Synthetic strong base anion exchange resins: synthesis and sorption of Mo(VI) and V(V)

Polymerization-Driven Immobilization of dc-APGD Synthesized Gold Nanoparticles into a Quaternary Ammonium-Based Hydrogel Resulting in a Polymeric Nanocomposite with Heat-Transfer Applications

“…The amount of the solution introduced was kept to a minimum (approximately 8 mL), allowing solid reagents to be dissolved. When reagents were completely dissolved, the resultant mixture was degassed with N 2 and temperature was elevated to 75 °C using an IKA RCT Basic magnetic stirrer (Staufen im Breisgau, Germany) equipped with a round heating dish and a reflux condenser to carry out free-radical polymerization according to the procedure described by Cyganowski et al [ 42 ]. As the solution after dc-APGD treatment contained raw-AuNPs as well as their unreacted precursor, three different approaches were utilized for polymerization-driven immobilization of synthesized Au nanostructures according to the following procedures: NC1: Free-radical polymerization was carried out at 75 °C for 24 h. The resultant product was extensively washed with re-distilled water on a frittered glass funnel until the pH of the outflow was neutral.…”

“…The obtained samples were named as NC1, NC2, and NC3 according to synthesis routes described above, respectively. Additionally, raw VBTAC- co -MBA copolymer was synthesized [ 42 ] and used as a control sample.…”

“…The selection of quaternary ammonium-based hydrogels will fulfill all of these requirements, as they are water-soluble monomers with strong-base amino functionality and chemical stability (due to possible cross-linking). Moreover, quaternary ammonium-based hydrogels have reversible hydrophilic-hydrophobic properties, which significantly broaden their possible applications for biomedical purposes [ 41 ] and separation processes [ 42 ]. Additionally, they are proven to be suitable for the synthesis of nanocomposites [ 43 ].…”

Separation of vanadium and tungsten from synthetic and spent catalyst leach solutions using an ion-exchange resin

“…This indicates that the adsorption of tungsten is explained well by the Freundlich adsorption isotherm. 23,[26][27][28][29][30][31]…”