Quaternization of Poly(2-diethyl aminoethyl methacrylate) Brush-Grafted Magnetic Mesoporous Nanoparticles Using 2-Iodoethanol for Removing Anionic Dyes

Abstract

Magnetic mesoporous silica nanoparticles (Fe3O4-MSNs) were successfully synthesized with a relatively high surface area of 568 m2g−1. Fe3O4-MSNs were then modified with poly(2-diethyl aminoethyl methacrylate) (PDEAEMA) brushes using surface-initiated ARGET atom transfer radical polymerization (ATRP) (Fe3O4@MSN-PDMAEMA). Since the charge of PDEAEMA is externally regulated by solution pH, tertiary amines in the polymer chains were quaternized using 2-iodoethanol to obtain cationic polymer chains with a permanent positive charge (Fe3O4@MSN-QPDMAEMA). The intensity of the C−O peak in the C1s X-ray photoelectron spectrum increased after reaction with 2-iodoethanol, suggesting that the quaternization process was successful. The applicability of the synthesized materials on the removal of methyl orange (MO), and sunset yellow (E110) dyes from an aqueous solution was examined. The effects of pH, contact time, and initial dyes concentrations on the removal performance were investigated by batch experiments. The results showed that the Fe3O4@MSN-PDMAEMA sample exhibited a weak adsorption performance toward both MO and E110, compared with Fe3O4@MSN-QPDMAEMA at a pH level above 5. The maximum adsorption capacities of MO and E110 using Fe3O4@MSN-QPDMAEMA were 294 mg g−1 and 194.8 mg g−1, respectively.

Adsorption and Photocatalytic Properties of Tris(4-aminophenyl)amine-based Polyimide/Graphitic Carbon Nitride Composites for Organic Dye Removal

“…In particular, adsorption is regarded as a reliable treatment owing to simple processing and low cost, but it is connected with the production of solid waste in significant amounts. 7 In recent times, polymers have garnered significant attention as viable materials for water treatment due to their advantageous characteristics such as low toxicity, customizable functionalities, and cost-effectiveness. 12 Certain polymers exhibit a branch-like structure, falling into categories like dendronized, multiarmed star, and hyperbranched polymers.…”

Zwitterionic Polymer Brushes Coated with Mesoporous Silica Nanoparticles as Efficient Adsorbents for Dye Removal from Aqueous Solutions

“…Magnetic MSNPs were modified with quaternized poly(2diethyl aminoethyl methacrylate) with 2-iodoethanol (Fe 3 O 4 @ MSN-QPDMAEMA) as an effective nanoadsorbent. 27 The synthesized materials demonstrated high adsorption capacities toward the removal of methyl orange (MO) and sunset yellow (E110) dyes from contaminated water, with maximum adsorption capacities of MO and E110 of 294 and 194.8 mg g −1 , respectively. MSNPs modified with poly(2-(tertbutylamino)ethyl methacrylate) brushes have been synthesized and applied as an efficient adsorbent for the removal of chlorophenoxy herbicides and paracetamol from contaminated water.…”

“…Their results showed that the Lys–PGMA nanocomposite was an excellent nanoadsorbent for the selective removal of dyes from water, with adsorption capacities of 0.54 and 0.85 mmol g –1 for LY and MB, respectively. Magnetic MSNPs were modified with quaternized poly­(2-diethyl aminoethyl methacrylate) with 2-iodoethanol (Fe 3 O 4 @MSN-QPDMAEMA) as an effective nanoadsorbent . The synthesized materials demonstrated high adsorption capacities toward the removal of methyl orange (MO) and sunset yellow (E110) dyes from contaminated water, with maximum adsorption capacities of MO and E110 of 294 and 194.8 mg g –1 , respectively.…”

“…25 Our previous work affirms that the adsorption performance of MSNPs could be significantly improved after surface modification with polymer brushes via SI-ATRP. 26,27 Jing et al reported the preparation of lysine-attached poly(glycidyl methacrylate) (PGMA) brushes grafted to magnetic nanoparticles for the removal of lemon yellow (LY) and MB from wastewater. 28 Their results showed that the Lys− PGMA nanocomposite was an excellent nanoadsorbent for the selective removal of dyes from water, with adsorption capacities of 0.54 and 0.85 mmol g −1 for LY and MB, respectively.…”

Adsorption equilibrium and kinetics studies of crystal violet adsorbed by anionic polymer brush functionalized mesoporous silica nanoparticles

“…For example, chitosan-coated nanoparticles modified with diethylenetriamine pentaacetate have been synthesized to improve the selective adsorption of lead (II) and methylene blue (MB) [44]. Magnetic MSNPs have been fabricated and quaternized with 2-iodoethanol to remove anionic dyes from aqueous solutions, resulting in improved removal efficiency [45].…”