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Trimetallic (Aurod-Pdshell-Ptcluster) Catalyst Used as Amperometric Hydrogen Peroxide Sensor

By 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 and Bing-Joe Hwang

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

Topics: trimetallic catalyst, Au core-shell, hydrogen peroxide sensing, nanoparticles, nanorods, Biotechnology, TP248.13-248.65
Publisher: MDPI AG
Year: 2014
DOI identifier: 10.3390/bios4040461
OAI identifier: oai:doaj.org/article:d46d2bbfb5024349a8eceb2aa93256ac
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