钛基金属氧化物涂层电极的制备及表征  

Preparation and Characterization of Titanium-based Metal Oxide Coated Electrodes

作　　者：张丽[1] 关江勇[1] 韩卫清[1] 王连军[1] 

机构地区：[1]南京理工大学环境与生物工程学院,江苏南京210094

出　　处：《兵工学报》2013年第11期1448-1453,共6页Acta Armamentarii

基　　金：兵器预先研究项目(2012)

摘　　要：为了对化工废水进行处理,以Ti/Sn-Sb电极为基础,采用刷涂热解法制备出掺杂Fe、Mn、Ni、Ru和Co等元素的钛基涂层电极。Sn、Sb和X(X代表掺杂元素)按照原子质量比为100∶10∶5的比例配制涂液,在475℃高温下煅烧。用SEM、XRD和电化学工作站等分析方法分析了改性电极的表面形貌、析氧电位值和使用寿命等因素。分析结果表明:阳极表面活性涂层易产生"龟裂"现象,影响电极的催化活性和使用寿命。与掺杂其他元素的改性电极相比,Ti/Sn-Sb-Mn电极的使用寿命最长,更难析出氧气,污染物更容易被氧化降解。On basis of Ti/Sn-Sb doped electrodes, the doping elements, including Fe, Mn, Ni, Ru and Co,are used to prepare the Ti-based electrodes by thermal brushing decomposition. The coating solution is prepared according to the atomic mass ratio of Sn, Sb and X（X representing a doping element） of 100 ： 10： 5. Then the electrodes are calcined at 475 ℃. The electrocatalytic performance of doped electrodes is studied. The results show that the thermal brushing decomposition could easily lead to a ＂cracking＂ phenomenon on the surface of the active coating, affecting the catalytic activity and lifetime of electrode. Compared with other doped electrodes, Ti/Sn-Sb-Mn doped electrode has the longest lifetime.

关 键 词：电化学工程 掺杂改性 钛基体 电催化活性 废水处理 

分 类 号：O646[理学—物理化学]