File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Water-in-oil microemulsion synthesis of platinum-ruthenium nanoparticles, their characterization and electrocatalytic properties

TitleWater-in-oil microemulsion synthesis of platinum-ruthenium nanoparticles, their characterization and electrocatalytic properties
Authors
Issue Date2003
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/cm
Citation
Chemistry Of Materials, 2003, v. 15 n. 2, p. 451-459 How to Cite?
AbstractMixed platinum-ruthenium nanoparticles are prepared by water-in-oil reverse micro-emulsions of water/Triton X-100/propanol-2/cyclohexane. Nanoparticles formed in the microemulsions are characterized by transmission electron microscopy (TEM), electron diffraction (ED), X-ray diffractometry (XRD), energy-dispersive X-ray analysis (EDX), and X-ray photoelectron spectroscopy (XPS). TEM results show a narrow distribution of Pt-Ru nanoparticles. A homogeneous alloy structure in the bimetallic nanoparticles is indicated by XRD analysis and ED analysis. The composition of the Pt-Ru nanoparticles can be easily controlled by the relative concentration of Pt and Ru in the initial precursor solution. The composition that was in the Pt-Ru nano-alloy is found to be the same as that in the original precursor solution. XPS analysis reveals the presence of Pt and Ru metal as well as some oxide of ruthenium. The effect of precursor concentration on microemulsion drop size was investigated by photo correlation spectroscopy (PCS) measurement. The size of Pt-Ru nanoparticles depends on the concentration of precursor in the aqueous phase. At low precursor concentration, the final particle size is about 2.5 nm and appears to be limited by nucleation. At high precursor concentration, the final particle size is about 4.5 nm and appears to be limited by the collisions and mixing with thousands of hydrazine droplets. The Pt-Ru nanoparticles supported on a carbon electrode possessed high dispersion and high catalytic activity for methanol oxidation at room temperature.
Persistent Identifierhttp://hdl.handle.net/10722/69752
ISSN
2015 Impact Factor: 9.407
2015 SCImago Journal Rankings: 4.232
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhang, Xen_HK
dc.contributor.authorChan, KYen_HK
dc.date.accessioned2010-09-06T06:16:31Z-
dc.date.available2010-09-06T06:16:31Z-
dc.date.issued2003en_HK
dc.identifier.citationChemistry Of Materials, 2003, v. 15 n. 2, p. 451-459en_HK
dc.identifier.issn0897-4756en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69752-
dc.description.abstractMixed platinum-ruthenium nanoparticles are prepared by water-in-oil reverse micro-emulsions of water/Triton X-100/propanol-2/cyclohexane. Nanoparticles formed in the microemulsions are characterized by transmission electron microscopy (TEM), electron diffraction (ED), X-ray diffractometry (XRD), energy-dispersive X-ray analysis (EDX), and X-ray photoelectron spectroscopy (XPS). TEM results show a narrow distribution of Pt-Ru nanoparticles. A homogeneous alloy structure in the bimetallic nanoparticles is indicated by XRD analysis and ED analysis. The composition of the Pt-Ru nanoparticles can be easily controlled by the relative concentration of Pt and Ru in the initial precursor solution. The composition that was in the Pt-Ru nano-alloy is found to be the same as that in the original precursor solution. XPS analysis reveals the presence of Pt and Ru metal as well as some oxide of ruthenium. The effect of precursor concentration on microemulsion drop size was investigated by photo correlation spectroscopy (PCS) measurement. The size of Pt-Ru nanoparticles depends on the concentration of precursor in the aqueous phase. At low precursor concentration, the final particle size is about 2.5 nm and appears to be limited by nucleation. At high precursor concentration, the final particle size is about 4.5 nm and appears to be limited by the collisions and mixing with thousands of hydrazine droplets. The Pt-Ru nanoparticles supported on a carbon electrode possessed high dispersion and high catalytic activity for methanol oxidation at room temperature.en_HK
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/cmen_HK
dc.relation.ispartofChemistry of Materialsen_HK
dc.titleWater-in-oil microemulsion synthesis of platinum-ruthenium nanoparticles, their characterization and electrocatalytic propertiesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0897-4756&volume=15&issue=2&spage=451&epage=459&date=2003&atitle=Water-in-oil+microemulsion+synthesis+of+platinum-ruthenium+nanoparticles,+their+characterization+and+electrocatalytic+propertiesen_HK
dc.identifier.emailChan, KY:hrsccky@hku.hken_HK
dc.identifier.authorityChan, KY=rp00662en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/cm0203868en_HK
dc.identifier.scopuseid_2-s2.0-0037244021en_HK
dc.identifier.hkuros75911en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037244021&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume15en_HK
dc.identifier.issue2en_HK
dc.identifier.spage451en_HK
dc.identifier.epage459en_HK
dc.identifier.isiWOS:000180603200014-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZhang, X=36066911900en_HK
dc.identifier.scopusauthoridChan, KY=7406034142en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats