【摘要】 利用阳极氧化法和电化学沉积法，在传统Ti/PbO₂电极中引入二氧化钛纳米管（TiO₂NTs）和导电聚苯胺（PANI）新型复合中间层，并在PbO₂表层掺杂改性碳纳米管（CNTs），成功制备了Ti/TiO₂NTs/PANI/PbO₂-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：TiO₂NTs/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PbO₂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/PbO₂提升46.50%，电极加速寿命延长230%。在20 mA/cm²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。更多还原

【Abstract】 A novel composite interlayer of titanium dioxide nanotubes （TiO₂NTs） and polyaniline （PANI） was introduced into the traditional Ti/PbO₂ electrode by anodic oxidation and electrochemical deposition，and modified carbon nanotubes （CNTs） were doped on the surface of PbO₂ to prepare the Ti/TiO₂NTs/PANI/PbO₂-CNTs electrode for the pretreatment of water seal water of gas pipeline.The experimental results show that the TiO₂NTs/PANI composite interlayer can reduce the corrosion rate of electrode and increase the electrode activity，and CNTs surface doping can refine the PbO₂ crystal particles，enlarge the active surface area and improve the catalytic activity of the electrode.The hydroxyl radical generation amount of Ti/TiO₂NTs/PANI/PbO₂-CNTs electrode is 46.50% higher than that of Ti/PbO₂，and the accelerated life of the electrode is increased by 230%.After 50 min treatment at 20 mA/cm² 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.更多还原