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S-scheme N-doped carbon dots anchored g-C3N4/Fe2O3 shell/core composite for photoelectrocatalytic trimethoprim degradation and water splitting

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carlosiii.embargo.liftdate2025-01
carlosiii.embargo.terms2025-01
dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Materiales compuestos poliméricos e interfaseses
dc.contributor.authorDang, Van Dien
dc.contributor.authorAnnadurai, Thamilselvan
dc.contributor.authorKhedulkar, Akhil Pradiprao
dc.contributor.authorLin, Jui-Yen
dc.contributor.authorAdorna, Joemer
dc.contributor.authorYu, Wan Ju
dc.contributor.authorPandit, Bidhan
dc.contributor.authorHuynh, Trung Viet
dc.contributor.authorDoong, Ruey-An
dc.date.accessioned2023-11-22T11:26:59Z
dc.date.issued2023-01-01
dc.description.abstractPhotoelectrocatalysis is a promising technique for energy conversion and environmental treatment. This study describes the photoelectrochemical (PEC) degradation of trimethoprim and hydrogen evolution using a photoanode prepared by N-doped carbon dots (NCD) incorporated g-C3N4/α-Fe2O3 (CNFO) shell/core nanocomposite. The electrochemical analysis reveals that the photocurrent density of NCD@CNFO photoanode reached 3.07 mA cm−2 at 1.6 V vs. NHE, which is 4 and 15 times greater than that of CNFO and intact α-Fe2O3, respectively. In the presence of peroxymonosulfate (PMS), the NCD@CNFO photoanode enabled 95 % and 90 % of trimethoprim (TMP) degradation in aqueous solution and lake water, respectively. Hydrogen generation coupled with TMP degradation was also observed in the PEC system, where the H2 generation rate was 550 µmol cm−2 h−1. Both superoxide (•O2−) and hydroxyl (•OH) radicals played a significant role in the degradation of TMP. The achievements could be assigned to the excellent photoabsorption and electron transfer properties of NCD, which enhanced the PEC activity of CNFO by enabling the S-scheme heterojunction to reduce electron-hole recombination. Moreover, PMS served as a cathodic electron acceptor to improve the catalytic properties of NCD@CNFO photoanode, demonstrating its contribution to both water treatment and hydrogen production. Such superior efficiency offers great potential to develop a PEC system using carbon dots/semiconductor hybrid catalysts for antibiotic degradation and synchronous photocatalytic H2 evolution from wastewater, providing an alternative solution to environmental pollution and energy crisis issues.en
dc.description.sponsorshipThe authors thank the National Science and Technology Council (NSTC), Taiwan, for financial support under grant No 111-2223-E-007-008.en
dc.description.statusPublicadoes
dc.format.extent15
dc.identifier.bibliographicCitationApplied Catalysis B: Environmental, (2023), v. 320:121928, (15 p.)en
dc.identifier.doihttps://doi.org/10.1016/j.apcatb.2022.121928
dc.identifier.issn0926-3373
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue121928
dc.identifier.publicationlastpage15
dc.identifier.publicationtitleAPPLIED CATALYSIS B-ENVIRONMENTALen
dc.identifier.publicationvolume320
dc.identifier.urihttps://hdl.handle.net/10016/38933
dc.identifier.uxxiAR/0000032504
dc.language.isoengen
dc.publisherElsevieren
dc.rights© 2022 Elsevier B.V. All rights reserved.en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsembargoed accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaMaterialeses
dc.subject.otherPhotoelectrochemical degradationen
dc.subject.otherTrimethoprimen
dc.subject.otherHydrogen productionen
dc.subject.otherCarbon dots S-schemeen
dc.titleS-scheme N-doped carbon dots anchored g-C3N4/Fe2O3 shell/core composite for photoelectrocatalytic trimethoprim degradation and water splittingen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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