Peroxymonosulfate-based advanced oxidation process (PMS-AOPs) is one of most effective approaches for eliminating emerging organic pollutants (EOPs). To develop high-performance and stable PMS activators is the key to the further development of PMS-AOPs. Cobalt-based catalysts have been proved to be the excellent PMS activators. Here, cobalt bismuth oxide (Bi_7.53Co_0.47O_11.92) prepared by facile one-step calcination method was employed as the new PMS activator. As expected, diclofenac (DCF), one kind of EOPs, were quickly decomposed and even mineralization by the Bi_7.53Co_0.47O_11.92 activated PMS system. Within 10 min of reaction, 100% degradation efficiency and 82.1% mineralization rate were achieved. The toxicity of degraded products was assessed to be much lower than pristine DCF. Moreover, six-cycle experiments verified the good reusability of Bi_7.53Co_0.47O_11.92. This work contributes to develop new stable and high-efficiency PMS heterogeneous activators, being beneficial to build high-performance PMS-AOPs for EOPs treatment.

基于过氧单硫酸盐的高级氧化工艺（PMS-AOPs）是消除新兴有机污染物（EOPs）的最有效方法之一。开发高性能、稳定的PMS激活剂是PMS-AOPs进一步发展的关键。钴基催化剂已被证明是优良的 PMS 活化剂。在这里，采用简单的一步煅烧法制备的钴铋氧化物（Bi _7.53 Co _0.47 O _{11.92 ）作为新型PMS活化剂。正如预期的那样，一种EOPs双氯芬酸（DCF）被Bi 7.53} Co _0.47 O _11.92快速分解甚至矿化激活 PMS 系统。在反应10分钟内，降解效率达到100%，矿化率达到82.1%。降解产物的毒性被评估为远低于原始 DCF。此外，六循环实验验证了Bi _7.53 Co _0.47 O _11.92良好的可重复使用性。该工作有助于开发新型稳定高效的 PMS 异质活化剂，有利于构建用于 EOPs 治疗的高性能 PMS-AOPs。