Fig. 6From: Absorption mechanisms of Cu2+ on a biogenic bixbyite-like Mn2O3 produced by Bacillus CUA isolated from soilThe final possible linkage between the CuO6 octahedron and the MnO6 octahedron of biogenic Mn oxide (a) one CuO6 octahedron and one MnO6 octahedron, regular (grey) or distorted (green), linked as MM complex; (b) one CuO6 octahedron and two regular MnO6 octahedra linked as BB complexBack to article page