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Synthesis of TiO2/RGO with plasmonic Ag nanoparticles for highly efficient photoelectrocatalytic reduction of CO2 to methanol toward the removal of an organic pollutant from the atmosphere

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dc.contributor.authorBharath, G.-
dc.contributor.authorPrakash, J.-
dc.contributor.authorRambabu, K.-
dc.contributor.authorVenkatasubbu, G. Devanand-
dc.contributor.authorKumar, Ashok-
dc.contributor.authorLee, Seungjun-
dc.contributor.authorTheerthagiri, Jayaraman-
dc.contributor.authorChoi, Myong Yong-
dc.contributor.authorBanat, Fawzi-
dc.date.accessioned2022-12-26T10:15:35Z-
dc.date.available2022-12-26T10:15:35Z-
dc.date.issued2021-07-15-
dc.identifier.issn0269-7491-
dc.identifier.issn1873-6424-
dc.identifier.urihttps://scholarworks.gnu.ac.kr/handle/sw.gnu/3483-
dc.description.abstractThe synergistic photoelectrochemical (PEC) technology is a robust process for the conversion of CO2 into fuels. However, designing a highly efficient UV-visible driven photoelectrocatalyst is still challenging. Herein, a plasmonic Ag NPs modified TiO2/RGO photoelectrocatalyst (Ag-TiO2/RGO) has been designed for the PEC CO2 reduction into selective production of CH3OH. HR-TEM analysis revealed that Ag and TiO2 NPs with average sizes of 4 and 7 nm, respectively, were densely grown on the few-micron-sized 2D RGO nanosheets. The physicochemical analysis was used to determine the optical and textural properties of the Ag-TiO2/RGO nanohybrids. Under VU-Vis light illumination, Ag-TiO2/RGO photocathode possessed a current density of 23.5 mA cm(-2) and a lower electrode resistance value of 125 Omega in CO2-saturated 1.0 M KOH-aqueous electrolyte solution. Catalytic studies showed that the Ag-TiO2/RGO photocathode possessed a remarkable PEC CO2 reduction activity and selective production of CH3OH with a yield of 85 timol L-1 cm(-2), the quantum efficiency of 20% and Faradic efficiency of 60.5% at onset potential of -0.7 V. A plausible PEC CO2 reduction mechanism over Ag-TiO2/RGO photocathode is schematically demonstrated. The present work gives a new avenue to develop high-performance and stable photoelectrocatalyst for PEC CO2 reduction towards sustainable liquid fuels production. (C) 2021 Elsevier Ltd. All rights reserved.-
dc.language영어-
dc.language.isoENG-
dc.publisherPergamon Press Ltd.-
dc.titleSynthesis of TiO2/RGO with plasmonic Ag nanoparticles for highly efficient photoelectrocatalytic reduction of CO2 to methanol toward the removal of an organic pollutant from the atmosphere-
dc.typeArticle-
dc.publisher.location영국-
dc.identifier.doi10.1016/j.envpol.2021.116990-
dc.identifier.scopusid2-s2.0-85103558705-
dc.identifier.wosid000657599600005-
dc.identifier.bibliographicCitationEnvironmental Pollution, v.281-
dc.citation.titleEnvironmental Pollution-
dc.citation.volume281-
dc.type.docTypeArticle-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalResearchAreaEnvironmental Sciences & Ecology-
dc.relation.journalWebOfScienceCategoryEnvironmental Sciences-
dc.subject.keywordPlusREDUCED GRAPHENE OXIDE-
dc.subject.keywordPlusPHOTOCATALYTIC REDUCTION-
dc.subject.keywordPlusDOPED TIO2-
dc.subject.keywordPlusPERFORMANCE-
dc.subject.keywordPlusCHEMICALS-
dc.subject.keywordAuthorPlasmonics-
dc.subject.keywordAuthorHeterogeneous electrocatalysts-
dc.subject.keywordAuthorPhotocathode-
dc.subject.keywordAuthorCO2 reduction-
dc.subject.keywordAuthorMethanol-
dc.subject.keywordAuthorSustainable liquid fuels-
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