Fabrication of Ir nanoparticle-based biosensors by plasma electrochemical reduction for enzyme-free detection of hydrogen peroxide

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题名:	Fabrication of Ir nanoparticle-based biosensors by plasma electrochemical reduction for enzyme-free detection of hydrogen peroxide
作者:	劉炯權;Lee, Seung Whan;Janyasupab, Metini;Liu, Chung-Chiun;Sankaran, R. Mohan
贡献者:	工學院材料科學與工程研究所
关键词:	Amperometry;atmospheric pressure;Biosensor;biosensors;Catalysis;catalytic activity;chemical reduction;Chemistry;Colloidal state and disperse state;Electrochemistry;electrodes;Exact sciences and technology;General and physical chemistry;Hydrogen peroxide;iridium;Nanoparticle;nanoparticles;Physical and chemical studies. Granulometry. Electrokinetic phenomena;Plasma;Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
日期:	2013-08-01
上传时间:	2026-04-23 11:34:49 (UTC+8)
出版者:	Elsevier;Amsterdam: Elsevier B.V
摘要:	摘要： •A new plasma-based technique for the synthesis of Ir nanoparticles is presented.•The synthesized Ir nanoparticles are free of metallic impurities.•Electrochemical sensing of hydrogen peroxide is demonstrated.•The technique is suitable for single-step fabrication of flexible biosensors. We present a plasma-based technique to synthesize iridium nanoparticles (Ir NPs) for enzyme-free detection of hydrogen peroxide (H2O2). Solutions of Ir salt precursor are electrochemically reduced by a gaseous, atmospheric-pressure microplasma electrode. As compared to Ir NPs synthesized by chemical reduction, Ir NPs synthesized by plasma electrochemical reduction (PER) are free of metallic impurities such as Na. The resulting electrocatalytic properties of the Ir NPs synthesized by PER are found to be superior, including higher sensitivity and selectivity. Finally, we show that this approach can be extended to the fabrication of flexible Ir NP-based biosensors in a single step. 出版者： Amsterdam: Elsevier B.V 出版日期： 2013-08-01 出處： Catalysis Today, 2013-08, Vol.211, p.137-142 版權： 2013 Elsevier B.V. 版權： 2014 INIST-CNRS 識別號： ISSN: 0920-5861 識別號： EISSN: 1873-4308 識別號： DOI: 10.1016/j.cattod.2013.03.023 識別號： CODEN: CATTEA
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