Fig. 1
From: Metal-coordinated sub-10 nm membranes for water purification
Metal-coordinated assembly of MOPMs. a Schematic illustration of the assembly process for MOPMs on PAN substrate with Ag+, Zn2+, Ni2+, Fe3+, and Zr4+ ions. b Transition metal ions arranged based on ionization potential (In, eV) value. The ionization potential defined as: In = E (M) − E (Mn+), where n = 1, 2, 3, 4. c Calculated binding energy (ΔEbinding, kJ mol−1) between transition metal ions and deprotonated methyl phosphate. d FTIR curves of PAN substrate and MOPMs. e Digital photo images of water droplets on PAN substrate and MOPM-Fe3+ membrane. f SEM images of MOPMs. Scale bar: 500 nm
