[BMIM][BF4]-MnO2@SS阳极的制备及对氧氟沙星废水的降解  

Fabrication of [BMIM][BF4]-MnO2@SS Anode and Removal of Ofloxacin Wastewater

作　　者：李绘[1] 张燕[1] 张玉琰 宋风娟 郦雪 王浩宇 曹晓强[1] 吕宪俊[1] LI Hui;ZHANG Yan;ZHANG Yuyan;SONG Fengjuan;LI Xue;WANG Haoyu;CAO Xiaoqiang;LYU Xianjun(College of Chemical and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Qingdao Beibao Marine Science&Technology Co.,Ltd.,Qingdao 266408,China)

机构地区：[1]山东科技大学化学与环境工程学院,青岛266590 [2]青岛贝宝海洋科技有限公司,青岛266408

出　　处：《材料导报》2020年第6期29-32,共4页Materials Reports

基　　金：国家自然科学基金(51674161);山东省政府公派留学项目~~

摘　　要：在1-丁基-3-甲基咪唑四氟硼酸盐([BMIM][BF4])的辅助下,通过一步水热法制备了不锈钢基二氧化锰电极([BMIM][BF4]-MnO2@SS),并利用SEM、XRD、电化学工作站对其表面形貌、晶型和电化学特征进行表征。结果表明,BF4可显著提高电极表面的致密性,促进MnO2在不锈钢表面的沉积,同时提高了电极的析氧电位并增强了其电化学活性。以[BMIM][BF4]-MnO2@SS为阳极、抛光不锈钢电极(SS)为阴极,在电压为3V条件下对20mg/L氧氟沙星废水进行电化学降解实验。实验结果表明,降解时间为30min时,氧氟沙星废水去除率可达89.00%,CODCr去除率达到72.56%,同时降解废水能耗降低了51.15%。另外,加速寿命实验表明,[BMIM][BF4]-MnO2@SS电极寿命为MnO2@SS电极的1.90倍,在降解氧氟沙星废水方面展现出优异的性能。Astainless steel-based manganese dioxide electrode([BMIM][BF 4]-MnO 2@SS)was prepared by hydrothermal method with the aid of 1-butyl-3-methylimidazolium tetrafluoroborate([BMIM][BF4]).The crystal morphology,structure,and electrochemical performance were characterized by SEM,XRD,electrochemical workstation,respectively.The results show that the addition of BF 4 significantly improves the compactness of the electrode surface.It promotes the deposition of MnO 2 on the surface of stainless steel,and increases the oxygen evolution potential and electrochemical activity of the electrode.Electrochemical removal experiments were carried out on 20 mg/L ofloxacin wastewater at a vol-tage of 3 V with[BMIM][BF4]-MnO2@SS as the anode and SS electrode as the cathode.The experimental results show that when the reaction time is 30 min,the removal rate of ofloxacin wastewater reaches 89.00%,and the COD Cr removal rate reaches 72.56%.At the same time,the energy consumption of degrading ofloxacin was reduced by 51.15%.In addition,the accelerated life test showed that the[BMIM][BF 4]-MnO 2@SS electrode life is 1.90 times than that of the MnO 2@SS electrode,and exhibited excellent performance in degrading the ofloxacin wastewater.

关 键 词：二氧化锰 离子液体 不锈钢 氧氟沙星废水 

分 类 号：TU528[建筑科学—建筑技术科学]