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Plasma Sci. Technol. ›› 2019, Vol. 21 ›› Issue (8): 085504.doi: 10.1088/2058-6272/ab15e5

• Plasma Technology • Previous Articles     Next Articles

Enhanced CO2 decomposition via metallic foamed electrode packed in self-cooling DBD plasma device

Shengjie ZHU (朱圣洁)1,3, Amin ZHOU (周阿敏)2,3, Feng YU (于锋)1,4, Bin DAI (代斌)1 and Cunhua MA (马存花)1,4   

  

  1. 1 School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, People’s Republic of China
    2 Laboratory of Plasma Physical Chemistry, Dalian University of Technology, Dalian 116024, People’s Republic of China
  • Received:2018-12-24 Revised:2019-04-02 Accepted:2019-04-04 Published:2019-06-04
  • Supported by:
    This work was financially supported by the National Natural Science Foundation of China (No. 21663022).

Abstract: A self-cooling dielectric barrier discharge reactor, packed with foamed Cu and Ni mesh and operated at ambient conditions, was used for the composition of CO2 into CO and O2. The influences of power, frequency, and other discharge characteristics were investigated in order to have a better understanding of the effect of the packing materials on CO2 decomposition. It is found that porous foamed Cu and Ni not only played a role as the carrier of energy transformation and electrode distributed in discharge gaps but also promoted the equilibrium shifting toward the product side to yield more CO by consuming some part of O2 and O radicals generated from the decomposition of CO2. The maximum CO2 decomposition rates of 48.6% and 49.2% and the maximum energy efficiency of 9.71% and 10.18% were obtained in the foamed Ni and Cu mesh, respectively.

Key words: dielectric barrier discharge, CO2 decomposition, metallic foamed materials, energy efficiency