Quantitative Analysis of Reaction Kinetics in Scanning Electrochemical Microscopy
HAN Lian-Huan1**, NAN Wen-Jing2, WANG Yang2
1. Department of Mechanical and Electrical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China; 2. College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
Abstract Scanning electrochemical microscopy (SECM) is a microelectrochemical research method that has evolved by combining electrochemical detection technology, ultramicroelectrode technology, and three-dimensional manipulation technology. Its significant advantages lie in its high temporal resolution, spatial resolution, and unique chemical reaction activity resolution. SECM is widely applied in the fields of electrode process dynamics, electrochemical imaging, electrochemical micro/nano manufacturing, electroanalysis, and biochemistry. However, how to analyze experimental data to obtain quantitative and reliable kinetic data for the studied interfacial reactions is not clearly described in many textbooks and teaching processes. This article primarily introduces several commonly used methods for quantitative analysis of kinetic parameters in SECM experiments. Meanwhile, a nonlinear fitting method based on the combined use of COMSOL and MATLAB is proposed, which can rapidly obtain the kinetic constants of reactions, aiming to assist researchers and students engaged in related studies.
HAN Lian-Huan, NAN Wen-Jing, WANG Yang. Quantitative Analysis of Reaction Kinetics in Scanning Electrochemical Microscopy[J]. Chinese Journal of Chemical Education, 2024, 45(14): 114-118.
