For further enhancing the electrochemical oxidation performance, sulfur-doped carbon particle electrode was employed in the three-dimensional (3D) electro-assisted activation of persulfate process (ACS/PS/EC). Herein, an in situ S-doped activated carbon (ACS) was prepared and applied as the particle electrode as well as catalyst in ACS/PS/EC system. Several carbon particle electrodes with different annealing temperature were prepared and characterized via EA, BET, XPS and Raman spectra. Cyclic voltammetry (CV) was perform to obtain the specific capacitance and investigate the interfacial electron transfer of ACS particle. The results of comparative experiments showed significant synergy between electric and catalytic activations of PS. Especially, the as-prepared sample treated at 850 °C (ACS-850) exhibited an outstanding catalytic performance, and the phenol degradation rate was greatly improved by nearly 100% with the application of electric field. By comparing of several carbon particle electrodes with different functional groups and specific capacitances, it is revealed that thiophene sulfur functional group is the mainly active site for both electric and catalytic activation of PS, and the specific capacitance acts as assistant factor. Quenching experiments proved that the 3D electro-assisted activation of PS proceeded through both radical and non-radical pathway. Possible mechanism for ACS/PS/EC electrochemical process was proposed.

为了进一步增强电化学氧化性能，在过硫酸盐法（ACS / PS / EC）的三维（3D）电辅助活化中采用了掺硫碳颗粒电极。在此，制备了原位S掺杂的活性炭（ACS），并将其用作颗粒电极以及ACS / PS / EC系统中的催化剂。制备了几个具有不同退火温度的碳粒子电极，并通过EA，BET，XPS和拉曼光谱进行了表征。进行循环伏安法（CV）以获得比电容并研究ACS颗粒的界面电子转移。比较实验的结果表明，PS的电活化和催化活化之间具有显着的协同作用。尤其是，在850°C（ACS-850）处理的样品制备过程中表现出出色的催化性能，在电场作用下，苯酚的降解率大大提高了近100％。通过比较几个具有不同官能团和比电容的碳粒子电极，可以发现噻吩硫官能团是PS的电和催化活化的主要活性部位，比电容是辅助因子。淬火实验证明PS的3D电辅助活化通过自由基和非自由基途径进行。提出了ACS / PS / EC电化学过程的可能机理。揭示了噻吩硫官能团是PS的电和催化活化的主要活性部位，比电容是辅助因子。淬火实验证明PS的3D电辅助活化通过自由基和非自由基途径进行。提出了ACS / PS / EC电化学过程的可能机理。揭示了噻吩硫官能团是PS的电和催化活化的主要活性部位，比电容是辅助因子。淬火实验证明PS的3D电辅助活化通过自由基和非自由基途径进行。提出了ACS / PS / EC电化学过程的可能机理。