Mesoporous Silica Polymer Nanocomposites Functionalized With Vinyl Pyridine And Vinyl Pyrrolidinone for The Adsorption Of Humic Acid
G. Robin Wilson and Amit Dubey*
Department of Chemistry, Maulana Azad National Institute of Technology (MANIT), Bhopal 462051, M.P, India
Adv. Mater. Lett., 2016, 7 (9), pp 760-764
Publication Date (Web): Jul 09, 2016
Copyright © 2019 VBRI Press
In order to induce the hydrophobicity and the influence of functional vinyl monomers, vinyl pyridine (VP), vinylpyrolidinone (V2P) and vinylsulphonic acid (VSA) were impregnated into SBA-15 matrix to generate SBA/L nanocomposites and characterized for the adsorption of humic acid (HA) for the first time. The structural order of the SBA/L samples was confirmed by standard physicochemical characterizations (powder X-ray diffraction (PXRD), adsorption isotherm, SEM etc). Considerable adsorption (120-140 mg/g) of HA was observed over basic (SBA/VP and SBA/V2P) nanocomposites compared to the acidic ones. Adsorption parameters like effect of temperature, pH, weight of the adsorbent and time were studied. The possible mechanistic pathway for hydrophilic/hydrophobic interactions was also explained.
Vinyl monomer, humic acid, SBA-15/L, adsorption of HA.