title: Graphene nanosheets-polypyrrole hybrid material as a highly active catalyst support for formic acid electro-oxidation.
abstract: A novel electrode material based on graphene oxide (GO)-polypyrrole (PPy) composites was synthesized by in situ chemical oxidation polymerization. Palladium nanoparticles (NPs) with a diameter of 4.0 nm were loaded on the reduced graphene oxide(RGO)-PPy composites by a microwave-assisted polyol process. Microstructure analysis showed that a layer of coated PPy film with monodisperse Pd NPs is present on the RGO surface. The Pd/RGO-PPy catalysts exhibit excellent catalytic activity and stability for formic acid electro-oxidation when the weight feed ratio of GO to pyrrole monomer is 2:1. The superior performance of Pd/RGO-PPy catalysts may arise from utilization of heterogeneous nucleation sites for NPs and the greatly increased electronic conductivity of the supports.
authors.affiliation: College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, PR China.
authors.forename: Sudong
authors.initials: S
authors.lastname: Yang
authors.forename: Chengmin
authors.initials: C
authors.lastname: Shen
authors.forename: Yanyu
authors.initials: Y
authors.lastname: Liang
authors.forename: Hao
authors.initials: H
authors.lastname: Tong
authors.forename: Wei
authors.initials: W
authors.lastname: He
authors.forename: Xuezhao
authors.initials: X
authors.lastname: Shi
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Zhang
authors.forename: Hong-jun
authors.initials: HJ
authors.lastname: Gao
mesh_terms: D055664:Electrochemical Techniques / Q000295:instrumentation*; D005561:Formates / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles; D049329:Nanostructures / Q000737:chemistry*; D010084:Oxidation-Reduction; D010165:Palladium / Q000737:chemistry; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D013464:Sulfuric Acids / Q000737:chemistry; D013818:Thermogravimetry; D014961:X-Ray Diffraction
chemical_list: D005561:Formates; D011108:Polymers; D011758:Pyrroles; D013464:Sulfuric Acids; C030544:formic acid; C067635:polypyrrole; D010165:Palladium; D006108:Graphite; C033158:sulfuric acid