In this work, Gd‐doped PbO₂ electrodes were prepared by electrodeposition procedure. In the accelerated life test, the service life of Gd‐doped PbO₂ electrodes are more stable and durable. Scanning electron microscope and x‐ray diffraction tests reveal that Gd‐doped PbO₂ electrodes have more compact structure and finer grain size. Electrochemical measurements and fluorescence experiments show that Gd‐doped PbO₂ electrodes have higher oxygen evolution overpotential, a larger electrochemically active surface area, and stronger ability to generate hydroxyl radicals. The electrocatalytic performance of the Gd‐doped PbO₂ electrode for the electrochemical degradation of thiamethoxam was studied. The degradation process accorded with pseudo‐first‐order kinetics, with higher thiamethoxam and total organic carbon removal capabilities, as well as higher mineralization current efficiency and lower energy consumption. In the degradation process, it has favourable reusability. The experimental results demonstrate that Gd‐doped PbO₂ electrodes have an excellent treatment effect and a wider application prospect in the field of pollutant degradation.

中文翻译：

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Gd掺杂PbO2电极的制备，表征和电催化性能的研究

在这项工作中，通过电沉积程序制备了掺Gd的PbO ₂电极。在加速寿命测试中，掺Gd的PbO ₂电极的使用寿命更加稳定和耐用。扫描电子显微镜和X射线衍射测试表明，掺Gd的PbO ₂电极具有更紧凑的结构和更细的晶粒尺寸。电化学测量和荧光实验表明，掺Gd的PbO ₂电极具有更高的氧释放超电势，更大的电化学活性表面积和更强的生成羟基自由基的能力。掺Gd的PbO ₂的电催化性能研究了用于电化学降解噻虫嗪的电极。降解过程符合拟一级动力学，具有更高的噻虫嗪和总有机碳去除能力，以及更高的矿化电流效率和更低的能耗。在降解过程中，它具有良好的可重复使用性。实验结果表明，掺Gd的PbO ₂电极具有优异的处理效果，在污染物降解领域具有广阔的应用前景。