EEnvironmental Science and Pollution Research5/7/2026Engineering Co₃O₄ nanosheets with abundant oxygen vacancies and Co2⁺ as an efficient activator of PMS for degradation of methylene blueChengying Luo·Ping Jiang·Daiping He·Renwei Zheng·Qingsong Liu·Xulin Qiu·Junli SunRead at Environmental Science and Pollution ResearchTagsCatalytic Processes in Materials ScienceMaterials Chemistry