题名：Cobalt bismuth oxide with cobalt(II/III) as a new stable peroxymonosulfate activator for effective degradation, mineralization, and detoxification of diclofenac in water

来源：Journal of Cleaner Production

发表年代：2022年

作者：Wei Zhao, Zhiyao Duan, Zheng Zheng, Bo Li*

Abstract：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