Electrode materials have an important influence on the performance of electroadsorption. In this paper, Polyacrylonitrile was introduced to the graphite surface by coating method, then amidoxime reaction was carried out by one-step hydrothermal method. The results of material analysis showed that the nitrile group were transformed to amidoxime group and the electrode had good thermal stability. The electrochemical test results demonstrated that the amidoxime-modified graphite felt electrode displayed a good specific capacitance of 46.5 F·g⁻¹ in 1 M NaCl solution at a scan rate of 5 mV·s⁻¹. The results of batch adsorption experiments showed that the adsorption capacity of uranium could reach 164.75 mg·g⁻¹ at −0.9 V (vs SCE). When sodium carbonate was used as eluent, the elution efficiency was 95% under the influence of reverse voltage (0.9 V). The adsorption capacity could reach 90% of the initial value after 5 times of reuse. The results indicated that the amidoxime-modified graphite felt had a good application prospect for removing uranium from water by electroadsorption method.

电极材料对电吸附性能有重要影响。本文通过涂覆法将聚丙烯腈引入石墨表面，然后通过一步水热法进行a肟反应。材料分析结果表明，腈基转化为a肟基，电极具有良好的热稳定性。电化学测试结果表明，mid胺肟修饰的石墨毡电极在1 M NaCl溶液中以5 mV·s ^-1的扫描速率显示出46.5 F·g ^-1的良好比电容。分批吸附实验结果表明，铀的吸附能力可达164.75 mg·g ^-1在-0.9 V（vs SCE）下。当使用碳酸钠作为洗脱液时，在反向电压（0.9 V）的影响下，洗脱效率为95％。重复使用5次后，吸附量可达到初始值的90％。结果表明，the胺肟改性石墨毡具有良好的电吸附法去除水中铀的应用前景。