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 degrees 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 (similar to 1 and similar to 3 wt%) added during the mechanochemical synthesis of CuBTC resulted in the enhanced surface area of the obtained two-component composites reaching 1930 m(2) .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. (C) 2020 Elsevier Inc. All rights reserved.