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A novel ternary Z-scheme g-C3N4/CQDs/FeVO4 heterojunction for photodegradation of levofloxacin via peroxymonosulfate activation

2025Journal article Open access
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datacite.subject.fosEngenharia e Tecnologia
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorLi, Yunuo
dc.contributor.authorHan, Pengda
dc.contributor.authorZhang, Dongzhe
dc.contributor.authorZhang, Wenzhi
dc.contributor.authorChai, Dong-feng
dc.contributor.authorMeng, Lijian
dc.contributor.authorMeng, Lijian
dc.contributor.authorLiming, Bai
dc.contributor.authorZhao, Ming
dc.contributor.authorDong, Guohua
dc.date.accessioned2025-09-10T14:32:28Z
dc.date.available2025-09-10T14:32:28Z
dc.date.issued2025
dc.description.abstractCurrently, it is still a significant challenge for photodegradation of the emerging pollutants using g-C3N4 (CN) due to their interior visible light responsibility and rapid recombination of e-/h+. Herein, a novel Z-scheme g-C3N4/CQDs/FeVO4 (CCF) photocatalyst was synthesized by initially preparing hollow tubular g-C3N4/CQDs (CC) and then anchoring FeVO4 on CC. The morphology, structural composition and photoelectrochemical performance of the CCF were investigated by comprehensive characterization such as FT-IR, XPS, XRD, SEM and photoelectrochemical performance tests. The CCF shows superior photodegradation capability toward LFX via activation of peroxymonosulfate (PMS), resulting in a photodegradation efficiency ∼ 97.3 % in the optimal conditions. Apart from the strengthened light responsibility, improved BET specific surface area and porous texture of CCF, the improved photodegradation properties can be ascribed to the formed Z-scheme heterojunction between CC and FeVO4, which can ameliorate the separation efficiency of e-/h+ and accelerate their transfer rate. The addition of CQDs can also serve as a channel for promoting the rapid transfer of photogenerated e-/h+. The photodegradation processes of LFX including generation of reactive oxygen species (ROS) and removal pathways were systematically explored by using radical capturing assays, electron spin resonance (ESR) tests and liquid chromatography-mass spectrometry (LC-MS) techniques. To sum up, this study provides an innovative method for regulating the photocatalytic activity of g-C3N4 via constructing Z-scheme heterostructures and incorporating CQD to degrade emerging contaminants.eng
dc.description.sponsorshipThis work was supported by the National Natural Science Foundation of China (Grant No. 32272823), the Heilongjiang Provincial Natural Science Foundation of China (Grant No. PL2024C037), and the Research Foundation of Education Bureau of Heilongjiang Province of China (Grant No. 145309609). We also thank eceshi Lab (https://www.eceshi.com/) for the ESR analysis.
dc.identifier.citationYunuo Li, Pengda Han, Dongzhe Zhang, Wenzhi Zhang, Dong-feng Chai, Lijian Meng, Liming Bai, Ming Zhao, Guohua Dong, A novel ternary Z-scheme g-C3N4/CQDs/FeVO4 heterojunction for photodegradation of levofloxacin via peroxymonosulfate activation, Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume 727, Part 1, 2025, 138141, ISSN 0927-7757, https://doi.org/10.1016/j.colsurfa.2025.138141.
dc.identifier.doihttps://doi.org/10.1016/j.colsurfa.2025.138141
dc.identifier.issn0927-7757
dc.identifier.urihttp://hdl.handle.net/10400.22/30451
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relation.hasversionhttps://www.sciencedirect.com/science/article/pii/S0927775725020448
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectG-C3N4/CQDs/FeVO4
dc.subjectZ-scheme heterojunction
dc.subjectPeroxymonosulfate
dc.subjectLevofloxacin
dc.subjectPhotodegradation
dc.titleA novel ternary Z-scheme g-C3N4/CQDs/FeVO4 heterojunction for photodegradation of levofloxacin via peroxymonosulfate activationeng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleColloids and Surfaces A: Physicochemical and Engineering Aspects
oaire.citation.volume727
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameMeng
person.givenNameLijian
person.identifier236430
person.identifier.ciencia-idC31B-0091-BD12
person.identifier.orcid0000-0001-6071-3502
person.identifier.scopus-author-id7202236050
relation.isAuthorOfPublicationcb02ae05-0786-47ff-b480-2fde7ef93e0d
relation.isAuthorOfPublication.latestForDiscoverycb02ae05-0786-47ff-b480-2fde7ef93e0d

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