Ni nanoparticles decorated titania nanotube arrays as efficient nonenzymatic glucose sensor
Ni nanoparticles decorated titania nanotube arrays as efficient nonenzymatic glucose sensor
复制标题
DOI：
10.1016/j.electacta.2012.05.079
复制
发表时间：
2012-08
影响因子：
6.6
通讯作者：
Shujuan Yu;Xiao-Jiao Peng;G. Cao;Ming Zhou;Lei Qiao;Jianyu Yao;Huichao He
中科院分区：
文献类型：
--
作者：
Shujuan Yu;Xiao-Jiao Peng;G. Cao;Ming Zhou;Lei Qiao;Jianyu Yao;Huichao He
基于Ni纳米粒子负载的TiO 2纳米管阵列（Ni-NPs/TiO 2 NTs），研制了一种新型的非酶葡萄糖传感器。采用阳极氧化法和脉冲电沉积法（PED）制备了Ni-NPs/TiO 2 NTs纳米复合材料，并用SEM、XRD和XPS等手段对复合材料进行了表征。结果表明，球形Ni纳米粒子在TiO 2 NTs中分散良好，并嵌入其中。电化学测试结果表明，粒径为40 nm的活化镍纳米粒子对葡萄糖的氧化具有很高的电催化活性，在0.6V的电位下，灵敏度为700.2μA mM−1cm− 2，检出限为2μM（S/N=3），线性范围为0.004 ~ 4.8mM。这种高灵敏度归因于用于电催化反应的高度分散的纳米颗粒的大表面积和在TiO 2 NTs电极中的快速电子转移。该电极材料具有分析性能好、成本低、制备方法简单等优点，有望成为高效的葡萄糖非酶葡萄糖传感器。
A novel nonenzymatic glucose sensor was developed based on the Ni nanoparticles-loaded TiO2nanotube arrays (Ni-NPs/TiO2NTs). The Ni-NPs/TiO2NTs nanocomposites were prepared first by anodization of Ti foil, followed by pulsed electrodeposition method (PED) and characterized by SEM, XRD and XPS respectively. The results showed that spherical Ni nanoparticles were well dispersed and embedded in the TiO2NTs. The electrochemical measurements presented that the activated Ni-NPs with a diameter of 40nm displayed high electrocatalytic activity for the oxidation of glucose and a good sensitivity of 700.2μA mM−1cm−2at applied potential 0.6V, with detection limit of 2μM (S/N=3), and good linear range (from 0.004 to 4.8mM). Such high sensitivity was attributed to the large surface area of the highly dispersed nanoparticles for electrocatalytic reaction and the fast electron transfer in the TiO2NTs electrode. The good analytical performance, low cost and simple preparation method make this novel electrode material promising for the development of effective glucose nonenzymatic glucose sensor.