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Induced abundant oxygen vacancies in Sc(2)VO(5−δ)/g-C(3)N(4) heterojunctions for enhanced photocatalytic degradation of levofloxacin

Sc(2)VO(5−δ)/g-C(3)N(4) heterojunctions (SVCs) with abundant oxygen vacancies (OVs) were synthesized by ultrasonic exfoliation combined with the thermal etching method. The structures, OVs and spatial separation of the photogenerated carriers were systematically characterized. The results manifested...

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Autores principales: Feng, Jian, Zu, Liyao, Yang, Hongrong, Zheng, Yuanyuan, Chen, Ziying, Song, Wei, Zhao, Ran, Wang, Li, Ran, Xia, Xiao, Bo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9782857/
https://www.ncbi.nlm.nih.gov/pubmed/36605657
http://dx.doi.org/10.1039/d2ra07484b
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author Feng, Jian
Zu, Liyao
Yang, Hongrong
Zheng, Yuanyuan
Chen, Ziying
Song, Wei
Zhao, Ran
Wang, Li
Ran, Xia
Xiao, Bo
author_facet Feng, Jian
Zu, Liyao
Yang, Hongrong
Zheng, Yuanyuan
Chen, Ziying
Song, Wei
Zhao, Ran
Wang, Li
Ran, Xia
Xiao, Bo
author_sort Feng, Jian
collection PubMed
description Sc(2)VO(5−δ)/g-C(3)N(4) heterojunctions (SVCs) with abundant oxygen vacancies (OVs) were synthesized by ultrasonic exfoliation combined with the thermal etching method. The structures, OVs and spatial separation of the photogenerated carriers were systematically characterized. The results manifested that the SVCs were successfully constructed via the strong interaction between g-C(3)N(4) (CN) and Sc(2)VO(5−δ) (SV). The SVCs possessed a higher concentration of OVs than that of pristine CN and SV. The formation of the SVC heterostructures and the optimization of the OVs were the two major factors to accelerate the separation of the charge carriers and finally to improve the photocatalysis performance. The as-prepared 10%SVC (containing 10 wt% of SV) catalyst exhibited the highest OV concentration and the best photocatalytic performance. The levofloxacin (LVX) photodegradation activity showed a positive correlation with the OV concentration. The photocatalytic degradation efficiencies were 89.1, 98.8 and 99.0% on 10%SVC for LVX, methylene blue (MB) and rhodamine B (RhB), respectively. These photodegradation processes followed the pseudo first order kinetic equation. The apparent rate constant (k(app)) of LVX degradation on 10%SVC was 11.0 and 7.5 times that of CN and SV. The h(+), ˙OH and ˙O(2)(−) were the major reactive species in the photodegradation process.
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spelling pubmed-97828572023-01-04 Induced abundant oxygen vacancies in Sc(2)VO(5−δ)/g-C(3)N(4) heterojunctions for enhanced photocatalytic degradation of levofloxacin Feng, Jian Zu, Liyao Yang, Hongrong Zheng, Yuanyuan Chen, Ziying Song, Wei Zhao, Ran Wang, Li Ran, Xia Xiao, Bo RSC Adv Chemistry Sc(2)VO(5−δ)/g-C(3)N(4) heterojunctions (SVCs) with abundant oxygen vacancies (OVs) were synthesized by ultrasonic exfoliation combined with the thermal etching method. The structures, OVs and spatial separation of the photogenerated carriers were systematically characterized. The results manifested that the SVCs were successfully constructed via the strong interaction between g-C(3)N(4) (CN) and Sc(2)VO(5−δ) (SV). The SVCs possessed a higher concentration of OVs than that of pristine CN and SV. The formation of the SVC heterostructures and the optimization of the OVs were the two major factors to accelerate the separation of the charge carriers and finally to improve the photocatalysis performance. The as-prepared 10%SVC (containing 10 wt% of SV) catalyst exhibited the highest OV concentration and the best photocatalytic performance. The levofloxacin (LVX) photodegradation activity showed a positive correlation with the OV concentration. The photocatalytic degradation efficiencies were 89.1, 98.8 and 99.0% on 10%SVC for LVX, methylene blue (MB) and rhodamine B (RhB), respectively. These photodegradation processes followed the pseudo first order kinetic equation. The apparent rate constant (k(app)) of LVX degradation on 10%SVC was 11.0 and 7.5 times that of CN and SV. The h(+), ˙OH and ˙O(2)(−) were the major reactive species in the photodegradation process. The Royal Society of Chemistry 2022-12-23 /pmc/articles/PMC9782857/ /pubmed/36605657 http://dx.doi.org/10.1039/d2ra07484b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Feng, Jian
Zu, Liyao
Yang, Hongrong
Zheng, Yuanyuan
Chen, Ziying
Song, Wei
Zhao, Ran
Wang, Li
Ran, Xia
Xiao, Bo
Induced abundant oxygen vacancies in Sc(2)VO(5−δ)/g-C(3)N(4) heterojunctions for enhanced photocatalytic degradation of levofloxacin
title Induced abundant oxygen vacancies in Sc(2)VO(5−δ)/g-C(3)N(4) heterojunctions for enhanced photocatalytic degradation of levofloxacin
title_full Induced abundant oxygen vacancies in Sc(2)VO(5−δ)/g-C(3)N(4) heterojunctions for enhanced photocatalytic degradation of levofloxacin
title_fullStr Induced abundant oxygen vacancies in Sc(2)VO(5−δ)/g-C(3)N(4) heterojunctions for enhanced photocatalytic degradation of levofloxacin
title_full_unstemmed Induced abundant oxygen vacancies in Sc(2)VO(5−δ)/g-C(3)N(4) heterojunctions for enhanced photocatalytic degradation of levofloxacin
title_short Induced abundant oxygen vacancies in Sc(2)VO(5−δ)/g-C(3)N(4) heterojunctions for enhanced photocatalytic degradation of levofloxacin
title_sort induced abundant oxygen vacancies in sc(2)vo(5−δ)/g-c(3)n(4) heterojunctions for enhanced photocatalytic degradation of levofloxacin
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9782857/
https://www.ncbi.nlm.nih.gov/pubmed/36605657
http://dx.doi.org/10.1039/d2ra07484b
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