钛基金属氧化物阳极的制备及其对有机物废水处理的研究

利用DSA(形稳阳极)电极改性来使电化学具备其他支撑功能.使用电化学氧化方法对模拟苯酚废水进行了降解,制备了锰锑掺杂的钛基Sn O2电极,以期能延长电极寿命,提高降解效率.通过SEM(扫描电子显微镜)、XRD(X射线衍射)、循环伏安曲线、强化寿命测试等方法,对自制电极进行表征和分析,并对影响因素进行了系统研究.结果表明,改性后的DSA电极活性和稳定性有大幅提高,析氧电位达2.3 V,加速寿命达42 h,在最佳条件下处理质量浓度为100 mg/L的苯酚废水,去除率在8 h后达到89.26%.

Study on the preparation of titanium based metal oxide anodes and the treatment of organic wastewaters

Our purpose is to modify the anode according to the different requirements,the electrode structure can be modified to endue electrochemical method other supporting functions for more application.Our research aims to degrade phenol in the wastewater by a high efficient electrochemical method.In this paper,Mn and Sb doped Ti-based SnO₂ (Ti/MnO₂/SnO₂-Sb) electrode was prepared.Its degradation ability towards organic pollutants was improved and its life time was prolonged via optimizing the electrode preparation process.The as-prepared Ti/MnO₂/SnO₂-Sb anode was characterized and analyzed using SEM,XRD,cyclic voltammetry,and enhanced life test.The factors affecting the degradation of organic compounds were systematically studied.The results show that the activity and stability of the doped DSA electrode are greatly improved,compared to those of the unmodified electrode.The oxygen evolution potential of the doped DSA electrode was up to 2.3 V and its accelerated life was up to 42 h.For the treatment of wastewater containing 100 mg/L phenol under the optimal conditions,the removal rate reached 89.26% after 8 h.