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A Highly Efficient Environmental-Friendly Adsorbent Based on Schiff Base for Removal of Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical Study
- Source :
- Molecules, Vol 26, Iss 5164, p 5164 (2021), Molecules, Volume 26, Issue 17
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- Removal of heavy metals from drinking water sources and rivers is of strategic health importance and is essential for sustainable ecosystem development, in particular in polluted areas around the globe. In this work, new hybrid inorganic-organic material adsorbents made of ortho- (Si-o-OR) or para-Schiff base silica (Si-p-OR) were synthesized and characterized in depth. These hybrid adsorbents show a high selectivity to Cu(II), even in the presence of competing heavy metals (Zn(II), Cd(II), and Pb(II)), and also demonstrate great reusability after five adsorption-desorption cycles. Maximum sorption capacity for Cu(II) was found for Si-o-OR (79.36 mg g−1) and Si-p-OR (36.20 mg g−1) in no less than 25 min. Energy dispersive X-ray fluorescence and Fourier transform-infrared spectroscopy studies demonstrate that this uptake occurs due to a chelating effect, which allows these adsorbents to trap Cu(II) ions on their surfaces<br />this result is supported by a theoretical study for Si-o-OR. The new adsorbents were tested against real water samples extracted from two rivers from the Oriental region of Morocco.
- Subjects :
- Base (chemistry)
Pharmaceutical Science
Organic chemistry
water cleaning technologies
DFT
Article
Analytical Chemistry
chemistry.chemical_compound
Adsorption
QD241-441
Drug Discovery
hybrid materials
Chelation
Physical and Theoretical Chemistry
chemistry.chemical_classification
Schiff base
Aqueous solution
Sorption
heavy metal pollution
chemistry
Chemistry (miscellaneous)
Molecular Medicine
Selectivity
Hybrid material
environment
Nuclear chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 14203049
- Volume :
- 26
- Issue :
- 5164
- Database :
- OpenAIRE
- Journal :
- Molecules
- Accession number :
- edsair.doi.dedup.....87ae32d7143fb2ab75f0744ae52a25c7