钛基金属氧化物电极制备及降解甲基橙研究

Preparation and electrocatalytic oxidation of Ti-based metal-oxide electrodes for methyl orange

采用高温热氧化法制备Ti/Sn-Sb,Ti/Sn-Sb-Mn,Ti/Sn-Sb-Co,Ti/Sn-Sb-Pb氧化物电极,通过扫描电镜、析氧电位测定、加速寿命试验等方法考查各电极的表面形貌、析氧电位和使用寿命,并对四种电极降解偶氮染料甲基橙溶液的情况进行比较。结果表明Ti/Sn-Sb-Pb氧化物电极具有较长的使用寿命和较好的电催化氧化活性。

Ti/Sn-Sb,Ti/Sn-Sb-Mn, Ti/Sn-Sb-Co, Ti/Sn-Sb-Pb electrodes were prepared by thermal oxidation. Essential characterizations were conducted including SEM,linear sweep voltammetry and accelerated lifetime test, and their electric catalytic oxidation properties for pollutant degradation were tested using methyl orange as a model. The results showed that the Ti/Sn-Sb-Pb electrode exhibited the preferable lifetime and electro-catalytic activity.