镍纳米粒子自支撑电极材料的制备及其用于葡萄糖传感性能研究  

Fabrication of Free-standing Nickel Nanoparticles Decorated Material for Enzymeless Glucose Sensing

作　　者：刘珊 齐凯丽 陈荣生 LIU Shan;QI Kaili;CHEN Rongsheng(School of Chemistry and Chemical Engineering,Wuhan University of Science and Technology,Wuhan 430081)

机构地区：[1]武汉科技大学化学与化工学院,湖北武汉430081

出　　处：《分析科学学报》2020年第5期753-758,共6页Journal of Analytical Science

基　　金：国家重点研发计划(No.2018YFC1900602)。

摘　　要：本文通过阳极氧化法在钛片上制备出一维Ti Ow纳米管阵列(TiO_2 NTAs),并以此为基底制备出镍纳米颗粒(Ni NPs)负载的碳包TiO_2 NTAs(NiNPs/TiO_2@CNTAs),纳米管长度约4.5μm,外径约120nm。在0.2mol/LNaOH溶液中,外加电位为0.55V(vs.Ag/AgCl)时,对葡萄糖响应的灵敏度为182.72μA/(mmol/L·cm^2),线性范围为11~4986μmol/L,检测限(S/N=3)为13μmol/L。该电极对葡萄糖的测定具有良好的重现性,相对标准偏差(RSD,n=10)为6.8%,人体血清中共存的生物分子如尿酸、抗坏血酸等均不会对其造成干扰。Glucose sensors have been extensively applied in clinical analysis and intensively explored recently.Herein,a novel enzymeless glucose sensor was fabricated based on nickel nanoparticles decorated carbon coated TiO2 nanotube arrays(Ni NPs/TiO2@C NTAs).TiO2 NTAs was prepared by electrochemical anodization on Ti foil.The nanotubes show a length of 4.5 μm and an outer diameter of 120 nm.The sensitivity of glucose response is calculated to be 182.72 μA/(mmol/L·cm2) in 0.2 mol/L NaOH at an applied potential of 0.55 V,with a linear range of 11-4 986 μmol/L and a detection limit of 13 μmol/L(S/N=3).This sensor shows an RSD of 6.8%(n=10) in successive glucose addition,suggesting good reproducibility towards glucose determination.The coexistent species such as ascorbic acid and uric acid produce minimal response in glucose determination,indicating high selectivity of this sensor.

关 键 词：电化学传感器 无酶葡萄糖传感器 自支撑电极 一维纳米管阵列 水热法 

分 类 号：O657.1[理学—分析化学]