微波合成SnO_(2)/活性炭粒子电极及降解4-氯酚  

Microwave Synthesis of SnO_(2)/Activated Carbon Particle Electrode and Degradation of 4-Chlorophenol

作　　者：谢树明 覃琴 张振华 李媚 XIE Shuming;QIN Qin;ZHANG Zhenhua;LI Mei(School of Chemistry and Chemical Engineering,Guangxi University for Nationalities,Guangxi Key Laboratory for Polysaccharide Materials and Modifications;Key Laboratory of Chemical and Biological Transformation Process of Guangxi Higher Education Institutes,Guilin 541006,China)

机构地区：[1]广西民族大学化学化工学院广西多糖材料与改性重点实验室 [2]广西高校化学与生物转化过程新技术重点实验室,广西南宁530008

出　　处：《水处理技术》2021年第2期32-37,共6页Technology of Water Treatment

基　　金：国家自然科学基金(21466009);广西生物多糖分离纯化及改性研究平台建设项目(桂科ZY18076005);广西民族大学研究生科研创新项目(gxun-chxzs2018050);广西民族大学2018年实验技术创新与实验室管理研究项目(民大(2018)307);2019年大学生创新创业训练项目(20191060813)。

摘　　要：以甘蔗渣为原料,KOH为活化剂,SnCl_(4)·5H_(2)O为修饰剂,采用微波法制备了SnO_(2)/活性炭粒子电极,对其进行了表征,使用线性伏安法和循环伏安法分析了粒子电极的电化学性能,以4-氯酚为目标污染物进行电化学降解实验,对降解机理进行了探讨。结果表明,SnO2成功地负载于粒子电极表面。在微波功率640 W、微波时间15 min、质量分数10%的KOH、质量浓度200 g/L的SnCl_(4)·5H_(2)O条件下制备所得粒子电极显示出最高的电子传导系数和最大的电化学活性面积。在以DSA板作阳极,钛板作阴极的三维电极反应器中,电解4-氯酚的质量浓度500 mg/L的模拟废水150 min,4-氯酚去除率达到96.15%。Using bagasse as raw material,KOH as activator,SnCl_(4)·5 H_(2)O as modifier,SnO_(2)/activated carbon particle electrode was prepared by microwave method,and it was characterized.The electrochemical properties of the particle electrodes were analyzed by linear voltammetry and cyclic voltammetry.The electrochemical degradation experiments of 4-chlorophenol was carried out,and the degradation mechanism was discussed.The results showed that,SnO_(2) was successfully loaded on the surface of the particle electrode,the particle electrodes prepared under the conditions of microwave power of 640 W,microwave time of 15 min,KOH mass fraction of 10%and SnCl_(4)·5 H_(2)O mass concentration of 200 g/L showed the highest electron conductivity and the largest electrochemical active area.In a three-dimensional electrode reactor with DSA plate as anode and titanium plate as cathode,electrolysis of simulated wastewater with a mass concentration of 500 mg/L of 4-chlorophenol for 150 min,the removal rate of 4-chlorophenol reached 96.15%.

关 键 词：粒子电极 4-氯酚 电化学降解 

分 类 号：X703.1[环境科学与工程—环境工程]