Bimetallic Pt-Ru Nanoparticle Catalyst for Hydrogen Peroxide Detection | Zendy

Metini Janyasupab | Zendy; Yuan Zhang | Zendy; Po-Yuan Lin | Zendy; Brandon Bartling | Zendy; Jiaqiang Xu | Zendy; Chung-Chiun Liu | Zendy

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Bimetallic Pt-Ru Nanoparticle Catalyst for Hydrogen Peroxide Detection

Author(s) -

Metini Janyasupab,

Yuan Zhang,

Po-Yuan Lin,

Brandon Bartling,

Jiaqiang Xu,

Chung-Chiun Liu

Publication year - 2011

Publication title -

journal of nanotechnology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.347

H-Index - 29

eISSN - 1687-9511

pISSN - 1687-9503

DOI - 10.1155/2011/506862

Subject(s) - bimetallic strip , overpotential , sodium borohydride , catalysis , materials science , high resolution transmission electron microscopy , hydrogen peroxide , nanoparticle , inorganic chemistry , metal , nuclear chemistry , nanotechnology , electrochemistry , electrode , transmission electron microscopy , metallurgy , chemistry , organic chemistry

A bimetallic Pt-Ru nanoparticle catalyst was prepared and characterized for the enhancement of hydrogen peroxide (H2O2) 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 12 nm, with an average of 4.5 nm. The Pt-Ru catalyst exhibited an improved performance at low overpotential (+0.2 V versus Ag/AgCl reference electrode) in H2O2 detection, suggesting a sensitivity value of 78.95 μA⋅mM-1 (or 402.1 μA⋅mM-1⋅cm-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 (+0.4 V versus Ag/AgCl), providing better accuracy in the detection of H2O2

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