A novel macroporous polymer–inorganic nanocomposite as a sorbent for pertechnetate ions

Abstract

A novel magnetic macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (mPGME) was prepared by suspension copolymerization and functionalized with diethylenetriamine (mPGME-deta).

Effect of polyurethane structure on arsenic adsorption capacity in nanofibrous polymer/ferrous sulphate-based systems

“…This area is also attributable to vibrations of bonds with FeSO 4 , more precisely, the SO 4 groups. 62–64 The same phenomenon is evident in PU918 supplemented with FeSO 4 (Fig. 7).…”

“…62 and 63) in consideration of the change in absorbance at 1660 cm −1 , associated with a CO bond, a response in the band region of 1181 cm −1 , suggesting the formation of C–O, and a slight shift in the position of the carbonyl band at 1732 cm −1 . 62–64…”

“…62 and 63) in consideration of the change in absorbance at 1660 cm −1 , associated with a CO bond, a response in the band region of 1181 cm −1 , suggesting the formation of C-O, and a slight shift in the position of the carbonyl band at 1732 cm −1 . [62][63][64] In the case of the PUSU-based nanostructures doped with FeSO 4 and without the additive (Fig. 6), the presence of FeSO 4 is evident by the absorption band at 610-660 cm −1 .…”

Characterization of glycidyl methacrylate based magnetic nanocomposites

“…Based on our previous investigations [13,37], the synthesized amino-functionalized magnetic macroporous copolymer composite mPGMT-deta could be effective for adsorption of water contaminants, like radionuclides, cations and oxyanions, etc. A relatively high surface area combined with the possibility for introduction of different functional groups by the reaction with epoxide groups in GMA as well as easy separation of mPGMT-deta particles from metal salt solutions by an external magnetic field makes this composite potentially attractive as a magnetic adsorbent.…”

Reactive Adsorption of Parabens on Synthesized Micro- and Mesoporous Silica from Coal Fly Ash: pH Effect on the Modification Process

“…The material that showed better performance in the initial adsorption tests was selected for further adsorption experiments, but first, the point of zero charge (pH PZC ) was determined to select the most appropriate pH for the subsequent tests. pH PZC was determined for the FA-AT7 material by the pH drift method. − A mass of 0.05 g was placed in contact with 20 mL of NaCl solutions (0.1 mol L –1 ), previously adjusted to the pH range from 2 to 12 for which was used 1 mol L –1 HCl or 1 mol L –1 NaOH solution was used. The solutions were stirred for 24 h at 200 rpm.…”