Highly active platinum nanoparticles on graphene nanosheets with a significant improvement in stability and CO tolerance

Daping He; Kun Cheng; Huaiguang Li; Tao Peng; Feng Xu; Shichun Mu; Mu Pan

doi:10.1021/la2045493

Highly active platinum nanoparticles on graphene nanosheets with a significant improvement in stability and CO tolerance

Langmuir. 2012 Feb 28;28(8):3979-86. doi: 10.1021/la2045493. Epub 2012 Feb 9.

Authors

Daping He¹, Kun Cheng, Huaiguang Li, Tao Peng, Feng Xu, Shichun Mu, Mu Pan

Affiliation

¹ State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China.

PMID: 22276697
DOI: 10.1021/la2045493

Abstract

Graphene nanosheets (GNS) supporting Pt nanoparticles (PNs) are prepared using perfluorosulfonic acid (PFSA) as a functionalization and anchoring agent. Transmission electron microscope (TEM) results indicate that the prepared Pt NPs are uniformly deposited on GNS with a narrow particle size ranging from 1 to 4 nm in diameter. A high catalytic activity of this novel catalyst is observed by both cyclic voltammetry and oxygen reduction reaction (ORR) measurements due to the increasing of proton (H(+)) transmission channels. Significantly, this novel PFSA-functionalized Pt/GNS (PFSA-Pt/GNS) catalyst reveals a better CO oxidation and lower loss rate of electrochemical active area in comparison with that of the plain Pt/GNS and conventional Pt/C catalysts, indicating our PFSA-Pt/GNS catalysts hold much higher stability and CO tolerance by virtue of introduction of PFSA.