A green metal–organic framework to monitor water contaminants |
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Authors: | Priscilla Rocí o-Bautista,Veró nica Pino,Juan H. Ayala,Catalina Ruiz-Pé rez,Oriol Vallcorba,Ana M. Afonso,Jorge Pasá n |
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Affiliation: | Department of Chemistry, Analytical Chemistry Division, Universidad de La Laguna, Apartado 456, 38200 La Laguna Spain.; Laboratorio de Rayos X y Materiales Moleculares (MATMOL), Department of Physics, Universidad de La Laguna, Apartado 456, 38200 La Laguna Spain.; ALBA Synchrotron Light Source, Cerdanyola del Vallés, Barcelona 08920 Spain |
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Abstract: | The CIM-80 material (aluminum(iii)-mesaconate) has been synthetized in high yield through a novel green procedure involving water and urea as co-reactants. The CIM-80 material exhibits good thermal stability with a working range from RT to 350 °C with a small contraction upon desolvation. Moreover, this material is stable in water at different pH values (1–10) for at least one week, and shows a LC50 value higher than 2 mg mL−1. The new material has been tested in a microextraction methodology for the monitoring of up to 22 water pollutants while presenting little environmental impact: only 20 mg of CIM-80 and 500 μL of acetonitrile are needed per analysis. The analytical performance of the CIM-80 in the microextraction strategy is similar to or even better for several pollutants than that of MIL-53(Al). The average extraction efficiencies range from ∼20% for heavy polycyclic aromatic hydrocarbons to ∼70–100% for the lighter ones. In the case of the emerging contaminants, the average extraction efficiency can reach values up to 70% for triclosan and carbamazepine.A low cytotoxic MOF prepared with an environmental-friendly approach, as a novel extractant of water pollutants using a microextraction method. |
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