脉冲电沉积SnO_(2)-Sb电极的制备及其对苯酚的降解性能  

Preparation of SnO_(2)-Sb electrode by pulse electrodeposition and their phenol degradation characteristics

作　　者：陈仕刚 于超凡 张瑞滕 孔繁鑫 孙广东 CHEN Shigang;YU Chaofan;ZHANG Ruiteng;KONG Fanxin;SUN Guangdong(CURG-Ecology and Environment Protection Engineering Co.,Ltd.,Wuhan 430056,China;College of Chemical Engineering and Envionment,China University of Petroleum(Beijing),Beijing 102249,China)

机构地区：[1]中城乡生态环保工程有限公司,湖北武汉430056 [2]中国石油大学(北京)化学工程与环境学院,北京102249

出　　处：《化工环保》2025年第2期195-201,共7页Environmental Protection of Chemical Industry

基　　金：中国交通建设集团有限公司青年创新项目(2021-ZJKJ-QNCX12)。

摘　　要：采用脉冲电沉积(PED)法制备了锡锑(SnO_(2)-Sb)电极,考察了脉冲频率、脉冲电流密度和占空比对SnO_(2)-Sb电极结构特性、析氧电位和苯酚降解性能的影响,优化了电极制备工艺参数,并比较了该电极与直流电沉积(DCED)电极的·OH产生情况。实验结果表明:适宜的SnO_(2)-Sb电极制备工艺为脉冲频率50 Hz、脉冲电流密度62.5 mA/cm^(2)和占空比0.1,在该条件下所制备的SnO_(2)-Sb电极晶粒尺寸理想、析氧电位较高,具有优异的苯酚降解性能,反应3 h后,苯酚去除率为83.5%;与DCED法制备的SnO_(2)-Sb电极相比,PED法所制备的SnO_(2)-Sb电极产生·OH的速率更快、数量更多、性能更优异。Tin-antimony(SnO_(2)-Sb)electrode was prepared by using pulse electrodeposition(PED).The effects of pulse frequency,pulse current density,and duty cycle on SnO_(2)-Sb electrode structure,oxygen evolution potential,and phenol degradation performance were investigated.The preparation process parameters of the electrode were optimized,and the·OH production between the electrode and the direct current electrodeposition(DCED)electrode was compared.The results show that the suitable preparation process of the SnO_(2)-Sb electrode is as follows:pulse frequency of 50 Hz,current density of 62.5 mA/cm^(2),and duty cycle of 0.1.The SnO_(2)-Sb electrode prepared under these conditions exhibits ideal grain size,high oxygen evolution potential,and excellent phenol degradation performance.After 3 h reaction,the phenol removal rate is 83.5%.Compared with the SnO_(2)-Sb electrode prepared by the DCED method,the SnO_(2)-Sb electrode prepared by this method can produce·OH faster,with more quantity and better performance.

关 键 词：脉冲电沉积 锡锑电极 羟基自由基 苯酚 

分 类 号：X703[环境科学与工程—环境工程]