Enhancement of adsorption efficiency of crystal violet and chlorpyrifos onto pectin hydrogel@FeO-bentonite as a versatile nanoadsorbent.

The magnetic mesoporous hydrogel-based nanoadsornet was prepared by adding the ex situ prepared FeO magnetic nanoparticles (MNPs) and bentonite clay into the three-dimentional (3D) cross-linked pectin hydrogel substrate for the adsorption of organophosphorus chlorpyrifos (CPF) pesticide and crystal violet (CV) organic dye. Different analytical methods were utilized to confirm the structural features. Based on the obtained data, the zeta potential of the nanoadsorbent in deionized water with a pH of 7 was - 34.