Dual redox cycles of Mn(Ⅱ)/Mn(III) and Mn(III)/Mn(IV) on porous Mn/N co-doped biochar surfaces for promoting peroxymonosulfate activation and ciprofloxacin degradation

Zhifeng Liu, Miao He, Lin Tang, Binbin Shao, Qinghua Liang, Ting Wu, Yuan Pan, Xiansheng Zhang, Songhao Luo, Qingyun He, Lin Ge