Carboxymethyl-imidazolium O-vanillin Schiff base grafted into NH 2 -tagged MIL-101 (Cr) for effective removal of cupric ions from aqueous effluents.

Autor: Rizk MA; Department of Chemistry, Faculty of Science and Arts at Sharurah, Najran University, Sharurah, 68342, Saudi Arabia., Yahya R; College of Science, Department of Chemistry, University of Jeddah, Jeddah, Saudi Arabia., Alsaiari RA; Department of Chemistry, Faculty of Science and Arts at Sharurah, Najran University, Sharurah, 68342, Saudi Arabia., Alsaiari MA; Department of Chemistry, Faculty of Science and Arts at Sharurah, Najran University, Sharurah, 68342, Saudi Arabia., Shahat A; Department of Chemistry, Faculty of Science, Suez University, Suez, 43533, Egypt., Elshaarawy RFM; Department of Chemistry, Faculty of Science, Suez University, Suez, 43533, Egypt. reda.elshaarawy@suezuniv.edu.eg.; Institut Für Anorganische Chemie Und Strukturchemie, Heinrich-Heine Universität Düsseldorf, Düsseldorf, Germany. reda.elshaarawy@suezuniv.edu.eg.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2024 Jun; Vol. 31 (26), pp. 38180-38195. Date of Electronic Publication: 2024 May 25.
DOI: 10.1007/s11356-024-33663-6
Abstrakt: A novel adsorbent (MIL-CMIVSB) was fabricated by modification of H 2 N-MIL-101(Cr) with carboxymethyl-imidazolium O-vanillin Schiff base. The MIL-CMIVSB's physicochemical characteristics were examined using the pertinent characterization methods. NH 2 -MIL-101(Cr) has a BET surface area of 1492.4 m 2 g -1 , while MIL-CMIVSB adsorbent had 1278.7 m 2 g -1 . Batch adsorption experiments examined the MIL-CMIVSB's cupric ion adsorption capacity from aqueous solutions at different adsorbent doses (0.1-3 mg), pH (2.0-10.0), contact times (0-240 min), metal ion initial concentrations (10-300 mg/L), and temperatures (298-308 K). The optimum conditions were 1 mg/mL of MIL-CMIVSB adsorbent, 46 min adsorption time, pH 7, 100 ppm initial cupric ion concentration, and 303 K temperature. MIL-CMIVSB effectively and selectively removes cupric ions with an adsorption capability of 359.05 ± 12.06 mg/g. The nonlinear Liu isotherm governed Cu(II) sorption performance on MIL-CMIVSB (K L  = 0.257 ± 0.01 mg/g, R 2  = 0.99892) and pseudo-2nd-order kinetically (k 2  = 0.00116 × 10 -4  g/mg min, R 2  = 0.99721).
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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