title: Highly active platinum nanoparticles on graphene nanosheets with a significant improvement in stability and CO tolerance.
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.
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China.
authors.forename: Daping
authors.initials: D
authors.lastname: He
authors.forename: Kun
authors.initials: K
authors.lastname: Cheng
authors.forename: Huaiguang
authors.initials: H
authors.lastname: Li
authors.forename: Tao
authors.initials: T
authors.lastname: Peng
authors.forename: Feng
authors.initials: F
authors.lastname: Xu
authors.forename: Shichun
authors.initials: S
authors.lastname: Mu
authors.forename: Mu
authors.initials: M
authors.lastname: Pan