A non-enzymatic hydrogen peroxide sensor based on vertical NiO nanosheets supported on the graphite sheet
A non-enzymatic hydrogen peroxide sensor based on vertical NiO nanosheets supported on the graphite sheet
复制标题
基于石墨片支撑的垂直氧化镍纳米片的非酶过氧化氢传感器
DOI：
10.1016/j.jelechem.2015.04.037
复制
发表时间：
2015-07-15
影响因子：
4.5
通讯作者：
Zhang, Xingwang
中科院分区：
文献类型：
--
作者：
Liu, Wei;Zhang, Hongxiu;Zhang, Xingwang
在本研究中，通过一种简单有效的工艺，即表面活性剂模板法，将垂直排列的NiO纳米片直接生长在石墨片上，制备了非酶促过氧化氢传感器。与大多数采用滴涂法的过氧化氢传感器相比，我们的传感器具有更高的灵敏度和良好的稳定性，这得益于垂直排列的NiO纳米片和方法的特点。在最佳条件下，该传感器的检出限为0.4 μ M（信噪比= 3），重复性好（相对标准偏差（RSD）为336%），线性范围宽（达4.0 mM），灵敏度为1077 μ a mM(-1) cm（-2）。此外，所制备的传感器对过氧化氢的检测也表现出良好的选择性和稳定性。该研究为过氧化氢检测提供了一种很有前途的电化学电极。(C) 2015 Elsevier B.V.版权所有
In this study, a non-enzymatic hydrogen peroxide sensor was fabricated by directly growing vertically aligned NiO nanosheets on the graphite sheet through a simple, effective process, i.e. the surfactant-templated method. Compared with most of the reported hydrogen peroxide sensor through drop-coating method, our sensor exhibits a higher sensitivity and a good stability, resulting from the vertically aligned NiO nanosheets and method features. The as-prepared sensor exhibited a detection limit of 0.4 mu M (at signal/noise = 3), a good reproducibility (relative standard deviation (RSD) of 336%), a wide linear range (up to 4.0 mM) with a sensitivity of 1077 mu A mM(-1) cm(-2) under the optimal conditions. Furthermore, the as-prepared sensor also showed excellent selectivity and stability for hydrogen peroxide detection. This study provides a promising electrochemical electrode for hydrogen peroxide detection by a facile method. (C) 2015 Elsevier B.V. All rights reserved.