Synthesis of triethoxysilylated cyclen derivatives, grafting on magnetic mesoporous silica nanoparticles and application to metal ion adsorption. Issue 18 (12th March 2021)

• Record Type: Journal Article
• Authors: Li, Hao; Ménard, Mathilde; Vardanyan, Ani; Charnay, Clarence; Raehm, Laurence; Oliviero, Erwan; Seisenbaeva, Gulaim A.; Pleixats, Roser; Durand, Jean-Olivier
• Is Part Of: RSC advances. Volume 11:Issue 18(2021)
• Page Start: 10777
• Page End: 10784
• Publication Date: 2021-03-12
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d1ra01581h
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : The adsorption of metal ions through ligand-functionalized magnetic mesoporous silica nanoparticles is described. Abstract : The synthesis through click chemistry of triethoxysilylated cyclen derivative-based ligands is described. Different methods were used such as the copper catalyzed Huisgen's reaction, or thiol–ene reaction for the functionalization of the cyclen scaffold with azidopropyltriethoxysilane or mercaptopropyltriethoxysilane, respectively. These ligands were then grafted on magnetic mesoporous silica nanoparticles (MMSN) for extraction and separation of Ni(ii ) and Co(ii ) metal ions from model solutions. The bare and ligand-modified MMSN materials revealed high adsorption capacity (1.0–2.13 mmol g −1 ) and quick adsorption kinetics, achieving over 80% of the total capacity in 1–2 hours.