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Biosensors 2014, 4(4), 461-471; doi:10.3390/bios4040461

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

1
Nanoelectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
2
Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan
3
Department of Chemical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
4
National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 2 July 2014 / Revised: 8 September 2014 / Accepted: 16 September 2014 / Published: 19 November 2014
(This article belongs to the Special Issue Electrochemical and Biomedical Sensors)
View Full-Text   |   Download PDF [779 KB, uploaded 19 November 2014]   |  

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. View Full-Text
Keywords: trimetallic catalyst; Au core-shell; hydrogen peroxide sensing; nanoparticles; nanorods trimetallic catalyst; Au core-shell; hydrogen peroxide sensing; nanoparticles; nanorods
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Cheng, S.-I.; Rick, J.; Pan, C.-J.; Chou, H.-L.; Su, W.-N.; Chen, K.-J.; Liu, C.-C.; Yang, Y.-W.; Wang, C.-H.; Hwang, B.-J. Trimetallic (Aurod-Pdshell-Ptcluster) Catalyst Used as Amperometric Hydrogen Peroxide Sensor. Biosensors 2014, 4, 461-471.

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