稀土铈掺杂锡锑阳极制备及降解苯酚的研究

Preparation of Ce-Doped Ti/Sn-Sb Anode and Catalytic Oxidation of Phenol

摘要:

采用电沉积-热分解法制备了稀土铈掺杂锡锑阳极，利用SEM、EMPA、XRD、动电位扫描和循环伏安测定，研究了电极涂层形貌、元素组成分布、结构和选择催化性。结果表明：电极的电极涂层结构致密，氧化物分布均匀，基体覆盖完全；电极有较高的析氧电位，对苯酚有较好的催化降解作用，在对苯酚的降解测试中，苯酚的去除率达到100%，溶液化学耗氧量（COD）的降解率为97.7%，具有深度处理含酚废水的能力。

Abstract:

The Ti/Sn-Sb anode doped with Ce was prepared by an electro-deposition and thermal oxidation method. The microstructure and morphology of the anode were examined by SEM, EMPA and XRD, and its catalytic selectivity was studied by potentiodynamic polarization and cyclic voltammetry. The result shows that the anode coating has a compact texture, whose oxide distributes uniformly with a complete coverage of the Ti matrix. Electrochemical performance test shows that the anode has high oxygen evolution potential and good catalysis for the oxidative degradation of phenol. In the simulative test of phenol degradation, the removal rates of phenol and COD (chemical oxygen demand) reach 100% and 97.7%, respectively. Therefore, the Ti/Sn-Sb anode doped with Ce possesses high ability of removing the phenol in waste water.