In this paper, a photoelectrocatalytic (PEC) system consisting of γ-Bi₂MoO₆ anode and Co₃O₄ loaded carbon fiber paper (Co₃O₄/CFP) cathode prepared by a hydrothermal method was established and used to degrade phenol. In order to enhance the PEC degradation efficiency of phenol, peroxymonosulfate (PMS) was introduced into this system. At an applied bias of 1.5 V, the removal efficiency of 10 mg/L phenol was increased from 6% to 100% with 2 mM PMS addition into the PEC process. The degradation rate constant of phenol was also increased to be 0.0496 min⁻¹. Effects of PMS concentration, applied bias and initial pH were investigated. Based on the ESR analysis, sulfate radicals (SO₄⁻) and hydroxyl radicals (HO) were proved to be the dominant oxidizing species for phenol degradation in the combined system. The PMS was activated to generate SO₄⁻ by loaded Co₃O₄, in which photogenerated-electrons accelerated the cobalt cycle process on the cathode. As a result, Co leaching was largely inhibited. The stability of the PEC system for organics degradation was exhibited.

在本文中，一个光电催化（PEC）系统，包括γ-Bi系的₂的MoO ₆阳极和Co ₃ ö ₄加载的碳纤维纸（共₃ ö ₄ / CFP）通过水热法来制备阴极成立，并用于降解苯酚。为了提高苯酚的PEC降解效率，将过氧一硫酸盐（PMS）引入到该系统中。在1.5 V的施加偏压下，在PEC工艺中添加2 mM PMS后，10 mg / L苯酚的去除效率从6％提高到100％。苯酚的降解速率常数也增加到0.0496 min ^-1。研究了PMS浓度，施加的偏压和初始pH值的影响。基于所述ESR分析，硫酸盐基团（SO ₄ ^- ）和羟基自由基（HO ）被证明是苯酚降解的主要氧化物质在组合系统。该PMS被激活以产生SO ₄ ^-通过装有限公司₃ ø ₄，其中光-电子加速阴极上的钴循环过程。结果，很大程度上抑制了Co的浸出。展示了用于有机物降解的PEC系统的稳定性。