Layer-by-Layer Assembly of Polyelectrolytes on Urchin-like MnO2 for Extraction of Zn2+, Cu2+ and Pb2+ from Alkaline Solutions

Three-dimensional (3D) urchin-like MnO2@poly (sodium 4-styrene sulfonate) (PSS)/poly (diallyl dimethylammonium chloride) (PDDA)/PSS particles were prepared via the layer-by-layer (LBL) assembly of polyelectrolytes for extraction Zn2+ from alkaline media. The adsorption performance on MnO2, MnO2@PSS/PDDA/PSS, and MnO2@(PSS/PDDA)3/PSS was investigated in batch experiments. MnO2@PSS/PDDA/PSS has been studied under various conditions, such as initial concentration, adsorbent dosage, solution’s pH, reaction time. process is well represented by pseudo-second-order kinetic model, equilibrium data fit Freundlich isotherm well. also showed high efficiency Pb2+ Cu2+ removal slightly water. Thus, our research provides a deep insight into preparation 3D manganese oxides with polyelectrolyte films heavy metal ions, Pb2+, Cu2+, Zn2+, wastewater.