Research on Synthesis of Feco@N-C and Activation Persulfate Jun Chen, Shangqing Xia, Longchi Zhao, Sisi Cao, Cheng Zong and Jie Jin E3S Web Conf., 350 (2022) 01014 Published online: 09 May 2022 DOI: 10.1051/e3sconf/202235001014