Nanofibrous polydopamine complex membranes for adsorption of Lanthanum (III) ions

Surface engineering of polymer membranes via mussel-inspired chemistry

“…For instance, the PDA-coated PAN/PSu nanofibrous membranes were prepared for La 3 þ absorption, and the heterogeneous surface morphology (derived from phase separation) results in a high specific surface area (Fig. 4c) [115]. The adsorption ability is governed by the surface morphology and the extent of PDA deposition, and the latter is affected by the membrane wettability.…”

“…(b) Permeate flux as a function of time during oil/water emulsion crossflow filtration of XLERO membranes modified with varied dopamine concentrations, deposition times, and initial pH values of Tris-HCl buffer[92]. (c) Schematic and SEM images of PDA-modified PSU/PAN nanofibrous membranes for La 3 þ absorption[115].…”

High‐efficiency recovery of rare earth ions by hydrolyzed poly(styrene‐co‐maleic anhydride)

“…40 The equilibrium isotherms for the adsorption of RE 31 on to hydrolyzed PSMA at diffident temperatures (298, 308, and 318 K) at pH of 6.0 are depicted in Figure 6. With increasing temperature, the adsorption capacities of PSMA for RE 31 decreased.…”

“…To determine adsorption kinetics, the initial test solution was sampled at various time intervals (3,6,9,15,20,30,40,60,90, and 120 min) and at 298.15 K. In adsorption isotherms study, solution with various initial concentration (20,30,35, and 40 mg L 21 ) of individual metal ion were treated at diffident temperature (298, 308 and 318K). In the effect of pH, the pH value of solution was adjusted by adding either 0.1 mol L 21 NaOH or 0.1 mol L 21 HCl.…”

Polydopamine assisted immobilisation of copper(II) on titanium for antibacterial applications

“…[12][13][14][15] In addition, the abundant free catechol and amino groups of PDA could firmly combine with various metal ions by chelation. [16][17][18][19][20] The condition of PDA assisted immobilisation was simple and mild; most PDA coating processes were operated in room temperature and ordinary pressure using aqueous solutions. Reports have shown that PDA could tightly combine with Cu(II), thus could be used to adsorb copper ions from aqueous solution 21 or to immobilise copper onto surfaces.…”