Trimetallic (Aurod-Pdshell-Ptcluster) catalyst used as amperometric hydrogen peroxide sensor

Shou I. Cheng, John Rick, Chun Jern Pan, Hung Lung Chou, Wei Nien Su, Kuan Jung Chen, Chung Chiun Liu, Yaw Wen Yang, Chia Hsin Wang, Bing Joe Hwang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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 (cm2/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/mMcm2 within a linear range of 0.0013-6.191 mM.

Original languageEnglish
Pages (from-to)461-471
Number of pages11
JournalBiosensors
Volume4
Issue number4
DOIs
StatePublished - 2014

Keywords

  • Au core-shell
  • Hydrogen peroxide sensing
  • Nanoparticles
  • Nanorods
  • Trimetallic catalyst

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