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Article: The enhanced photocatalytic properties of MnO2/g-C3N4 heterostructure for rapid sterilization under visible light

TitleThe enhanced photocatalytic properties of MnO2/g-C3N4 heterostructure for rapid sterilization under visible light
Authors
KeywordsPhotocatalytic
Disinfection
MnO2 nanosheet
g-C3N4
Heterostructure
Issue Date2019
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhazmat
Citation
Journal of Hazardous Materials, 2019, v. 377, p. 227-236 How to Cite?
AbstractHerein, a heterostructure based on MnO2 and g-C3N4 was constructed on the surface of metallic Ti implants, in which MnO2 favored the transfer and separation of free charges to enhance the photoconversion efficiency of g-C3N4 by 21.11%. Consequently, the yield of ROS was promoted significantly, which denatured protein and damaged DNA to kill bacteria efficiently. In addition, glutathione (GSH, l-γ-glutamyl-l-cysteinyl-glycine) defending oxidative stress in bacteria, was oxidized by MnO2 in the hybrid coating once the bacterial membrane was disrupted by ROS. Hence, after visible light irradiation for 20 min, MnO2/g-C3N4 coating exhibited superior disinfection efficacy of 99.96% and 99.26% against S. aureus and E. coli severally. This work provided a practical sterilization strategy about MnO2/g-C3N4 systems through the synergistic effects of enhanced photodynamic antibacterial therapy and oxidization effect of MnO2 with great biosafety, in which MnO2 enhanced the photocatalyst property of g-C3N4 to generate more ROS and deplete GSH to improve antibacterial efficiency. It will bring more insight into rapid and highly effective disinfection and antibacterial strategy without using traditional high-temperature, ultraviolet ray and antibiotics that cause side-effects.
Persistent Identifierhttp://hdl.handle.net/10722/289801
ISSN
2020 Impact Factor: 10.588
2015 SCImago Journal Rankings: 1.692
ISI Accession Number ID
Errata

 

DC FieldValueLanguage
dc.contributor.authorWU, B-
dc.contributor.authorLI, Y-
dc.contributor.authorSU, K-
dc.contributor.authorTAN, L-
dc.contributor.authorLIU, X-
dc.contributor.authorCUI, Z-
dc.contributor.authorYANG, X-
dc.contributor.authorLIANG, Y-
dc.contributor.authorLI, Z-
dc.contributor.authorZHU, S-
dc.contributor.authorYeung, KWK-
dc.contributor.authorWU, S-
dc.date.accessioned2020-10-22T08:17:40Z-
dc.date.available2020-10-22T08:17:40Z-
dc.date.issued2019-
dc.identifier.citationJournal of Hazardous Materials, 2019, v. 377, p. 227-236-
dc.identifier.issn0304-3894-
dc.identifier.urihttp://hdl.handle.net/10722/289801-
dc.description.abstractHerein, a heterostructure based on MnO2 and g-C3N4 was constructed on the surface of metallic Ti implants, in which MnO2 favored the transfer and separation of free charges to enhance the photoconversion efficiency of g-C3N4 by 21.11%. Consequently, the yield of ROS was promoted significantly, which denatured protein and damaged DNA to kill bacteria efficiently. In addition, glutathione (GSH, l-γ-glutamyl-l-cysteinyl-glycine) defending oxidative stress in bacteria, was oxidized by MnO2 in the hybrid coating once the bacterial membrane was disrupted by ROS. Hence, after visible light irradiation for 20 min, MnO2/g-C3N4 coating exhibited superior disinfection efficacy of 99.96% and 99.26% against S. aureus and E. coli severally. This work provided a practical sterilization strategy about MnO2/g-C3N4 systems through the synergistic effects of enhanced photodynamic antibacterial therapy and oxidization effect of MnO2 with great biosafety, in which MnO2 enhanced the photocatalyst property of g-C3N4 to generate more ROS and deplete GSH to improve antibacterial efficiency. It will bring more insight into rapid and highly effective disinfection and antibacterial strategy without using traditional high-temperature, ultraviolet ray and antibiotics that cause side-effects.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhazmat-
dc.relation.ispartofJournal of Hazardous Materials-
dc.subjectPhotocatalytic-
dc.subjectDisinfection-
dc.subjectMnO2 nanosheet-
dc.subjectg-C3N4-
dc.subjectHeterostructure-
dc.titleThe enhanced photocatalytic properties of MnO2/g-C3N4 heterostructure for rapid sterilization under visible light-
dc.typeArticle-
dc.identifier.emailYeung, KWK: wkkyeung@hku.hk-
dc.identifier.authorityYeung, KWK=rp00309-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jhazmat.2019.05.074-
dc.identifier.pmid31170571-
dc.identifier.scopuseid_2-s2.0-85066396059-
dc.identifier.hkuros316858-
dc.identifier.volume377-
dc.identifier.spage227-
dc.identifier.epage236-
dc.identifier.isiWOS:000474676800026-
dc.publisher.placeNetherlands-
dc.relation.erratumdoi:10.1016/j.jhazmat.2019.121504-
dc.identifier.issnl0304-3894-

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