Polar-modified post-cross-linked polystyrene and its adsorption towards salicylic acid from aqueous solution

Selected pharmaceuticals removal using algae derived porous carbon: experimental, modeling and DFT theoretical insights

“…14,23,64 They can form strong H-bonds with oxygen-containing surface functional groups present in PCLD@NaOH and be not repelled by the surface positive charge. 65 Accordingly, they presented their highest aspirin adsorption at pH 3.4, which was close to the original pH of the aspirin solution. As the solution pH increased from 3.4 to 12.0, aspirin and ketoprofen were progressively transformed to its carboxylate conjugate bases, which were repelled from the increasingly negatively charged PCLD@NaOH surfaces.…”

Comparison of hyper-cross-linked polystyrene/polyacryldiethylenetriamine (HCP/PADETA) interpenetrating polymer networks (IPNs) with hyper-cross-linked polystyrene (HCP): structure, adsorption and separation properties

“…[4][5][6][7] HCP is synthesized frequently from linear polystyrene (PS) or low cross-linked poly(styrene-co-divinylbenzene) using monochloromethylether (MCME), p-dibenzenylchloride (DBC) or p-dichloromethylbenzene (DCMB) as a post-crosslinking reagent via the typical Friedel-Cras reaction, and the Friedel-Cras catalysts include anhydrous zinc chloride and iron(III) chloride and stannic (IV) chloride. [8][9][10] Owing to its hydrophobic surface, HCP possesses low adsorption towards polar aromatic compounds. [8][9][10] Owing to its hydrophobic surface, HCP possesses low adsorption towards polar aromatic compounds.…”

Microwave assisted green synthesis of Fe2O3/biochar for ultrasonic removal of nonsteroidal anti-inflammatory pharmaceuticals

“…[49][50][51][52] They can form strong H-bonds with oxygen-containing surface functional groups present in the surface of Fe 2 O 3 /biochar and be not repelled by the surface positive charge. 53 Accordingly, they revealed their maximum removal at pH 3.2. The increases in solution pH from 3.2 to 12, SA molecules were changed to its carboxylate conjugate bases, which was repelled from the increasingly negatively charged Fe 2 O 3 /biochar surfaces.…”