| Autor: |
Sáenz-García DR; Environment and Energy Department, Advanced Materials Research Center, (CIMAV) S.C., Miguel de Cervantes 120, Chihuahua, Chih. 31136, Mexico.; Department of Chemistry, University of the Balearic Islands, Cra. Valldemossa Km 7.5, Palma 07122, Spain., Figuerola A; Department of Chemistry, University of the Balearic Islands, Cra. Valldemossa Km 7.5, Palma 07122, Spain., Turnes Palomino G; Department of Chemistry, University of the Balearic Islands, Cra. Valldemossa Km 7.5, Palma 07122, Spain., Leal LO; Environment and Energy Department, Advanced Materials Research Center, (CIMAV) S.C., Miguel de Cervantes 120, Chihuahua, Chih. 31136, Mexico., Palomino Cabello C; Department of Chemistry, University of the Balearic Islands, Cra. Valldemossa Km 7.5, Palma 07122, Spain. |
| Abstrakt: |
The preparation of a functional device based on a functionalized MIL-100(Fe) metal-organic framework for the solid-phase extraction of heavy metals is reported. By a simple and easy straightforward grafting procedure, a thiol-functionalized MIL-100(Fe) material (MIL-100(Fe)-SH) with a S/Fe ratio of 0.80 and a surface area of 840 m 2 g -1 was obtained. MIL-100(Fe)-SH exhibited a higher Hg(II) extraction (96 ± 5%) than that of MIL-100(Fe) (78 ± 4%) due to the interaction between thiol groups and Hg(II) ions. For practical applications, the obtained MIL-100(Fe)-SH was integrated by a simple method to a 3D printed support based on a matrix of interconnected cubes using poly(vinylidene fluoride) as binder, obtaining a functional device that simultaneously acts as stirrer and sorbent. The developed device showed high efficiency for the removal of Hg(II), good reusability, and excellent performance for the simultaneous preconcentration and further detection and quantification of Hg(II), Pb(II), and As(V) in tap, well, and lake water samples. |
