Bimetallic Pt-Ru nanoparticle catalyst for hydrogen peroxide detection

Metini Janyasupab, Yuan Zhang, Po Yuan Lin, Brandon Bartling, Jiaqiang Xu, Chung Chiun Liu

研究成果: 雜誌貢獻期刊論文同行評審

7 引文 斯高帕斯(Scopus)

摘要

A bimetallic Pt-Ru nanoparticle catalyst was prepared and characterized for the enhancement of hydrogen peroxide (H 2O 2) detection in biosensing applications. The particles were synthesized via sodium borohydride reduction, with low heat treatment, and characterized by TEM and HRTEM. The chemical composition analyses were performed by EDX. The bimetallic particle diameters ranged from 2 to 12nm, with an average of 4.5nm. The Pt-Ru catalyst exhibited an improved performance at low overpotential (+0.2V versus Ag/AgCl reference electrode) in H 2O 2 detection, suggesting a sensitivity value of 78.95μ·mM -1 (or 402·1 μA·mM -1cm -2) which was 30 higher than that for the single Pt catalyst. The major contribution of this enhancement comes from the stronger oxygen adsorption on Ru metal. The Pt-Ru catalyst also showed a more stable signal at the high overpotential (+0.4V versus Ag/AgCl), providing better accuracy in the detection of H 2O 2.

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文章編號506862
期刊Journal of Nanotechnology
DOIs
出版狀態已出版 - 2011

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