Ultrasonic electrodeposition of platinum nanoflowers and their application in nonenzymatic glucose sensors
Ultrasonic electrodeposition of platinum nanoflowers and their application in nonenzymatic glucose sensors
复制标题
铂纳米花的超声电沉积及其在非酶葡萄糖传感器中的应用
DOI：
10.1016/j.electacta.2011.11.114
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发表时间：
2012-02-29
影响因子：
6.6
通讯作者：
Xu, X. H.
中科院分区：
文献类型：
--
作者：
Guo, M. Q.;Hong, H. S.;Xu, X. H.
在本研究中，采用无模板超声电沉积方法在裸金电极上制备了 Pt 纳米花。使用扫描电子显微镜、X射线光电子能谱、能量色散X射线探测器以及X射线衍射进行表征。研究发现Pt纳米花由金属Pt组成。通过循环伏安法和微分脉冲伏安法研究了Pt纳米花电极对葡萄糖氧化的电催化性能。循环伏安图（CV）结果表明，Pt纳米花电极在中性介质中对葡萄糖氧化表现出优异的催化活性。微分脉冲伏安图(DPVs)结果显示，+0.03 V时，电极对葡萄糖氧化的灵敏度为1.87 mu A cm(-2) mM(-1)，线性范围为1 mM～16 mM，检出限为48 μM(信噪比为3)。此外，非酶葡萄糖传感器表现出优异的选择性、稳定性和重复性。 (C) 2011 Elsevier Ltd. 保留所有权利。
In the present study, Pt nanoflowers were fabricated on the bare Au electrodes by using template-free ultrasonic electrodeposition method. Scanning electron microscopy, X-ray photoelectron spectroscopy, energy dispersive X-ray detector as well as X-ray diffraction were used for the characterization. It was found that Pt nanoflowers were composed of metallic Pt. The electrocatalytic properties of the Pt nanoflowers electrode for glucose oxidation were investigated by cyclic voltammetry and differential pulse voltammetry. Cyclic voltammograms (CVs) results showed that the Pt nanoflowers electrode exhibited excellent catalytic activity towards glucose oxidation in neutral media. Differential pulse voltammograms (DPVs) results showed that at +0.03 V. the sensitivity of the electrode to glucose oxidation was 1.87 mu A cm(-2) mM(-1) with a linear range from 1 mM to 16 mM and detection limit of 48 mu M (signal-to-noise ratio of 3). In addition, the nonenzymatic glucose sensors exhibited excellent selectivity, stability and repeatability. (C) 2011 Elsevier Ltd. All rights reserved.