Adsorption properties of a microporous and mesoporous hyper-crosslinked polymeric adsorbent functionalized with phenoxy groups for phenol in aqueous solution.

A microporous and mesoporous hyper-crosslinked polymeric adsorbent modified with phenoxy group HJ-01 was prepared and its adsorption properties for phenol were carefully investigated in this study. Its chemical structure and pore structure were characterized by chemical analysis, infrared spectroscopy, elemental analysis, and N(2) adsorption and desorption experiments. The acidic and neutral solution pH was suitable for the adsorption of phenol onto HJ-01 resin in aqueous solution and NaCl posed a positive effect on the adsorption. The adsorption dynamic curves obeyed the pseudo-second-order rate equation and the adsorption isotherms can be characterized by a Freundlich isotherm model. The adsorption thermodynamic parameters can be quantitatively correlated with the fractional loading and its surface energetic heterogeneity can be described with a function of adsorption enthalpy.