尿素电氧化反应——推荐一个电化学综合实验

Urea Electrooxidation Reaction:A Comprehensive Electrochemical Experiment

设计了一个基于尿素电氧化反应的综合化学实验,该实验采用三电极体系对镍电极上的尿素电氧化行为进行了详细的循环伏安测试,通过数据分析可求算出尿素分子的扩散系数、反应的传递系数、反应级数等重要的物理化学参数,将电催化研究前沿与本科课程中电分析和化学动力学及电解与极化作用等内容紧密结合;并采用两电极体系构建尿素辅助电解制氢装置模拟实际应用,能够充分培养学生运用基础知识解决科研问题的能力,体现了“基础知识–理论研究–实际应用”的实验教学思维模式,适合作为面向高年级本科生的综合实验教学课程。

The urea oxidation reaction(UOR)was comprehensively studied using electrochemical method,including detailed cyclic voltammetry analyses of the UOR behavior on Ni in a standard three-electrode system.The data were analyzed to extract important physical and chemical parameters of the reaction such as the diffusion coefficient,transfer coefficient,and reaction order.This experiment combined current electrocatalysis research with undergraduate electroanalysis courses and the kinetics of chemical and electrochemical reactions.A two-electrode system was used to construct a urea-assisted electrolyzer for hydrogen production to demonstrate the practical application of this system.This experiment was designed to encourage undergraduate students to use their basic knowledge to solve practical problems and stimulate their enthusiasm for scientific research.