单纳米颗粒在超微电极上的碰撞电化学分析:微电极和纳米管电极  

Collision electrochemical analysis of single nanoparticles on ultramicroelec⁃trodes:microelectrodes and nanopipette electrodes

作　　者：陈晨[1] 刘怿冲 肖博怀 李仁涵 CHEN Chen;LIU Yichong;XIAO Bohuai;LI Renhan(The State Key laboratory of Refractories and Metallurgy,Institute of Advanced Materials and Nanotechnology,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学耐火材料与冶金国家重点实验室,先进材料与纳米技术研究院,武汉430081

出　　处：《分析试验室》2022年第5期609-620,共12页Chinese Journal of Analysis Laboratory

基　　金：中国博士后基金(2018M642931)资助。

摘　　要：纳米颗粒的功能与其尺寸、电荷密度和表面化学性质等密切相关,因此研究其内在关系至关重要。近年来,基于纳米颗粒碰撞的电化学方法可以实现对单个纳米颗粒的尺寸、浓度和聚集状态快速检测,进而有效区分纳米颗粒的个体差异和探索单个颗粒活性-结构之间的关系。鉴于电极的尺寸、形状对单颗粒碰撞结果存在显著影响,本文将重点介绍不同颗粒(金属、半导体和绝缘体)与传统超微电极和纳米管电极之间的碰撞行为,并基于目前纳米电化学碰撞技术的不足,展望未来纳米电化学碰撞技术的发展方向。The function of nanoparticles is closely related to their size,charge density and surface chemistry,so it is very important to study their internal relationships.In recent years,electrochemical methods based on nanoparticle collisions can achieve rapid detection of the size,concentration,and aggregation state of individual nanoparticles,and can effectively distinguish individual differences in nanoparticles and explore the relationship between individual particle activity and structure.Given that the size and shape of the electrode have significant impact on the result of single particle collisions,this article will focus on the collision behavior between different particles(metals,semiconductors and insulators)and traditional ultra-micro electrodes and nanotube electrodes.Based on the current shortcomings of nanoelectrochemical collision technology,we will look forward to the future direction of nanoelectrochemical collision technology.

关 键 词：纳米颗粒 碰撞电化学 微电极 纳米管 

分 类 号：O651[理学—分析化学]