Capture and degradation of toxic molecules
Existing technologies for pollutant remediation include precipitation, membrane technology, coagulation/flocculation, biological processes, advanced oxidation processes (AOPs) and adsorption. However, these conventional decontamination and disinfection methods suffer from high operating cost and generation of secondary pollutants and, which is more important, they are not able to completely eliminate the waste of contaminated air/water/soil. Metal-organic frameworks (MOFs), are characterized by a high surface area, tunable structures, and periodically distributed abundant adsorption and catalytic sites. We have been able to show that the combination of acidic Lewis sites (high valent early block d metal ions), basic sites (oxo/hydroxide) groups together with fine tuning of acid-base properties and porosity by doping with metal alcoxides/amino groups leads to materials that are able to selectively capture highly toxic molecules ranging from Chemical warfare agents (nerve agents, blister agents) to Pesticides (E. López et al, Angew. Chem. Int. Ed. 2015, 54, 6790-6794; R. Gil et al. J. Am. Chem. Soc. 2019, 141, 30, 11801-11805; J. Castells-Gil et al Chem, 2020, 6, 1–14R. Gil et al. ACS Appl. Mater. Interfaces 2021, 13, 42, 50491–50496; L Gonzalez et al. Materials Today Chemistry 22, 100596).