Ti3C2TX/Au@Pt纳米花复合膜的制备及其无酶H2O2传感器的应用  

Preparation of an Enzyme-free Ti3C2Tx/Au@Pt Nanoflowers Composite Sensor and Its Application in H2O2 Detection

作　　者：王广现 姚瑶 褚光雷 张慧 郭业民[1] WANG Guang-xian;YAO Yao;CHU Guang-lei;ZHANG Hui;GUO Ye-min(School of Agriculture Engineering and Food Science,Shandong University of Technology,Zibo 255000,China)

机构地区：[1]山东理工大学农业工程与食品科学学院

出　　处：《分析测试学报》2019年第10期1254-1259,共6页Journal of Instrumental Analysis

基　　金：国家自然科学基金面上项目(31772068);山东省自然科学基金重大基础研究项目(ZR2018ZC0126)

摘　　要：基于二维过渡金属碳化物(MXene)-Ti3C2Tx材料的导电性与Au@Pt纳米花的催化活性,组装了一种用于超灵敏和快速检测H2O2含量的Ti3C2Tx/Au@Pt纳米花无酶传感器。通过发射扫描电镜和X-射线衍射对制备的Ti3C2Tx进行表征。结果表明Ti3C2Tx材料表现出特有的手风琴结构,Ti3C2Tx/Au@Pt为以Au粒子为中心,Pt粒子环绕周围组成蒲公英状纳米球。研究了H2O2在Ti3C2Tx/Au@Pt纳米花修饰玻碳电极上的循环伏安曲线和时间电流曲线,结果显示该修饰电极检测H2O2具有线性范围良好(0.03~1100μmol/L)、灵敏度高(检出限可达0.02μmol/L)、抗干扰性和再现性好等优点。与传统滴定法相比,该新型无酶传感器能在复杂环境下快速准确检出H2O2含量。Based on the conductivity of two-dimensional transition metal carbide(MXene)-Ti3C2Tx and catalytic activity of Au@Pt nanoflowers,a Ti3C2Tx/Au@Pt nanoflowers enzyme-free sensor was assembled for the ultrasensitive and rapid detection of H2O2 content.The prepared Ti3C2Tx was characterized by emission scanning electron microscopy and X-ray diffraction spectrometry.Results showed that the Ti3C2Tx material exhibited a unique accordion structure,while the Ti3C2Tx/Au@Pt are centered on Au particles and surrounded by Pt particles to form the surrouding dandelion structure.The cyclic voltammogram and time current curve of H2O2 on the Ti3C2Tx/Au@Pt modified electroded were studied.Results showed that the modified electrode presented good linear relationship for H2O2(0.03-1 100μmol/L),high sensitivity(detection limit:0.02μmol/L),good anti-interference and reproducibility.Compared with the traditional titration method,the new enzyme-free sensor could be more rapidly and accurately used in the detection of H2O2 in a complex environment.

关 键 词：二维过渡金属碳化物(MXene) Ti3C2Tx Au@Pt纳米花 H2O2 无酶传感器 

分 类 号：O657.1[理学—分析化学] TQ123.6[理学—化学]