PEI@SiO₂: synthesis from diatomite and application for capturing phenolic compounds from aqueous solution

Abstract

A PEI@SiO2 hybrid composite was synthesized for sorption of phenolic compounds.

Polyethyleneimine as a novel desorbent for anionic organic dyes on layered double hydroxide surface

“…Notably, the hydrophobic vinyl of PEI can interact with hydrophobic chains of some compounds through hydrophobic interaction [19]. Therefore, PEI with the three predominant features exhibits strong adsorption capacity for a series of substances [20][21][22][23]. For example, PEI was grafted onto the surface of nanoparticles to improve the adsorption capacity of nanoparticles toward anionic contaminants through electrostatic attraction [24].…”

“…The PEI/SiO 2 composite material was successfully fabricated to adsorb 2,4,6-trinitrotoluene through hydrogen bonding between PEI and 2,4,6-trinitrotoluene [25]. Although there are many cases about the efficient adsorption capacity of PEI [20][21][22][23], to the best of our knowledge, no studies have investigated the use of PEI as a desired desorbent for the removal of adsorbed compounds from materials. There is apparently no good reason to disregard this promising desorbent.…”