Dendritic platinum-decorated gold nanoparticles for non-enzymatic glucose biosensing

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题名:	Dendritic platinum-decorated gold nanoparticles for non-enzymatic glucose biosensing
作者:	劉炯權;Chen, Kuan-Jung;Su, Wei-Nien;Pan, Chun-Jern;Cheng, Shou-Yi;Rick, John;Wang, Shih-Han;Liu, Chung-Chiun;Chang, Chun-Chao;Yang, Yaw-Wen;Wang, Chia-Hsin;Hwang, Bing-Joe
贡献者:	工學院材料科學與工程研究所
关键词:	absorption;acetaminophen;ascorbic acid;Bimetals;catalytic activity;chlorides;Electrical measurements;electrochemistry;electron transfer;glassy carbon electrode;Glucose;Gold;ions;nanogold;Nanoparticles;oxidation;Platinum;Sensors;transmission electron microscopy;ultraviolet-visible spectroscopy;uric acid;X-ray absorption spectroscopy;X-ray diffraction;X-ray photoelectron spectroscopy;X-rays
日期:	2013-12-21
上传时间:	2026-04-23 11:30:22 (UTC+8)
出版者:	Royal Society of Chemistry;England
摘要:	摘要： A bimetallic amperometric sensor comprising a dendritic Pt shell formed on rod-shaped Au cores (Au Pt) for the rapid estimation of glucose by direct electro-oxidation under physiological conditions is reported. The materials were characterized by XRD, TEM, UV-vis, and cyclic voltammetry. The sensor was constructed by immobilizing Au Pt bimetallic nanoparticles, in a Nafion film, on a glassy carbon electrode (Nafion/Au Pt/GCE). The results showed that Au Pt nanoparticles provided significantly higher sensitivity compared to dendritic Pt. X-ray absorption spectroscopy and X-ray photoelectron spectroscopy suggested that electron transfer, from the Au core to dendritic Pt, resulted in significant enhancement of electrocatalytic activity, due to reduction in Pt absorption of glucose oxidation intermediates and Cl ions. In addition, Nafion/Au Pt/GCE was found to exhibit a low working potential, fast amperometric response, high sensitivity, good reproducibility, good long term stability, and a high specificity to glucose with negligible interference from uric acid, ascorbic acid, acetamidophenol, or chloride ions. 其他題名： J Mater Chem B 出版者： England 出版日期： 2013-11-21 出處： Journal of materials chemistry. B, Materials for biology and medicine, 2013-11, Vol.1 (43), p.5925-5932 資源來源： Royal Society of Chemistry 識別號： ISSN: 2050-750X 識別號： ISSN: 2050-7518 識別號： EISSN: 2050-7518 識別號： DOI: 10.1039/c3tb20903b 識別號： PMID: 32261059
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