摘要
为给电极的制备及水杨酸的降解提供一定理论依据,采用电沉积法制备了Ni基Ag-Cu合金电极并应用于水杨酸的降解过程。对不同Ag-Cu物质的量比例的Ni基Ag-Cu合金电极的电化学性能进行了考察,探索了在板间距、外加电压、电解时间等试验条件相同时,不同电解液浓度对水杨酸降解率的影响,比较了电化学氧化降解和声电协同降解效果。结果表明:在温度、电流密度、电极间距、电极材料等试验条件相同,当电沉积液n_(Ag)∶n_(Cu)=8∶2时,Ni基Ag-Cu合金电极表面形貌良好,对水杨酸的降解率最高。Na_(2)SO_(4)作为电解质时最佳电解液浓度为1.064 g/L,此时对水杨酸的电化学氧化降解率为98.01%,而声电协同降解率为99.89%,协同效应下降解完全程度更高。
In order to provide a theoretical basis for the preparation of electrode and the degradation of salicylic acid Ni-based Ag-Cu alloy electrodes were prepared by electrodeposition method,which was further applied in the degradation process of salicylic acid.The electrochemical properties of the Ni-based Ag-Cu alloy electrodes with different molar ratios of Ag-Cu were studied.Under the same plate spacing,plus voltage,electrolysis time,the effects of electrolyte concentration on the degradation rate of salicylic acid were explored and the electrochemical oxidation degradation and ultrasound-assisted electrochemical synergetic degradation rate were compared.Results showed that under the same temperature,current density,electrode materials and distance between the anode and the cathode,when n_(Ag)∶n_(Cu) in the electrodeposition solution was equal to 8∶2,the surface morphology of Ni-based Ag-Cu alloy electrode is good,and the degradation rate of salicylic acid was the highest.The most suitable Na_(2)SO_(4) electrolyte concentration was 1.064 g/L.Under this condition,the degradation rate of salicylic acid was 98.01%,and the ultrasound-assisted electrochemical oxidation rate was 99.89%,indicating that the degradation rate of salicylic acid under the synergy effect was higher.
作者
宋秀丽
闫瑞景
刘宪
芦宝平
SONG Xiu-li;YAN Rui-jing;LIU Xian;LU Bao-ping(Department of Chemistry,Taiyuan Normal University,Jinzhong 030619,China;Taiyuan Teyida Technology Co.,Ltd.,Taiyuan 030024,China)
出处
《材料保护》
CAS
CSCD
2021年第3期100-105,共6页
Materials Protection
基金
山西省应用基础研究计划项目(201901D111292,201601D102010)
山西省高等学校教学改革创新项目(J2020278)
太原师范学院教学改革项目(JGLX1931)资助。
关键词
电沉积法
Ag-Cu合金电极
电化学氧化降解
声电协同降解
水杨酸
electrodeposition method
Ag-Cu alloy electrode
electrochemical oxidation degradation
ultrasound-assisted electrochemical synergetic degradation rate
salicylic acid
