(225e) Synthesis of Metal-Organic Frameworks and Activated Carbon Composites and Their Carbon Dioxide Adsorption Performance

Carbon dioxide is one of the greenhouse gases that contribute to global warming. Various technologies and materials are being developed to capture large amounts of carbon dioxide generated from power plants and factories. Among these, the adsorption method, which uses porous materials capable of selectively capturing the desired gas, is a promising technology for separating carbon dioxide from gas mixtures. Metal-organic frameworks have been reported to have high surface area and high adsorption performance for carbon dioxide. However, due to their high cost and low thermal stability, further research is needed for their commercialization. In this study, we synthesized an adsorbent by physically mixing activated carbon and a metal-organic framework, Cu-BTC, and compared the surface properties and carbon dioxide adsorption performance of the adsorbent depending on the activated carbon ratio. We observed the surface morphology of the adsorbent using scanning electron microscopy (SEM) and measured the carbon dioxide adsorption uptakes at room temperature using carbon dioxide isotherm adsorption experiments and thermogravimetric analysis. We also compared the surface area characteristics of the synthesized adsorbent using nitrogen adsorption analysis.