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Enhanced treatment performance of phenol wastewater by electrochemical reactor with MnO x /Ti membrane electrode modified with Sb-SnO 2 interlayer People's Republic of China
Journal of Materials Science: Materials in Electronics ( IF 2.8 ) Pub Date : 2020-09-23 , DOI: 10.1007/s10854-020-04441-0
Xiaowei Fan , Xiaoping Liang , Zenghua Zhao , Di Zhang , Hongying Liu , Yuanyang Zhang , Hong Wang , Jianxin Li

Sb-SnO2/Ti electrode membrane was prepared by loading Sb-SnO2 polymer precursor on the original Ti substrate electrode membrane, then MnOx sol was coated on the surface of Sb-SnO2/Ti to obtain MnOx/Sb-SnO2/Ti composite electrode membrane via sol–gel method. Compared with MnOx/Ti, the new crystal form and solid solution were identified in MnOx/Sb-SnO2/Ti due to the presence of Sb-SnO2 interlayer, which was beneficial to improve the electrochemical performance of MnOx/Ti. In particular, the specific surface area of MnOx/Ti was increased by inserting Sb-SnO2 interlayer. Electrocatalytic membrane reactor (ECMR) is assembled with the electrode membrane as the anode and the stainless-steel mesh as the cathode for phenolic wastewater treatment. pH value and Sb-SnO2-loading amount had great effect on the energy consumption of ECMR. When the current density, residence time and Sb-SnO2 loading were 0.9 mA/cm2, 15 min and 3.4 wt%, the phenol and COD degradation rate of ECMR with MnOx/Sb-SnO2/Ti reached 98.98% and 89.38%, whereas were 80.56% and 71.12% in case of MnOx/Ti, respectively.



中文翻译:

Sb-SnO 2中间层修饰的MnO x / Ti膜电极电化学反应器提高苯酚废水的处理性能

通过将Sb-SnO 2聚合物前驱体装载到原始的Ti基体电极膜上制备Sb-SnO 2 / Ti电极膜,然后在Sb-SnO 2 / Ti表面涂覆MnO x溶胶以获得MnO x / Sb-SnO 2 / Ti复合电极膜通过溶胶-凝胶法。与MnO x / Ti相比,由于存在Sb-SnO 2中间层,因此在MnO x / Sb-SnO 2 / Ti中鉴定出新的晶型和固溶体,有利于提高MnO x / Ti的电化学性能。。特别是MnO x的比表面积通过插入Sb-SnO 2中间层来增加/ Ti 。电催化膜反应器(ECMR)以电极膜为阳极,不锈钢网为阴极,用于酚醛废水处理。pH值和Sb-SnO 2的负载量对ECMR的能耗有很大影响。当电流密度,停留时间和Sb的SnO 2装载分别为0.9毫安/厘米2,15分钟,3.4重量%,ECMR的苯酚和COD降解率的MnO X /锑的SnO 2 / Ti的达到98.98%和89.38 %,而在MnO x / Ti的情况下分别为80.56%和71.12%。

更新日期:2020-09-23
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