修饰型TiO2锡锑电极的制备及其在钻井废水处理中的应用  

Preparation of Sb-doped SnO2 electrode with titanium dioxide nanotubes on Ti substrate and its application in drilling wastewater treatment

作　　者：张瑞滕 刘川 陈进富[1] 郭春梅[1] 郑永菊 孔繁鑫 ZHANG Ruiteng;LIU Chuan;CHEN Jinfu;GUO Chunmei;ZHENG Yongju;KONG Fanxin(Beijing Key Laboratory of Oil&Gas Pollution Control,State Key Laboratory of Heavy Oil Processing,China University of Petroleum(Beijing),Beijing 102249,China;Zhejiang Province Institute of Architectural Design and Research,Hangzhou 310007,China)

机构地区：[1]中国石油大学(北京),油气污染防治北京市重点实验室,重质油国家重点实验室,北京102249 [2]浙江省省直建筑设计院,杭州310007

出　　处：《环境工程学报》2020年第2期372-380,共9页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51708556);中国石油大学(北京)青年拔尖人才项目(2462019BJRC004);自然资源部页岩气资源勘查重点实验室开放课题(KLSGE-MLR-201903)。

摘　　要：为了解决传统锡锑电极电催化氧化效果偏低、涂层易脱落的问题,使用阳极氧化法,在钛基底表面制备垂直生长的二氧化钛纳米管(TiO2-NTs),然后在此基底上采用电沉积法制备出锡锑电极(TiO2-NTs/SnO2-Sb)。结果表明,相比没有二氧化钛纳米管的锡锑电极(Ti/SnO2-Sb),TiO2-NTs/SnO2-Sb电极的析氧电位从1.9 V增加到2.03 V,电极具有较高的羟基自由基生成能力和更高的电流效率,促进了苯酚的矿化。TiO2-NTs/SnO2-Sb电极对实际钻井废水具有较好的脱色效果,COD去除率高达81.4%,且能够有效地改善阳极的"中毒效应"。This study aimed to address the low electro-catalytic oxidation effect and coating falling off easily of traditional Sb-doped SnO2 electrode. The vertically grown titanium dioxide nanotubes(TiO2-NTs) structure was first formed on the Ti plate by anodization, then the Sb-doped SnO2 electrode(TiO2-NTs/SnO2-Sb) was prepared on this modified Ti plate by electrodeposition. The results showed that compared to the Sb-doped SnO2 electrode without titanium dioxide nanotubes(Ti/SnO2-Sb) on the Ti plate, the oxygen evolution potential of TiO2-NTs/SnO2-Sb electrode increased from 1.9 V to 2.03 V, which contributed to the phenol mineralization enhancement due to its high capacity for hydroxyl radicals generation and higher current efficiency. The TiO2-NTs/SnO2-Sb electrode can completely remove the color of the drilling wastewater, and the COD removal rate was as high as 81.4%. In addition, the "Poisoning effect" of the anode was alleviated during the treatment of drilling wastewater.

关 键 词：电化学氧化 二氧化钛纳米管 二氧化锡电极 羟基自由基 

分 类 号：X703.1[环境科学与工程—环境工程]