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DI Lanbo(底兰波), ZHANG Xiuling(张秀玲), XU Zhijian(徐志坚). Preparation of Copper Nanoparticles Using Dielectric Barrier Discharge at Atmospheric Pressure and its Mechanism[J]. Plasma Science and Technology, 2014, 16(1): 41-44. DOI: 10.1088/1009-0630/16/1/09
Citation: DI Lanbo(底兰波), ZHANG Xiuling(张秀玲), XU Zhijian(徐志坚). Preparation of Copper Nanoparticles Using Dielectric Barrier Discharge at Atmospheric Pressure and its Mechanism[J]. Plasma Science and Technology, 2014, 16(1): 41-44. DOI: 10.1088/1009-0630/16/1/09

Preparation of Copper Nanoparticles Using Dielectric Barrier Discharge at Atmospheric Pressure and its Mechanism

Funds: supported by National Natural Science Foundation of China (No.21173028), the Science and Technology Research Project of Liaoning Provincial Education Department of China (No.L2013464), and the Scientific Research Foundation for the Doctor of Liaoning Province of China (No.20131004)
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  • Received Date: August 29, 2013
  • Dielectric barrier discharge (DBD) cold plasma at atmospheric pressure was used for preparation of copper nanoparticles by reduction of copper oxide (CuO). Power X-ray diffraction (XRD) was used to characterize the structure of the copper oxide samples treated by DBD plasma. Influences of H 2 content and the treating time on the reduction of copper oxide by DBD plasma were investigated. The results show that the reduction ratio of copper oxide was increased initially and then decreased with increasing H 2 content, and the highest reduction ratio was achieved at 20% H 2 content. Moreover, the copper oxide samples were gradually reduced by DBD plasma into copper nanoparticles with the increase in treating time. However, the average reduction rate was decreased as a result of the diffusion of the active hydrogen species. Optical emission spectra (OES) were observed during the reduction of the copper oxide samples by DBD plasma, and the reduction mechanism was explored accordingly. Instead of high-energy electrons, atomic hydrogen (H) radicals, and the heating effect, excited-state hydrogen molecules are suspected to be one kind of important reducing agents. Atmospheric-pressure DBD cold plasma is proved to be an efficient method for preparing copper nanoparticles.
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