File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: 2 Dimensional Dendrites and 3 Dimensional Growth of Electrodeposited Platinum Nanoparticles

Title2 Dimensional Dendrites and 3 Dimensional Growth of Electrodeposited Platinum Nanoparticles
Authors
KeywordsAtomic force microscopy (AFM)
DLVO theory
Electrodeposition
Nanoparticle
Platinum (Pt)
Issue Date2004
PublisherInstitute of Pure and Applied Physics. The Journal's web site is located at http://www.ipap.jp/jjap/index.htm
Citation
Japanese Journal Of Applied Physics, Part 1: Regular Papers And Short Notes And Review Papers, 2004, v. 43 n. 2, p. 767-770 How to Cite?
AbstractPlatinum (Pt) nanoparticles are of particular interest as catalysts or electrocatalysts in the electrochemical reduction of oxygen. The morphology of Pt nanoparticles is correlated to their catalytic activity. A mechanism for heteroepitaxial Pt particle dendrite formation (2D growth) and coalescence (3D growth) on highly ordered pyrolytic graphite (HOPG) was observed. The mechanism of 2D dendrite growth, which appeared to be the dominant mechanism at low ionic concentration, was similar to colloidal aggregation, while 3D growth occurred at a high ionic concentration. With increasing number of Pt atoms in a cluster, the simulated interaction energy between the Pt cluster and HOPG substrate decreases. The DLVO theory gives some insight into two different growth mechanisms. The energy barrier between coalescing particles decreases with increasing concentration of electrolytes. Various morphologies of Pt electrodeposition on HOPG were suggested based on the competition between 3D growth and 2D particle growth.
Persistent Identifierhttp://hdl.handle.net/10722/69346
ISSN
2015 Impact Factor: 1.122
2015 SCImago Journal Rankings: 0.258
References

 

DC FieldValueLanguage
dc.contributor.authorLee, Ien_HK
dc.contributor.authorChan, KYen_HK
dc.contributor.authorPhillips, DLen_HK
dc.date.accessioned2010-09-06T06:12:49Z-
dc.date.available2010-09-06T06:12:49Z-
dc.date.issued2004en_HK
dc.identifier.citationJapanese Journal Of Applied Physics, Part 1: Regular Papers And Short Notes And Review Papers, 2004, v. 43 n. 2, p. 767-770en_HK
dc.identifier.issn0021-4922en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69346-
dc.description.abstractPlatinum (Pt) nanoparticles are of particular interest as catalysts or electrocatalysts in the electrochemical reduction of oxygen. The morphology of Pt nanoparticles is correlated to their catalytic activity. A mechanism for heteroepitaxial Pt particle dendrite formation (2D growth) and coalescence (3D growth) on highly ordered pyrolytic graphite (HOPG) was observed. The mechanism of 2D dendrite growth, which appeared to be the dominant mechanism at low ionic concentration, was similar to colloidal aggregation, while 3D growth occurred at a high ionic concentration. With increasing number of Pt atoms in a cluster, the simulated interaction energy between the Pt cluster and HOPG substrate decreases. The DLVO theory gives some insight into two different growth mechanisms. The energy barrier between coalescing particles decreases with increasing concentration of electrolytes. Various morphologies of Pt electrodeposition on HOPG were suggested based on the competition between 3D growth and 2D particle growth.en_HK
dc.languageengen_HK
dc.publisherInstitute of Pure and Applied Physics. The Journal's web site is located at http://www.ipap.jp/jjap/index.htmen_HK
dc.relation.ispartofJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papersen_HK
dc.subjectAtomic force microscopy (AFM)en_HK
dc.subjectDLVO theoryen_HK
dc.subjectElectrodepositionen_HK
dc.subjectNanoparticleen_HK
dc.subjectPlatinum (Pt)en_HK
dc.title2 Dimensional Dendrites and 3 Dimensional Growth of Electrodeposited Platinum Nanoparticlesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-4922&volume=43&issue=2&spage=767&epage=770&date=2004&atitle=2+dimensional+dendrites+and+3+dimensional+growth+of+electrodeposited+platinum+nanoparticlesen_HK
dc.identifier.emailChan, KY:hrsccky@hku.hken_HK
dc.identifier.emailPhillips, DL:phillips@hku.hken_HK
dc.identifier.authorityChan, KY=rp00662en_HK
dc.identifier.authorityPhillips, DL=rp00770en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-2142818660en_HK
dc.identifier.hkuros92352en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-2142818660&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume43en_HK
dc.identifier.issue2en_HK
dc.identifier.spage767en_HK
dc.identifier.epage770en_HK
dc.publisher.placeJapanen_HK
dc.identifier.scopusauthoridLee, I=7404437956en_HK
dc.identifier.scopusauthoridChan, KY=7406034142en_HK
dc.identifier.scopusauthoridPhillips, DL=7404519365en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats