文献类型：期刊文献

英文题名：Tracking motion trajectories of individual nanoparticles using time-resolved current traces

作者：Ma, Wei[1];Ma, Hui[1];Chen, Jian-Fu[2];Peng, Yue-Yi[1];Yang, Zhe-Yao[1];Wang, Hai-Feng[2];Ying, Yi-Lun[1];Tian, He[1];Long, Yi-Tao[1]

机构：[1]East China Univ Sci & Technol, Inst Fine Chem, Key Lab Adv Mat, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Res Inst Ind Catalysis, State Key Lab Chem Engn, Ctr Computat Chem, Shanghai, Peoples R China

年份：2017

卷号：8

期号：3

起止页码：1854

外文期刊名：CHEMICAL SCIENCE

收录：;EI(收录号：20171003408572);WOS:【SCI-EXPANDED(收录号:WOS:000395906900017)】；

基金：This research was supported by the Science Fund for Creative Research Groups (Grant 21421004), 973 Program (Grants 2013CB733700 and 2014CB748500), National Natural Science Foundation of China (Grants 21305045), and Fundamental Research Funds for the Central Universities (Grant 222201313004).

语种：英文

外文关键词：Electrochemical oxidation - Electrochemistry - Motion analysis - Nanoparticles - Intelligent systems

摘要：Single nanoparticle (NP) electrochemical measurements are widely described, both theoretically and experimentally, as they enable visualization of the electrochemical signal of a single NP that is masked in ensemble measurements. However, investigating the behavior of individual NPs using electrochemical signals remains a significant challenge. Here we report experiments and simulations demonstrating that multiple distinct motion trajectories could be discerned from time-resolved current traces by dynamic Monte Carlo simulations. We show that continuous monitoring and quantification of electrochemical oxidation of individual AgNPs using a low-noise electrochemical measurement platform produce significantly distinguished current traces due to the size-dependent motions of AgNPs. Our findings offer a view of the electrochemical signals of individual NPs that are largely different from that in the literature, and underscore the significance of motion behaviors in single NP electrochemistry.