Carbondioxide capture by copper oxide nanoparticles decorated supports

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2016

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Börüban, Cansu

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Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities such as combustion of fossil fuels (coal, natural gas, and oil) for energy and transportation. The amount of CO2 released to the atmosphere can be decreased by using CO2 adsorbing materials. Zeolites and activated carbons outshine with their high surface areas for the purpose of adsorbing gas molecules. Their highly porous, three dimensional structures makes them great host to trap gas molecules and purifying industrial gases. Modifying the surface of these dry adsorbents with metal oxide nanoparticles which preferentially capture certain gases is considered as an attractive route to enhance their selectivity as well as their gas trapping and storing efficiency. In this study, improving the CO2 adsorption and storing ability of activated carbon and zeolite by integrating copper oxide nanoparticles onto the surface of these supports was aimed. The synthesis of copper oxide (Copper(I) oxide (Cu2O) and Copper(II) oxide (CuO)) nanoparticles were synthesized on the adsorbent surfaces by precipitation method. Characterization of copper oxide decorated adsorbents’ morphological, chemical and gas capturing capabilities were performed by X-Ray Diffraction Spectroscopy (XRD), Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Photoelectron Spectroscopy (XPS), Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDX). Analysis of adsorbed CO2 was done by Thermo gravimetric Analysis (TGA), and Brunauer-Emmett-Teller (BET) studies. The developed hybrid system has provided the adsorption of CO2 on the copper oxide nanoparticles by chemically compared to its relatively weak adsorption on zeolite and activated carbon.

Subject Keywords

Copper oxide., Carbon dioxide., Zeolites., Adsorption., Nanoparticles., Surface chemistry.

URI

http://etd.lib.metu.edu.tr/upload/12619725/index.pdf
https://hdl.handle.net/11511/25426

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

C. Börüban, “Carbondioxide capture by copper oxide nanoparticles decorated supports,” M.S. - Master of Science, Middle East Technical University, 2016.