Cu/Fe co-modified nitrogen self-doped biochar as a heterogeneous Fenton-like catalyst for degradation of organic pollutants: Synthesis, performance, and mechanistic study - Xiaoling Peng; Yuehong Yang; Junya Wang; Wenwen Yuan; Yongkang Guo; Weiyao Hu; Xijia Yang (Journal of Environmental Chemical Engineering, 2023)