TY  - JOUR
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85142607533&doi=10.3390%2fmolecules27227775&partnerID=40&md5=c508bc2adbe3faf3677fb1f6e5ae43fd
A1  - Reddy, A.V.B.
A1  - Rafiq, R.
A1  - Ahmad, A.
A1  - Maulud, A.S.
A1  - Moniruzzaman, M.
JF  - Molecules
VL  - 27
Y1  - 2022///
SN  - 14203049
PB  - MDPI
N2  - In the current study, we have synthesized an imidazolium based cross-linked polymer, namely, 1-vinyl-3-ethylimidazolium bis(trifluoromethylsulfonyl)imide (polyveimTf2N-TRIM) using trimethylolpropane trimethacrylate as cross linker, and demonstrated its efficiency for the removal of two extensively used ionic dyesâ??methylene blue and orange-IIâ??from aqueous systems. The detailed characterization of the synthesized polyveimTf2N-TRIM was performed with the help of 1H NMR, TGA, FT-IR and FE-SEM analysis. The concentration of dyes in aqueous samples before and after the adsorption process was measured using an UV-vis spectrophotometer. The process parameters were optimised, and highest adsorption was obtained at a solution pH of 7.0, adsorbent dosage of 0.75 g/L, contact time of 7 h and dye concentrations of 100 mg/L and 5.0 mg/L for methylene blue and orange-II, respectively. The adsorption kinetics for orange-II and methylene blue were well described by pseudo-first-order and pseudoâ??second-order models, respectively. Meanwhile, the process of adsorption was best depicted by Langmuir isotherms for both the dyes. The highest monolayer adsorption capacities for methylene blue and orange-II were found to be 1212 mg/g and 126 mg/g, respectively. Overall, the synthesized cross-linked polyveimTf2N-TRIM effectively removed the selected ionic dyes from aqueous samples and provided >90% of adsorption efficiency after four cycles of adsorption. A possible adsorption mechanism between the synthesised polymeric adsorbent and proposed dyes is presented. It is further suggested that the proposed ionic liquid polymer adsorbent could effectively remove other ionic dyes and pollutants from contaminated aqueous systems. © 2022 by the authors.
IS  - 22
N1  - cited By 2
KW  - 2-naphthol orange; coloring agent; ionic liquid; methylene blue; polymer; water
KW  -  adsorption; chemistry; infrared spectroscopy; kinetics; water management; water pollutant
KW  -  Adsorption; Coloring Agents; Ionic Liquids; Kinetics; Methylene Blue; Polymers; Spectroscopy
KW  -  Fourier Transform Infrared; Water; Water Pollutants
KW  -  Chemical; Water Purification
TI  - Cross-Linked Ionic Liquid Polymer for the Effective Removal of Ionic Dyes from Aqueous Systems: Investigation of Kinetics and Adsorption Isotherms
ID  - scholars16216
AV  - none
ER  -