电化学沉积法制备纳米铂催化剂的定量分析

Quantitative Analysis of Nano-Pt Catalysts Prepared by Electrochemical Deposition Method

电化学沉积法制备的催化剂广泛应用于电催化反应中,人们通过称重法和法拉第定律计算法对电化学沉积催化剂进行定量分析,并且取得了一定进展。然而,这些方法存在一定的局限性,如准确度低、条件苛刻等。本实验通过分光光度法对电沉积催化剂、进行间接的定量分析,具有操作简单、适用范围广、精度高等特点。本实验不但强化了本科生对电化学合成知识的了解,而且加强了本科生对定量分析方法的训练,有利于培养学生扎实的化学操作技能以及多学科交叉思维。

Electrochemical deposition method preparation of catalysts is widely used in electrocatalytic reactions.There are some progresses achieved in quantitative analysis of electrochemical deposition catalysts,e.g.,gravimetric method and Faraday s law calculations.However,these methods have some shortages,such as low accuracy,harsh conditions,and so on.Herein,a simple but efficient method to quantitatively analysis the electrodeposited nano-Pt catalysts by using the spectrophotometry was reported,which had the advantages of simple operation,high accuracy,and wide applications.This experiment not only strengthened undergraduates understanding of electrochemical synthesis,but also improved their skills in quantitative analysis methods.Furthermore,the proposed work could greatly cultivate students interest in Chemistry and creative epistemology.