以还原态TiO₂纳米管和纳米金刚石为电极中间层和催化层掺杂改性剂，通过电沉积法制备了新型PbO₂电极（Ti/TiO₂-RNTs/Sb-SnO₂/PbO₂-ND）。合成的电极表面主要为β-PbO₂晶体，晶粒尺寸是17 nm。电化学分析测试表明，还原态TiO₂纳米管中间层和纳米金刚石掺杂改性减少了电极电荷转移电阻，增加了电极的析氧电位和电化学活性面积。对苯达松的降解发现，与其他电极相比，Ti/TiO₂-RNTs/Sb-SnO₂/PbO₂-ND电极的催化活性更高、平均能耗更少。氯离子的存在可显著提升电催化氧化效率，10 mmol/L的Cl^-可将COD的去除率从49%提升到69%。此外，Ti/TiO₂-RNTs/Sb-SnO₂/PbO₂-ND电极有着良好的催化稳定性和较长的使用寿命。

A new Ti/TiO₂-RNTs/Sb-SnO₂/PbO₂-ND electrode is prepared by electrodeposition technique using electrochemically reduced titanium dioxide nanotubes and nano-diamond as the interlayer and dopant,respectively.Results show that the crystals on the surface of the electrode are almost β-PbO₂ with grain size of 17 nm.Electrochemical analysis results show that the reduced titanium dioxide nanotubes and nano-diamond render PbO₂ electrode with less charge transfer resistance,higher oxygen evolution overpotential and larger electrochemical active area.Degradation experiments for bentazon indicate that Ti/TiO₂-RNTs/Sb-SnO₂/PbO₂-ND electrode shows higher catalytic performance and less average energy consumption than other electrodes.It is also found that the removal efficiency of COD increases from 49% to 69% after 120 min treatment in the presence of 10 mM Cl^- in the electrolyte.Recycle experiment and accelerated life test confirm that Ti/TiO₂-RNTs/Sb-SnO₂/PbO₂-ND electrode has good stability and long service life.