Metal organic framework synthesis in the presence of surfactants: towards hierarchical MOFs?

ABSTRACT: The effect of synthesis pH and H₂O/EtOH molar ratio on the textural properties of different aluminium trimesate metal organic frameworks (MOFs) prepared in the presence of the well-known cationic surfactant cetyltrimethylammonium bromide (CTAB) at 120 °C was studied with the purpose of obtaining a MOF with hierarchical pore structure. Depending on the pH and the solvent used, different topologies were obtained (namely, MIL-96, MIL-100 and MIL-110). On the one hand, MIL-110 was obtained at lower temperatures than those commonly reported in the literature and without additives to control the pH; on the other hand, MIL-100 with crystallite sizes as small as 30 ± 10 nm could be easily synthesized in a mixture of H₂O and EtOH with a H₂O/EtOH molar ratio of 3.4 a

SUBMITTER: Seoane B 

PROVIDER: S-EPMC4456781 | biostudies-literature | 2015 Feb

REPOSITORIES: biostudies-literature