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以纯铜片为基材,利用复合电镀法制得PTFE修饰的Cu-PTFE(聚四氟乙烯)复合电极,并作为阴极将水杨醛电还原为水杨醇.分别测定了Cu-PTFE修饰电极在水杨醛电解液中的循环伏安(CV)、Tafel极化曲线和交流阻抗(EIS)等电化学参数以及电化学过程的相关数据.结果表明,Cu-PTFE修饰电极对水杨醛的电还原有良好的催化活性,依据电化学过程的研究结果推测,水杨醛在修饰电极上的电化学过程受电子迁移和浓差扩散的混合控制,其电还原过程的转化率达80.36%.结合FT-IR和1HNMR对水杨醛电还原得到的产物水杨醇进行表征,进一步表明Cu-PTFE修饰电极对水杨醛电还原制备水杨醇具有实际的应用价值.
Using pure copper as substrate, PTFE-modified Cu-PTFE composite electrode was prepared by composite electroplating method and the salicylaldehyde was reduced to salicyl alcohol as the cathode. The effects of Cu-PTFE modified electrode on Salicylaldehyde electrolyte cyclic voltammetry (CV), Tafel polarization curve and electrochemical impedance spectroscopy (EIS) and other electrochemical parameters and electrochemical process data.The results show that the Cu-PTFE modified electrode salicylaldehyde electricity According to the results of electrochemical process, the electrochemical process of salicylaldehyde on the modified electrode was controlled by the mixing of electron transfer and concentration diffusion, and the conversion rate of the electroreduction reached 80.36%. FT-IR and 1HNMR were used to characterize the salicylaldehyde obtained from the salicylaldehyde reduction. The results showed that the Cu-PTFE modified electrode has practical application value for salicylaldehyde reduction by salicylaldehyde.