The steady rise of atmospheric CO2 due to fossil fuel use has resulted in increasing global average temperatures. Due to environmental concerns and developing economic incentives, a number of technologies have been developed for transforming captured CO2 to more useful molecules as a feedstock for other chemical processes. One promising example is the use of non-thermal plasmas to convert CO2 into CO and O2, with the product CO of use to other industrial or synthetic applications. The dielectric barrier discharge (DBD) reactor is commonly used for this reaction, as it relatively straightforward to construct and is capable of producing a non-thermal plasma with relatively high-energy electrons (1-10 eV) and low bulk gas temperatures. 9, These high energy electrons are capable of directly splitting CO2 into CO and O2. Particulate heterogeneous catalysts composed of metal oxide materials such as ZnO, Al2O3, or multi-metal oxides are often packed inside the discharge region of the reactor to improve both conversion rates and efficiency. The catalyst structure is commonly a distribution of chemically-synthesized catalyst particles either packed into the plasma volume or deposited onto an inert foam, wool, or bead support material. Particles are generally deposited onto the support by capillary solvent adsorption or vapor deposition techniques. The structure of the support and catalyst has been shown to influence the overall CO2 conversion by affecting the true active catalytic surface area, the flow dynamics of reactant gases, and the electric field inside the discharge region. While the use of chemically synthesized, particulate catalysts may allow for convenient control during synthesis, the heterogeneity of the distribution can have significant effects on the process.