An unusual H2O2 electrochemical sensor based on Ni(OH)2 nanoplates grown on Cu substrate
An unusual H2O2 electrochemical sensor based on Ni(OH)2 nanoplates grown on Cu substrate
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DOI：
10.1016/j.electacta.2010.07.023
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发表时间：
2010-10-01
影响因子：
6.6
通讯作者：
Fang, Bin
中科院分区：
文献类型：
--
作者：
Gu, Aixia;Wang, Guangfeng;Fang, Bin
在这工作。在Cu衬底上制备了Ni（OH）2纳米片，并用扫描电子显微镜（SEM）对其进行了表征。X射线粉末衍射（XRD）。和X射线光电子能谱（XPS）。制备了Cu-Ni（OH）（2）修饰玻碳电极（Cu-Ni（OH）（2）/GCE），并对其进行了电化学阻抗谱（EIS）研究。循环伏安法（CV）。结果表明，Cu-Ni（OH）（2）/GCE对H2 O2的还原具有良好的电催化活性。该传感器产生408 1 μ A mM（-1）的灵敏度，低检测限为1.5 μ M（S/N = 3）该电极的响应时间小于5s，具有良好的选择性、稳定性和重复性。(C)2010爱思唯尔有限公司版权所有
In this work. Ni(OH)(2) nanoplates grown on the Cu substrate were synthesized and characterized by scanning electron microscopy (SEM). X-ray powder diffraction (XRD). and X-ray photoelectron spectroscopy (XPS). Then a novel Cu-Ni(OH)(2) modified glass carbon electrode (Cu-Ni(OH)(2)/GCE) was fabricated and evaluated by electrochemical impedance spectroscopy (EIS). cyclic voltammetry (CV). and typical amperometric response (i-t) method Exhilaratingly, the Cu-Ni(OH)(2)/GCE shows significant electrocatalytic activity toward the reduction of H2O2 At an applied potential of-0 1 V, the sensor produces an ultrahigh sensitivity of 408 1 mu A mM(-1) with a low detection limit of 1.5 mu M (S/N = 3) The response time of the proposed electrode was less than 5s What's more, the proposed sensor displays excellent selectivity, good stability, and satisfying repeatability. (C) 2010 Elsevier Ltd All rights reserved