, Ru [4 ]
Yang, Lei [2 ]
Wang, Rong-Xu [1 ]
Chen, Han-Yang [1 ]
Wang, Nan [1 ]
Li, Zhi [1 ]
Chen, You-Qiang [1 ]
Ramakrishna, Seeram [3 ]
Long, Yun-Ze [1 ,5 ]
机构：
[1] Qingdao Univ, Coll Phys, Collaborat Innovat Ctr Nanomat & Devices, Qingdao 266071, Peoples R China
[2] Qingdao Univ, Coll Text & Clothing, Res Ctr Intelligent & Wearable Technol, Qingdao 266071, Peoples R China
[3] Natl Univ Singapore, Fac Engn, Ctr Nanofibers & Nanotechnol, Singapore 119007, Singapore
[4] Qingdao Univ, Instrumental Anal Ctr, Qingdao 266071, Peoples R China
[5] Qingdao Univ, State Key Lab Biofibers & Ecotext, Qingdao 266071, Peoples R China
来源：
ACS APPLIED NANO MATERIALS | 2023年 / 6卷 / 18期
基金：
中国国家自然科学基金;
关键词：
FeOOH; Z-scheme; photo-Fenton; tetracycline; visible light; PHOTOCATALYTIC DEGRADATION; RHODAMINE-B; GRAPHENE;
D O I：
10.1021/acsanm.3c03138
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Herein, FeOOH quantum dots and a Z-scheme BiVO4/g-C3N4 catalyst were coupled to obtain a Z-scheme heterojunction for photo-Fenton reactions to facilitate the transport of electrons and the generation of radicals. The obtained materials exhibited better visible light-driven photo-Fenton degradation of Rhodamine B, which is 22.06 times as high as pure BiVO4, 18.65 times as high as pure g-C3N4, and 3.44 times as high as BiVO4/g-C3N4, showing great potential in photo-Fenton degradation of pollutants. Moreover, the performance tests, radical capture experiments, and time-resolved fluorescence spectroscopy revealed that electron migration exists between the BiVO4/g-C3N4 and FeOOH-QDs. This composite system accelerates the cycling of Fe3+/Fe2+ during the photo-Fenton process, thus continuously generating reactive species (hydroxyl radicals (-OH) and superoxide radicals (-O-2-)), leading to the rapid degradation of organic pollutants. KEYWORDS: FeOOH, Z-scheme, photo-Fenton, tetracycline, visible light
引用
收藏
页码：17009 / 17020
页数：12
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