Ti/TiO_(2)NTs/PANI/PbO_(2)-CNTs电极的制备及煤气管道水封水的预处理  

Preparation of Ti/TiO_(2) NTs/PANI/PbO_(2)-CNTs electrode and pretreatment of water seal water of gas pipeline

作　　者：罗纲 雷国元[1] 周达 郭亚群 邵震 王巧稚[1] LUO Gang;LEI Guoyuan;ZHUO Da;GUO Yaqun;SHAO Zhen;WANG Qiaozhi;无(College of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Jiangsu Bada Science and Technology Inc.,Yixing 214200,China;Hunan Academy of Building Reseasrch Co.Ltd.,Changsha 410011,China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]江苏八达科技股份有限公司,江苏宜兴214200 [3]湖南省建筑科学研究院有限责任公司,湖南长沙410011

出　　处：《化工环保》2022年第2期184-189,共6页Environmental Protection of Chemical Industry

基　　金：国家自然科学基金项目(41701624)。

摘　　要：利用阳极氧化法和电化学沉积法,在传统Ti/PbO_(2)电极中引入二氧化钛纳米管(TiO_(2)NTs)和导电聚苯胺(PANI)新型复合中间层,并在PbO_(2)表层掺杂改性碳纳米管(CNTs),成功制备了Ti/TiO_(2)NTs/PANI/PbO_(2)-CNTs电极,并将其用于煤气管道水封水的预处理。实验结果表明:TiO_(2)NTs/PANI复合中间层可降低电极腐蚀速率,提高电极活性;CNTs表面掺杂可细化PbO_(2)晶体颗粒,增大电极活性表面积,提高电极催化性能。该电极的·OH产生量较Ti/PbO_(2)提升46.50%,电极加速寿命延长230%。在20 mA/cm^(2)电流密度下处理水封水50 min后可显著提高其可生化性,将其以1∶1体积比与原生化进水混合排入生化池,对废水的可生化性无明显影响。A novel composite interlayer of titanium dioxide nanotubes (TiO_(2)NTs) and polyaniline (PANI) was introduced into the traditional Ti/PbO_(2)electrode by anodic oxidation and electrochemical deposition,and modified carbon nanotubes (CNTs) were doped on the surface of PbO_(2)to prepare the Ti/TiO_(2)NTs/PANI/PbO_(2)-CNTs electrode for the pretreatment of water seal water of gas pipeline.The experimental results show that the TiO_(2)NTs/PANI composite interlayer can reduce the corrosion rate of electrode and increase the electrode activity,and CNTs surface doping can refine the PbO_(2)crystal particles,enlarge the active surface area and improve the catalytic activity of the electrode.The hydroxyl radical generation amount of Ti/TiO_(2)NTs/PANI/PbO_(2)-CNTs electrode is 46.50% higher than that of Ti/PbO_(2),and the accelerated life of the electrode is increased by 230%.After 50 min treatment at 20 mA/cm^(2)of current density,the biodegradability of the water seal water is significantly improved,and when it is mixed with the original biochemical influent in a volume ratio of 1∶1 and discharged into the biochemical tank,the biodegradability of the wastewater is not obviously effected.

关 键 词：电催化氧化 聚苯胺 碳纳米管 水封水 可生化性 二氧化钛纳米管 

分 类 号：X505[环境科学与工程—环境工程]