复合铂纳米电极制备及其对H2O2的测定  

Preparation of composite platinum nanoelectrodes and its application in determination of hydrogen peroxide

作　　者：冯俊燕 钱功明[1,2] 徐作行 程翔宇 丰明佳 FENG Junyan;QIAN Gongming;XU Zuohang;CHENG Xiangyu;FENG Mingjia(School of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081;Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan 430081)

机构地区：[1]武汉科技大学资源与环境工程学院,武汉430081 [2]冶金矿产资源高效利用与造块湖北省重点实验室,武汉430081

出　　处：《分析试验室》2020年第9期1040-1044,共5页Chinese Journal of Analysis Laboratory

基　　金：中央引导地方科技发展专项(湖北省科技厅)(2019ZYYD060)项目资助。

摘　　要：基于丁烷高温裂解析碳的原理,采用气相裂解沉积法将碳纳米颗粒沉积到石英纳米管尖端,制备出碳纳米电极,采用循环伏安法将邻苯二酚聚合膜与铂纳米颗粒沉积至该碳纳米电极上,制备出了复合铂纳米电极。探究了不同制备条件的影响,确定了最佳制备条件,研究了该电极对痕量H2O2的检测,结果表明,在20~1000μmol/L浓度范围内,该电极对H2O2具有良好的线性关系,检出限为0.471μmol/L。该电极同时具备纳米电极和纳米孔道,为多功能一体化微纳集成系统的制作提供了一种新思路。同时由于该电极的纳米级尺寸(50~90 nm),可对活体生物组织/细胞进行微创无痕的实时在线检测,为直接测定活体组织体液及组织环境中H2O2含量提供了新方法。Based on the principle of carbon deposition from butane pyrolysis at high temperature,the carbon nanoparticles were deposited on the tip of quartz nanotubes by vapor phase pyrolysis deposition method to prepare carbon nanoelectrodes,and the catechol polymer film and platinum nanoparticles were deposited on the carbon nanoelectrodes by cyclic voltammetry to prepare composite platinum nanoelectrodes. The effects of different preparation conditions were investigated. The optimal conditions for the preparation process were determined.The determination of trace H2O2 with the electrode was investigated. The results showed that the electrode had a good linear response to H2O2 in the concentration range of 20-1000 μmol/L with the limit of detection of 0. 471 μmol/L. Since the electrode had both nano-electrodes and nano-channels,it provided a new idea for the fabrication of a multi-functional integrated micro-nano integrated system. Due to the nano-scale( 50-90 nm) of the electrode,real-time on-line detection of living biological tissues/cells could be performed in a minimally invasive manner,which provided a new method for directly determining the H2O2 content in living body tissues and tissue environment.

关 键 词：纳米电极 电化学 H2O2 痕量检测 

分 类 号：O657.31[理学—分析化学] X832[理学—化学]