- Enhanced hydrophobicity of modified ZIF-71 metal-organic framework for biofuel purification
-
Hydrophobic materials are desirable for biofuel purification applications. In this work, the atomic substitution of Cl atom with Br atom in the imidazole organic linker was carried out to produce a more hydrophobic ZIF-71, named ZIF-71(ClBr) and ZIF-71(ClBr)-SE for the material with an additional solvent exchange procedure. The physicochemical characterization revealed that ZIF-71(ClBr) and ZIF-71(ClBr)-SE are isostructural to ZIF-71, have a high surface area (769 and 969 m2/g), and are hydrophobic (126 and 130° water contact angle). As a proof of concept, D4 siloxane adsorption capacity onto ZIF-71(ClBr) and ZIF-71(ClBr)-SE was estimated (1.76 and 2.66 mg/g, respectively). Furthermore, a superior adsorption capacity was obtained when ZIF-71(ClBr)-SE was used due to its higher hydrophobic nature, and similar results were obtained with ZIF-8, used as a frame of reference. Therefore, the high surface area and the hydrophobic nature of ZIF-71(ClBr)-SE make it compelling material for biofuel purification applications.
- Davila-Guzman, Nancy E.,Fonseca-García, Abril,Garza-Navarro, M. A.,Hernández-Fernández, Eugenio,Juárez-Ramírez, Isaías,Michaelis, David J.,Raziel álvarez, J.,Rico-Barragan, Alan,Rodríguez-Hernández, Joelis,Tiempos-Flores, Norma
-
supporting information
(2022/03/08)
-