title: Reduced graphene oxide supported palladium nanoparticles via photoassisted citrate reduction for enhanced electrocatalytic activities.
abstract: Reduced graphene oxide (rGO) supported palladium nanoparticles (Pd NPs) with a size of ∼3 nm were synthesized using one-pot photoassisted citrate reduction. This synthetic approach allows for the formation and assembly of Pd NPs onto the rGO surface with a desired size and can be readily used for other metal NP preparation. The prepared rGO-Pd exhibited 5.2 times higher mass activity for ethanol oxidation reaction than the commercial platinum/carbon (Pt/C). In the oxygen reduction reaction tests, rGO-Pd exhibited comparable activity compared with Pt/C and maintained its high performance after 4000 cycles of potential sweep. These results demonstrate that our synthetic approach is effective for preparing graphene-supported metal NPs with excellent activity and stability in ethanol oxidation and oxygen reduction reactions.
authors.affiliation: CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science & Technology of China , Hefei 230026, China.
authors.forename: Yu-Xi
authors.initials: YX
authors.lastname: Huang
authors.forename: Jia-Fang
authors.initials: JF
authors.lastname: Xie
authors.forename: Xing
authors.initials: X
authors.lastname: Zhang
authors.forename: Lu
authors.initials: L
authors.lastname: Xiong
authors.forename: Han-Qing
authors.initials: HQ
authors.lastname: Yu
keywords: ethanol oxidation reaction; oxygen reduction reaction; palladium nanoparticle; photoassisted citrate reduction; reduced graphene oxide