Mechanochemical synthesis of three-component graphene oxide/ordered mesoporous carbon/metal-organic framework composites

Barbara Szczęśniak; Jenjira Phuriragpitikhon; Jerzy Choma; Mietek Jaroniec

doi:10.1016/j.jcis.2020.05.080

Mechanochemical synthesis of three-component graphene oxide/ordered mesoporous carbon/metal-organic framework composites

J Colloid Interface Sci. 2020 Oct 1:577:163-172. doi: 10.1016/j.jcis.2020.05.080. Epub 2020 May 24.

Authors

Barbara Szczęśniak¹, Jenjira Phuriragpitikhon², Jerzy Choma¹, Mietek Jaroniec³

Affiliations

¹ Institute of Chemistry, Military University of Technology, 00 908 Warsaw, Poland.
² Department of Chemistry and Biochemistry & Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA.
³ Department of Chemistry and Biochemistry & Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA. Electronic address: jaroniec@kent.edu.

PMID: 32474187
DOI: 10.1016/j.jcis.2020.05.080

Abstract

Graphene oxide-containing ordered mesoporous carbon (OMC/GO) composites were synthesized by mechanochemical soft-templating of mimosa tannin and graphene oxide with triblock copolymer Pluronic F127. Graphene oxide was added to modify the surface properties of ordered mesoporous carbon. Next, copper containing MOF (CuBTC) was synthesized in the presence of the OMC/GO composite via dry milling to obtain a three-component composites with different compositions. The composite with 50 wt% of CuBTC exhibited high CO₂ uptake capacity of 5.39 mmol·g^-1 at 0 °C and 1 bar. This study showed that CuBTC was initially crystallized in mesopores of carbonaceous materials, and next on their external surface. Small OMC amounts (~1 and ~3 wt%) added during the mechanochemical synthesis of CuBTC resulted in the enhanced surface area of the obtained two-component composites reaching 1930 m²·g^-1 as compared to those of parent materials. This paper reports a comprehensive study of carbon-CuBTC composites over a wide range of compositions, which may be interesting from the viewpoint of advancing and understanding the mechanochemical synthesis of composite materials with high surface areas, enhanced porosity and interfacial properties.

Keywords: CO(2) adsorption; Graphene-containing composites; Mechanochemical synthesis; Metal-organic frameworks; Ordered mesoporous carbons.