Single-step synthesis of nitrogen and phosphorus co-doped biochar and its application in dye removal: synergistic effects of adsorption and peroxymonosulfate activation - Yixuan Shi; Mingfeng Yin; Dong Liu; Xingrui Gao; Xiao Liu; Tengteng Yang; Zuoping Zhao; Xiaohui Ji; Caibin Zhao; Xianzhao Shao (Environmental Research, 2025)