Le Minh Tri, Nguyen Thanh Tung, Ngo Van Thanh Huy, Tran Anh Khoa and Tran Anh Khoi (2025) “Cobalt-doped biochar derived from coir fiber activation for peroxymonosulfate degradation of methylene blue”, Journal of Military Science and Technology, 102(102), pp. 76–83. doi: 10.54939/1859-1043.j.mst.102.2025.76-83.