Bimetallic catalyst of PtIr nanoparticles with high electrocatalytic ability for hydrogen peroxide oxidation

Shih Hong Chang, Min Hsin Yeh, John Rick, Wei Nien Su, Din Goa Liu, Jyh Fu Lee, Chung Chiun Liu, Bing Joe Hwang

研究成果: 雜誌貢獻期刊論文同行評審

35 引文 斯高帕斯(Scopus)

摘要

Carbon supported platinum-iridium bimetallic nanoparticles (PtIr/C) for the electrochemical sensing of hydrogen peroxide (H2O2) were developed. Both the cyclic voltammogram (CV) and the amperometric response indicated that PtIr/C possesses a higher oxidation current than either Pt/C or Ir/C over the detection range 0-10 mM at 0.25 V (vs. SCE). The addition of Ir appears to facilitate oxidation kinetics and decrease the competitive adsorption of dioxygen and oxygenated intermediates. These changes were investigated by electrochemical measurements and X-ray absorption near edge spectroscopy (XANES). This study demonstrated that the PtIr/C provide a stable platform for electrochemical sensing of H2O2-derivated biospecies without enzymes and redox mediators.

原文???core.languages.en_GB???
頁(從 - 到)55-60
頁數6
期刊Sensors and Actuators, B: Chemical
190
DOIs
出版狀態已出版 - 2014

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