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Photoinduced synthesis of green photocatalyst Fe3O4/BiOBr/CQDs derived from corncob biomass for carbamazepine degradation: The role of selectively more CQDs decoration and Z-scheme structure
Xie, Xiaoyun; Li, Shan; Qi, Kemin; Wang, Zhaowei
2021-09-15
Source PublicationChemical Engineering Journal
ISSN13858947
Volume420
AbstractSeeking green, highly efficient and recyclable photocatalysts for emerging pollutants removal is urgent and desirable in water treatment area. In this work, novel and environmental-friendly photocatalyst Fe3O4/BiOBr/CQDs decorated by corncob biomass carbon quantum dots (CQDs) was fabricated successfully via photoinduced method for the first time. More CQDs as electrons reservoir were deposited on the (1 1 0) facet of BiOBr by photoinduced strategy compared to common hydrolysis method through morphology observation. Besides, enhanced visible light absorption and photogenerated charge transfer efficiency make Fe3O4/BiOBr/CQDs perform best photocatalytic activity towards carbamazepine (CBZ, 10 mg/L) removal, where 99.52% CBZ could be eliminated within 120 min light irradiation. Moreover, ·O2–, h+ and ·OH dominated the photodegradation process and three detailed degradation pathways depicted the transformation behavior of CBZ, which were mainly attributed to Z-scheme structure construction caused by electronic bridging and up-conversion photoluminescence of biomass CQDs. A series of photoelectrochemical tests verified the existence of CQDs and Fe3O4 solved the high charge recombination rate and low electron utilization problems of BiOBr indeed. Combined with the rational utilization of corncob waste biomass, this research indicates green photocatalyst Fe3O4/BiOBr/CQDs synthesized by photoinduced method will have wide potential in water pollutant treatment in the future. © 2021 Elsevier B.V.
KeywordCarbamazepine Carbon quantum dots Emerging pollutants Fe$-3$/O$-4$ Fe3O4/BiOBr/carbon quantum dot Photo-induced Photoinduced method Photoinduction Pollutants removal Recyclables Carbamazepine Carbon quantum dots Emerging pollutants Fe$-3$/O$-4$ Fe3O4/BiOBr/carbon quantum dot Photo-induced Photoinduced method Photoinduction Pollutants removal Recyclables
PublisherElsevier B.V.
DOI10.1016/j.cej.2021.129705
Indexed ByEI
Language英语
EI Accession Number20211610236039
EI KeywordsBismuth compounds
EI Classification Number441.2 Reservoirs ; 452.4 Industrial Wastes Treatment and Disposal ; 453 Water Pollution ; 714.2 Semiconductor Devices and Integrated Circuits ; 741.1 Light/Optics ; 801.4 Physical Chemistry ; 802.2 Chemical Reactions ; 803 Chemical Agents and Basic Industrial Chemicals ; 804.1 Organic Compounds
Original Document TypeJournal article (JA)
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lzu.edu.cn/handle/262010/451270
Collection兰州大学
AffiliationKey Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou; 730000, China
First Author AffilicationLanzhou University
Recommended Citation
GB/T 7714
Xie, Xiaoyun,Li, Shan,Qi, Kemin,et al. Photoinduced synthesis of green photocatalyst Fe3O4/BiOBr/CQDs derived from corncob biomass for carbamazepine degradation: The role of selectively more CQDs decoration and Z-scheme structure[J]. Chemical Engineering Journal,2021,420.
APA Xie, Xiaoyun,Li, Shan,Qi, Kemin,&Wang, Zhaowei.(2021).Photoinduced synthesis of green photocatalyst Fe3O4/BiOBr/CQDs derived from corncob biomass for carbamazepine degradation: The role of selectively more CQDs decoration and Z-scheme structure.Chemical Engineering Journal,420.
MLA Xie, Xiaoyun,et al."Photoinduced synthesis of green photocatalyst Fe3O4/BiOBr/CQDs derived from corncob biomass for carbamazepine degradation: The role of selectively more CQDs decoration and Z-scheme structure".Chemical Engineering Journal 420(2021).
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