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Article: Electrocatalytic oxidation of formic acid by Pt/Co nanoparticles

TitleElectrocatalytic oxidation of formic acid by Pt/Co nanoparticles
Authors
KeywordsBimetallic particles
Electrocatalysis
Nanoparticles
Pt particles
Pt/Co
Issue Date2001
PublisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=1011-372X
Citation
Catalysis Letters, 2001, v. 71 n. 1-2, p. 21-26 How to Cite?
AbstractThe electrocatalytic activity of Pt/Co bimetallic nanoparticles towards formic acid (0.2 M HCOONa/0.28 M HClO 4) oxidation was explored by cyclic voltammetry of the nanoparticles supported on highly oriented pyrolytic graphite (HOPG). The particles were prepared by electrodeposition from a bath of mixed concentrations of Co 2+ and PtCl 2- 6 ions and characterized by tapping mode atomic force microscopy (TMAFM). The compositions of the nanoparticles were determined as close as possible to individual particles by energy dispersive X-ray analysis (EDX). Nanoparticles of different atomic ratios of Pt/Co were prepared and the peak currents in cyclic voltammetry of formic acid oxidation were measured. The activity of the bimetallic particles was found to be maximum when the atom ratio Pt : Co is between 1:1.1 and 1:3.5. The maximum activity is about one order of magnitude higher than that of pure Pt nanoparticles. Comparison of the currents to those from microelectrodes and wire electrodes shows no mass-transfer limitations in nanoparticles with diameters less than 100 nm. The bimetallic particles exhibit interesting kinetics and Co appears to significantly enhance the electroxidation of formic acid. The advantage of using nanoparticles for mass-transfer free kinetics studies is also demonstrated.
Persistent Identifierhttp://hdl.handle.net/10722/70288
ISSN
2015 Impact Factor: 2.294
2015 SCImago Journal Rankings: 0.777
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChi, Nen_HK
dc.contributor.authorChan, KYen_HK
dc.contributor.authorPhillips, DLen_HK
dc.date.accessioned2010-09-06T06:21:28Z-
dc.date.available2010-09-06T06:21:28Z-
dc.date.issued2001en_HK
dc.identifier.citationCatalysis Letters, 2001, v. 71 n. 1-2, p. 21-26en_HK
dc.identifier.issn1011-372Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/70288-
dc.description.abstractThe electrocatalytic activity of Pt/Co bimetallic nanoparticles towards formic acid (0.2 M HCOONa/0.28 M HClO 4) oxidation was explored by cyclic voltammetry of the nanoparticles supported on highly oriented pyrolytic graphite (HOPG). The particles were prepared by electrodeposition from a bath of mixed concentrations of Co 2+ and PtCl 2- 6 ions and characterized by tapping mode atomic force microscopy (TMAFM). The compositions of the nanoparticles were determined as close as possible to individual particles by energy dispersive X-ray analysis (EDX). Nanoparticles of different atomic ratios of Pt/Co were prepared and the peak currents in cyclic voltammetry of formic acid oxidation were measured. The activity of the bimetallic particles was found to be maximum when the atom ratio Pt : Co is between 1:1.1 and 1:3.5. The maximum activity is about one order of magnitude higher than that of pure Pt nanoparticles. Comparison of the currents to those from microelectrodes and wire electrodes shows no mass-transfer limitations in nanoparticles with diameters less than 100 nm. The bimetallic particles exhibit interesting kinetics and Co appears to significantly enhance the electroxidation of formic acid. The advantage of using nanoparticles for mass-transfer free kinetics studies is also demonstrated.en_HK
dc.languageengen_HK
dc.publisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=1011-372Xen_HK
dc.relation.ispartofCatalysis Lettersen_HK
dc.subjectBimetallic particlesen_HK
dc.subjectElectrocatalysisen_HK
dc.subjectNanoparticlesen_HK
dc.subjectPt particlesen_HK
dc.subjectPt/Coen_HK
dc.titleElectrocatalytic oxidation of formic acid by Pt/Co nanoparticlesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1011-372X&volume=71&issue=1-2&spage=21&epage=26&date=2001&atitle=Electrocatalytic+oxidation+of+formic+acid+by+Pt/Co+nanoparticlesen_HK
dc.identifier.emailPhillips, DL:phillips@hku.hken_HK
dc.identifier.authorityPhillips, DL=rp00770en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1023/A:1016639905093en_HK
dc.identifier.scopuseid_2-s2.0-0003161888en_HK
dc.identifier.hkuros62406en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0003161888&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume71en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage21en_HK
dc.identifier.epage26en_HK
dc.identifier.isiWOS:000168379800004-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridChi, N=7006655640en_HK
dc.identifier.scopusauthoridChan, KY=36915727100en_HK
dc.identifier.scopusauthoridPhillips, DL=7404519365en_HK

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