Pt monolayer shell on hollow Pd core electrocatalysts: Scale up synthesis, structure, and activity for the oxygen reduction reaction | Zendy

Miomir B. Vukmirovic | Zendy; Yu Zhang | Zendy; Jia Wang | Zendy; David Buceta | Zendy; Lijun Wu | Zendy; Radoslav R. Adžić | Zendy

Open Access

Pt monolayer shell on hollow Pd core electrocatalysts: Scale up synthesis, structure, and activity for the oxygen reduction reaction

Author(s) -

Miomir B. Vukmirovic,

Yu Zhang,

Jia Wang,

David Buceta,

Lijun Wu,

Radoslav R. Adžić

Publication year - 2013

Publication title -

journal of the serbian chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 45

eISSN - 1820-7421

pISSN - 0352-5139

DOI - 10.2298/jsc131024117v

Subject(s) - monolayer , oxygen reduction reaction , catalysis , materials science , nanoparticle , chemical engineering , oxygen reduction , electrocatalyst , oxygen , nanotechnology , electrode , chemistry , electrochemistry , organic chemistry , engineering

We report on synthesis, characterization and the oxygen reduction reaction (ORR) kinetics of Pt monolayer shell on Pd(hollow), or Pd-Au(hollow) core electrocatalysts. Comparison between the ORR catalytic activity of the electrocatalysts with hollow cores and those of Pt solid and Pt hollow nanoparticles has been obtained using the rotating disk electrode technique. Hollow nanoparticles were made using Ni or Cu nanoparticles as sacrificial templates. The Pt ORR specific and mass activities of the electrocatalysts with hollow cores were found considerably higher than those of the electrocatalysts with the solid cores. We attribute this enhanced Pt activity to the smooth surface morphology and hollow-induced lattice contraction, in addition to the mass-saving geometry of hollow particles

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