Oxygen Vacancy-Enhanced Electrocatalytic Degradation of Tetracycline over a Co3O4–La2O3/Peroxymonosulfate System

• DOI: 10.1021/acsestwater.3c00575
• Publication Date: 2024-02-01T15:12:25Z
• Authors: Wen Zhao; Guangtao Wang; Pan Li; Yuning Shu; Hua Wang; Yuanzhen Zhou; Zhen Meng; Wenlei Zhu
• Keywords: Degradation; Oxygen evolution

Peroxymonosulfate (PMS) activated by metal oxides has been developed as a promising approach for advanced oxidation processes in the treatment of antibiotic containing wastewater; however, rapid and effective activation PMS still lacks reasonable catalyst-oriented design. Here, fabricating Co3O4–La2O3 bimetallic oxide electrode to implement defect engineering, we report an oxygen vacancy (OV)-mediated electrocatalytic system degradation tetracycline (TC). The rare earth La2O3 was used modify Co3O4 introduce OVs active sites, where is produce reactive species. composites facilitate generation singlet (1O2), which mediates via non-radical pathway. When ratio Co La 2:1, Co3O4–La2O3/PMS had efficiency TC more than 97.50% mineralization rate up 62.97% within 40 min. Overall, findings on defect-engineered materials could provide strategy wastewater with low energy consumption pollution.