Influence of phosphate species on peroxymonosulfate activation by copper-cobalt dual-atom biochar for sulfamethoxazole degradation - Chuanbin Wang; Yang Hu; Ning Li; Hailin Tian; Xiaoyu Wu; Jingnan Tian; Tianyuan Zhang; Yixi Xie; Daying Chen; Changchun Xin; Yanpeng Cai; Guanyi Chen; et al. (ENGINEERING Environment, 2026)