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Article: Synergistic effects of Pd–Ag bimetals and g-C3N4 photocatalysts for selective and efficient conversion of gaseous CO2

TitleSynergistic effects of Pd–Ag bimetals and g-C3N4 photocatalysts for selective and efficient conversion of gaseous CO2
Authors
KeywordsG-C3N4 nanosheet
Pd–Ag bimetals
CO2 conversion
Photocatalysts
Issue Date2020
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jpowsour
Citation
Journal of Power Sources, 2020, v. 466, p. article no. 228306 How to Cite?
AbstractPhotoconversion of CO2 has been a promising method to decrease the emission of CO2 and obtain useful fuel source. Yet, the conversion efficiency and the selectivity of CO2 conversion by the photocatalysts have not been fully understood. Here, graphitic carbon nitride (g–C3N4)–based photocatalysts is fabricated with the incorporation of Pd–Ag bimetallic nanoparticles for CO2 conversion. The production rate and selective conversion feature of the photocatalysts are highly dependent on the molar ratio of the deposited Pd–Ag bimetals. Higher Pd content of the bimetals is favorable in selectively producing CH4 while lower Pd content preferably contribute to selective production of CO. The sample with 1:2 M ratio of Pd–Ag remarkably produces 5.42 μmol/g·h of CO and 4.03 μmol/g·h of CH4. Especially, the CH4 production rate is 40 times higher than that of bare g-C3N4 photocatalysts. Further understanding of the selective conversion and higher production rate by the decorated Pd–Ag bimetallic nanoparticles onto g-C3N4 are provided, elucidating the importance on the activation of g-C3N4 through bimetal structure.
Persistent Identifierhttp://hdl.handle.net/10722/287676
ISSN
2019 Impact Factor: 8.247
2015 SCImago Journal Rankings: 2.008
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWANG, Z-
dc.contributor.authorLee, H-
dc.contributor.authorCHEN, J-
dc.contributor.authorWU, M-
dc.contributor.authorLeung, DYC-
dc.contributor.authorGrimes, CA-
dc.contributor.authorLu, Z-
dc.contributor.authorXu, Z-
dc.contributor.authorFeng, SP-
dc.date.accessioned2020-10-05T12:01:36Z-
dc.date.available2020-10-05T12:01:36Z-
dc.date.issued2020-
dc.identifier.citationJournal of Power Sources, 2020, v. 466, p. article no. 228306-
dc.identifier.issn0378-7753-
dc.identifier.urihttp://hdl.handle.net/10722/287676-
dc.description.abstractPhotoconversion of CO2 has been a promising method to decrease the emission of CO2 and obtain useful fuel source. Yet, the conversion efficiency and the selectivity of CO2 conversion by the photocatalysts have not been fully understood. Here, graphitic carbon nitride (g–C3N4)–based photocatalysts is fabricated with the incorporation of Pd–Ag bimetallic nanoparticles for CO2 conversion. The production rate and selective conversion feature of the photocatalysts are highly dependent on the molar ratio of the deposited Pd–Ag bimetals. Higher Pd content of the bimetals is favorable in selectively producing CH4 while lower Pd content preferably contribute to selective production of CO. The sample with 1:2 M ratio of Pd–Ag remarkably produces 5.42 μmol/g·h of CO and 4.03 μmol/g·h of CH4. Especially, the CH4 production rate is 40 times higher than that of bare g-C3N4 photocatalysts. Further understanding of the selective conversion and higher production rate by the decorated Pd–Ag bimetallic nanoparticles onto g-C3N4 are provided, elucidating the importance on the activation of g-C3N4 through bimetal structure.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jpowsour-
dc.relation.ispartofJournal of Power Sources-
dc.subjectG-C3N4 nanosheet-
dc.subjectPd–Ag bimetals-
dc.subjectCO2 conversion-
dc.subjectPhotocatalysts-
dc.titleSynergistic effects of Pd–Ag bimetals and g-C3N4 photocatalysts for selective and efficient conversion of gaseous CO2-
dc.typeArticle-
dc.identifier.emailLeung, DYC: ycleung@hku.hk-
dc.identifier.emailFeng, SP: hpfeng@hku.hk-
dc.identifier.authorityLeung, DYC=rp00149-
dc.identifier.authorityFeng, SP=rp01533-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jpowsour.2020.228306-
dc.identifier.scopuseid_2-s2.0-85084419862-
dc.identifier.hkuros315431-
dc.identifier.volume466-
dc.identifier.spagearticle no. 228306-
dc.identifier.epagearticle no. 228306-
dc.identifier.isiWOS:000540457100012-
dc.publisher.placeNetherlands-
dc.identifier.issnl0378-7753-

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