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dc.contributor.authorShi, Feifei
dc.contributor.authorBaker, L. Robert
dc.contributor.authorHervier, Antoine
dc.contributor.authorSomorjai, Gabor A.
dc.contributor.authorKomvopoulos, Kyriakos
dc.date.accessioned2016-02-28T06:42:41Z
dc.date.available2016-02-28T06:42:41Z
dc.date.issued2013-08-13
dc.identifier.citationShi F, Baker LR, Hervier A, Somorjai GA, Komvopoulos K (2013) Tuning the Electronic Structure of Titanium Oxide Support to Enhance the Electrochemical Activity of Platinum Nanoparticles. Nano Lett 13: 4469–4474. Available: http://dx.doi.org/10.1021/nl402392u.
dc.identifier.issn1530-6984
dc.identifier.issn1530-6992
dc.identifier.pmid23924204
dc.identifier.doi10.1021/nl402392u
dc.identifier.urihttp://hdl.handle.net/10754/599844
dc.description.abstractTwo times higher activity and three times higher stability in methanol oxidation reaction, a 0.12 V negative shift of the CO oxidation peak potential, and a 0.07 V positive shift of the oxygen reaction potential compared to Pt nanoparticles on pristine TiO2 support were achieved by tuning the electronic structure of the titanium oxide support of Pt nanoparticle catalysts. This was accomplished by adding oxygen vacancies or doping with fluorine. Experimental trends are interpreted in the context of an electronic structure model, showing an improvement in electrochemical activity when the Fermi level of the support material in Pt/TiOx systems is close to the Pt Fermi level and the redox potential of the reaction. The present approach provides guidance for the selection of the support material of Pt/TiOx systems and may be applied to other metal-oxide support materials, thus having direct implications in the design and optimization of fuel cell catalyst supports. © 2013 American Chemical Society.
dc.description.sponsorshipThe authors thank Dr. Philip N. Ross, Jr., for helpful discussions on elertocatalysis, Zhongwei Zhu for assistance in XPS spectra acquisition, and Yimin Li and Hailiang Wang for fruitful discussions. TiO<INF>x</INF> film deposition was carried out at the Marvell Nano Lab, University of California, Berkeley (UCB). SEM and XPS studies were carried out at the Molecular Foundry, Lawrence Berkeley National Laboratory. This research was supported by the UCB-KAUST Academic Excellence Alliance (AEA) Program.
dc.publisherAmerican Chemical Society (ACS)
dc.subjectelectrochemical activity
dc.subjectElectronic structure
dc.subjectplatinum nanoparticles
dc.subjectstrong metal support interaction
dc.subjecttitanium oxide
dc.titleTuning the Electronic Structure of Titanium Oxide Support to Enhance the Electrochemical Activity of Platinum Nanoparticles
dc.typeArticle
dc.identifier.journalNano Letters
dc.contributor.institutionUC Berkeley, Berkeley, United States
dc.contributor.institutionLawrence Berkeley National Laboratory, Berkeley, United States
kaust.grant.programAcademic Excellence Alliance (AEA)
dc.date.published-online2013-08-13
dc.date.published-print2013-09-11


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