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

Research progress in metal–organic frameworks (MOFs) in CO2capture from post-combustion coal-fired flue gas: characteristics, preparation, modification and applications

“…The addition of GO-U changed the chemical properties and microstructure of the parent MOF, which was conducive to the CO 2 interaction on the surface. Szczesniak et al 121 investigated the influence of the component content on the CO 2 adsorption performance and pore structure of the synthesized composite material (OMC/CuBTC and OMC/GO/CuBTC), and found that OMC/CuBTC97 (containing 97 wt% of CuBTC) had the best specific surface area (1930 m 2 g −1 ) and CO 2 adsorption capacity (10.65 mmol g −1 ) at 273 K, 1 bar.…”

The unique opportunities of mechanosynthesis in green and scalable fabrication of metal–organic frameworks

“…Jaroniec and co-workers developed a dry milling approach to construct a three component composite based on ordered mesoporous carbon, graphene oxide and CuBTC MOF in which triblock copolymer Pluronic F127 was used as a soft-templating agent and graphene oxide and tannin were used as carbon precursors. 220 In the initial step of the mechanosynthesis process, a mixture of Pluronic F127 and graphene oxide were milled for 5 min followed by adding mimosa tannin and a further milling for 1 h to obtain a paste-like product which directly carbonized under N 2 gas at 900 °C for 1 h. The obtained OMC/GO composite was then ball milled in the presence of Cu(NO 3 ) 2 ·3H 2 O and ZnO for 1 h. After that H 3 BTC ligand was added and the reaction mixture was milled for another 1 h to obtain OMC/GO/CuBTC composite. The characteristic peaks of CuBTC were observed in the PXRD pattern of the composite which confirmed the successful formation of CuBTC in the presence of carbonaceous materials.…”

Recent advances in mechanochemical synthesis of mesoporous metal oxides

“…Ball milling has been shown as an efficient technique to synthesize organic or inorganic compounds as well as alter their physicochemical properties. 15,45 Upon this process, the starting powders are subjected to deformations, fractures, abrasion, cold weld etc., resulting in the reduction of particles size, higher specific surface area, smaller degree of structure ordering or even amorphization. Crystallinity defined as the level of structure ordering can be used for the evaluation of the structural alterations upon milling.…”