Upcycling Coir Fiber into Polydopamine-Enabled Adsorbents for Efficient Cu(II)/Cd(II) Removal and Effluent Safety. - Liu, Shangpeng; Wang, Wenji; Wang, Dadong; Lu, Jian; Li, Yibo; Lv, Mingchen; Sun, Min; Fan, Zhen (Materials (1996-1944), 2026)