Trimetallic (Au(rod)-Pd(shell)-Pt(cluster)) Catalyst Used as Amperometric Hydrogen Peroxide Sensor

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, co...

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Detalles Bibliográficos
Autores principales: Cheng, Shou-I, Rick, John, Pan, Chun-Jern, Chou, Hung-Lung, Su, Wei-Nien, Chen, Kuan-Jung, Liu, Chung-Chiun, Yang, Yaw-Wen, Wang, Chia-Hsin, Hwang, Bing-Joe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4287713/
https://www.ncbi.nlm.nih.gov/pubmed/25587434
http://dx.doi.org/10.3390/bios4040461
Descripción
Sumario: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 Au(rod)-Pd(shell)-Pt(cluster), bimetallic Au(rod)-Pt(cluster) 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.

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