Polyethyleneimine-grafted polysilsesquioxane hollow spheres for the highly efficient removal of anionic dyes and selective adsorption of Cr(VI)

The efficient adsorption of pollutants from wastewater is of considerable importance for environmental protection. Herein, a novel polyethyleneimine (PEI)-functionalised polysilsesquioxane hollow sphere (H-PVTMS-PEI) was prepared successfully via a facile grafting approach. The product was characterised using scanning electron microscopy with energy-dispersive spectroscopy, transmission electron microscopy, X-ray diffraction, N2...