During the last few years, metal–organic frameworks (MOFs) are being considered as ideal candidates to find more efficient systems for the production and storage of energy [1]. MOFs are characterized by their large specific surface due to ultra-high porosity, tunable pore size distribution and structural tailorability. These characteristics will determine the properties obtained, and derived from them, their potential applications such as clean energy storage [2], CO2 capture and other separation processes [3,4], biomedical imaging [5], optical luminescence and catalysis [6].
Recently, zeolitic structures based on imidazolates groups as organic ligand (ZIFs) have appeared as an important subfamily of MOFs which present a high surface area, adjustable pore size, thermal stability above 500 °C and high chemical stability in aqueous and organic media. The synthetic route developed for the fabrication of metallic crystalline networks composed of Co2+ and 2-methylimidazole is simple, carried out in aqueous medium and at room temperature. The synthetic process used in this work for obtaining MOFs is based on a surfactant method [7] in which different proportions of the constituents were used.
The physicochemical characterization and the colloidal stability were carried out by dynamic light scattering (DLS), scanning transmission electron microscopy (STEM) and thermogravimetric analysis (TGA). Furthermore, we investigate the influence of the surfactant Cetyl Trimethyl Ammonium Bromide (CTAB) as well as the use of different solvents on the colloidal stability and the morphology, structure and chemistry of the synthesized systems.
References
- Wang, L.; Han, Y.; Feng, X.; Zhou, J.; Qi, P.; Wang, B. Metal–organic frameworks for energy storage: Batteries and supercapacitors. Coord. Chem. Rev. 2016, 307, 361–381. [Google Scholar] [CrossRef]
- Ma, S.; Zhou, H.-C. Gas storage in porous metal–organic frameworks for clean energy applications. Chem. Commun. 2009, 46, 44–53. [Google Scholar] [CrossRef] [PubMed]
- Sculley, J.P.; Li, J.-R.; Park, J.; Lu, W.; Zhou, H.-C.J. Metal-organic frameworks and porous polymer networks for carbon capture. Sustain. Technol. Syst. Policies 2012, 16. [Google Scholar] [CrossRef]
- Pettinari, C.; Tombesi, A. Metal–organic frameworks for carbon dioxide capture. MRS Energy Sustain. 2020, 7. [Google Scholar] [CrossRef]
- Chedid, G.; Yassin, A. Recent Trends in Covalent and Metal Organic Frameworks for Biomedical Applica-tions. Nanomaterials 2018, 8, 916. [Google Scholar] [CrossRef] [PubMed]
- Allendorf, M.D.; Stavila, V.; Talin, A.A.; Ullman, A.M.; Wang, T.C. Metal-Organic Frameworks with Open Metal Sites for Sensing, Catalysis, and Energy Storage. In ECS Meeting Abstracts; IOP Publishing: Bristol, UK, 2018. [Google Scholar]
- Navarro Poupard, M.; Polo, E.; Taboada, P.; Arenas-Vivo, A.; Horcajada, P.; Pelaz, B.; del Pino, P. Aqueous Synt-hesis of Copper(II)-Imidazolate Nanoparticles. Inorg. Chem. 2018, 57, 12056–12065. [Google Scholar] [CrossRef] [PubMed]
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. |
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).