Development of activated graphene-MOF composites for H2 and CH4 adsorption
The structural and adsorption properties of activated graphene/metal–organic framework (MOF) composites are investigated for four samples synthesized by in-situ crystallization and sonication-assisted methods. Depending on the method used, the composites showed different morphology, structure and consequently adsorption properties toward H2 and CH4. Addition of KOH-activated graphene during synthesis of an aluminum-containing MOF (MOF520) under sonication conditions boosted adsorption capacities of the resulting composite with respect to both adsorbates, while the in-situ crystallization of MOF520 in mesopores of the CO2-activated graphene assured very effective coupling of both components. Such comparative study is valuable for the design and synthesis of MOF-based composites for various applications.
KeywordsActivated graphene Graphene-MOF composites Hydrogen storage Methane storage MOF520
BS and JC acknowledge the National Science Centre (Poland) for support of this research under Grant UMO-2016/23/B/ST5/00532.
- Furukawa, H., Cordova, K.E., O’Keeffe, M., Yaghi, O.M.: The chemistry and applications of metal–organic frameworks. Science 341, 123044 (1–12) (2013)Google Scholar
- Weber, G., Bezverkhyy, I., Bellat, J.-P., Ballandras, A., Ortiz, G., Chaplais, G., Patarin, J., Coudert, F.X., Fuchs, A.H., Boutin, A.: Mechanism of water adsorption in the large pore form of the gallium-based MIL-53 metal-organic framework. Microporous Mesoporous Mater 222, 145–152 (2016)CrossRefGoogle Scholar
- Xu, X., Shi, W., Li, P., Ye, S., Ye, C., Ye, H., Lu, T., Zheng, A., Zhu, J., Xu, L., Zhong, M., Cao, X.: Facile fabrication of three-dimensional graphene and metal–organic framework composites and their derivatives for flexible all-solid-state supercapacitors. Chem. Mater. 29, 6058–6065 (2017)CrossRefGoogle Scholar