Degradation of organic pollutants using a ternary heterojunction catalyst (CoS 2 /CoCo 2 O 4 -MnFe 2 O 4 ) for activated peroxymonosulfate with magnetic separation, anti-ion interference, and low ion leaching Ying Shen a,1 , Fan Qiu a,1 , Yang Fan a , Yaming Wang a , Jiawei Kang a , Me ...