Fabrication of [BMIM][BF4]-MnO2@SS Anode and Removal of Ofloxacin Wastewater
LI Hui1, ZHANG Yan1, ZHANG Yuyan1, SONG Fengjuan1, LI Xue1, WANG Haoyu2, CAO Xiaoqiang1, LYU Xianjun1
1 College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China; 2 Qingdao Beibao Marine Science & Technology Co., Ltd., Qingdao 266408, China
Abstract: Astainless steel-based manganese dioxide electrode ([BMIM][BF4]-MnO2@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 BF4 significantly improves the compactness of the electrode surface. It promotes the deposition of MnO2 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 CODCr 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][BF4]-MnO2@SS electrode life is 1.90 times than that of the MnO2@SS electrode, and exhibited excellent performance in degrading the ofloxacin wastewater.
1 Cao D M, Zuo X, Yuan B Q, et al. Technology of Water Treatment, 2018 (3), 74 (in Chinese). 曹冬梅, 左翔, 袁丙青, 等. 水处理技术, 2018 (3), 74. 2 Kools S A E, Moltmann J F, Knacker T. Regulatory Toxicology & Pharmacology, 2008, 50 (1), 59. 3 Deng L W, Peng Z B, Tang Y, et al. Chinese Journal of Enviromentalence, 1998 (6), 66 (in Chinese). 邓良伟, 彭子碧, 唐一, 等. 环境科学, 1998 (6), 66. 4 Chum H L, Koch V R, Miller L L, et al. Journal of the American Chemical Society, 1975, 97 (11), 3264. 5 Zhang J, Shi Y, Ding Y, et al. Nano Letters, 2016, 16 (11), 7276. 6 Zhao G, Cui X, Liu M, et al. Environmental Science & Technology, 2009, 43 (5), 1480. 7 Dang K, Wang T, Li C C, et al. Engineering, 2017, 3 (3), 285. 8 Zhong C W, Mei W J, Li D, et al. Materials Review B: Research Papers, 2015, 29 (6), 10 (in Chinese). 钟盛文, 梅文捷, 李栋, 等. 材料导报:研究篇, 2015, 29 (6), 10. 9 Lei Y, Zhao G, Zhang Y, et al. Environmental Science & Technology, 2010, 44 (20), 7921. 10 Lin W C, Chen C H, Tang H Y, et al. Applied Catalysis B Environmental, 2013, 140-141 (2), 32. 11 Bao L Y. Electrochemical behavior research of refractory organics in wastewater on insoluble electrode of stainless steel. Beijing University of Chemical Technology, China, 2011 (in Chinese). 鲍立垠. 废水中难降解有机物在不锈钢不溶性电极上电化学行为研究. 博士学位论文, 北京化工大学, 2011. 12 Li T, Li Y M, Liu X L, et al. Materials Review, 2017, 31 (S2), 60 (in Chinese). 李桃, 李艳梅, 刘小林, 等. 材料导报, 2017,31 (专辑30), 60. 13 Sato K. Journal of Physical Chemistry B, 2018, 122 (27), 7009. 14 Earle M J, Seddon K R. Pure & Applied Chemistry, 2000, 72 (7), 1391. 15 Xiao X, Liu S, Liu X, et al. Chinese Journal of Analytical Chemistry, 2005, 33 (4), 569 (in Chinese). 肖小华,刘淑娟,刘霞,等.分析化学,2005, 33 (4), 569. 16 Poole C F. Encyclopedia of Separation Science, 2007, 302 (5646), 1. 17 Yu L, Xue J, Wang L, et al. Rare Metal Materials & Engineering, 2017, 46 (7), 1833. 18 Wang Y, Wu X, Li Y, et al. Solid State Electronics, 2004, 48 (5), 627. 19 Hu B, Chen C, Fang Y, et al. Industrial Water Treatment, 2018 (1), 44 (in Chinese). 胡斌, 陈翠, 方燕, 等. 工业水处理, 2018 (1), 44. 20 Xie R Z, Meng X Y, Sun P, et al. Applied Catalysis B: Environmental, 2017, 203, 515. 21 Radjenovic J, Sedlak D L. Environmental Science & Technology, 2015, 49 (19), 11292. 22 Zhu X P, Ni J R, Wei J J, et al. Journal of Hazardous Materials, 2010, 184 (1-3), 493.
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2020, Vol. 34 
