title: Trimetallic (aurod-pdshell-ptcluster) catalyst used as amperometric hydrogen peroxide sensor.
abstract: Bimetallic nanostructured core-shell structures are commonly used as catalysts in a wide variety of reactions. We surmised that the addition of an additional metal would potentially allow catalytic tailoring with the possibility of an increase in activity. Here a tri-metallic catalytic structure, consisting of clustered catalytic Pt on the surface of a Pd shell supported on a rod shaped Au core was fabricated. The significance of the additional metallic component is shown by comparative electrochemically active surface area (ECSA) analysis results for the trimetallic Aurod-Pdshell-Ptcluster, bimetallic Aurod-Ptcluster and monometallic JM-Pt (used as a reference), which have respective ECSA values (cm(2)/mgPt) of 1883.0, 1371.7 and 879. The potential utility of the trimetallic catalysts was shown in a hydrogen peroxide sensing protocol, which showed the catalyst to have a sensitivity of 604 ìA/mMcm(2) within a linear range of 0.0013-6.191 mM.
authors.affiliation: Nanoelectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
authors.forename: Shou-I
authors.initials: SI
authors.lastname: Cheng
authors.affiliation: Nanoelectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
authors.forename: John
authors.initials: J
authors.lastname: Rick
authors.affiliation: Nanoelectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
authors.forename: Chun-Jern
authors.initials: CJ
authors.lastname: Pan
authors.affiliation: Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
authors.forename: Hung-Lung
authors.initials: HL
authors.lastname: Chou
authors.affiliation: Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
authors.forename: Wei-Nien
authors.initials: WN
authors.lastname: Su
authors.affiliation: Nanoelectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
authors.forename: Kuan-Jung
authors.initials: KJ
authors.lastname: Chen
authors.affiliation: Department of Chemical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA.
authors.forename: Chung-Chiun
authors.initials: CC
authors.lastname: Liu
authors.affiliation: National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan.
authors.forename: Yaw-Wen
authors.initials: YW
authors.lastname: Yang
authors.affiliation: National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan.
authors.forename: Chia-Hsin
authors.initials: CH
authors.lastname: Wang
authors.affiliation: Nanoelectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.|National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan.
authors.forename: Bing-Joe
authors.identifier: 0000-0002-3873-2149
authors.initials: BJ
authors.lastname: Hwang
keywords: Au core-shell; hydrogen peroxide sensing; nanoparticles; nanorods; trimetallic catalyst