| Title |
The co-effect of TiO_2, Cu and Ni Powders for Enhancing the Hydrogen Generation Efficiency using Plasma Technology |
| Authors |
박재윤(Park, Jae-Yoon) ; 김종석(Kim, Jong-Suk) ; 정장근(Jung, Jang-Gun) |
| Keywords |
Hydrogen generation ; photocatalystTiO_2 powder ; Ni-TiO_2 catalyst ; Cu-TiO_2 catalyst |
| Abstract |
The research was conducted in order to improve the hydrogen generation efficiency of the electrical plasma technology from tap water by using TiO_2 photocatalyst, mixed Cu - TiO_2 powder, and mixed Ni - TiO_2 powder as the catalysts. Experiments were performed with the pulsed power and nitrogen carrier gas. The result has shown that the hydrogen concentration with the presence of TiO_2 powder was created higher than that of without using photocatalyst. The hydrogen concentration with using TiO_2 was 3012ppm corresponding to the applied voltage of 16kV, while it without using the TiO_2 was 1464ppm at the same condition . The effect of TiO_2 powder was strongly detected at the applied voltages of 15kV and 16kV. This phenomena might be resulted from the co-effect of the pulsed power discharge and the activated state of TiO_2 photocatalyst. The co-effect of the mixed catalysts such as Cu-TiO_2 and Ni-TiO_2 (the mixed photocatalyst TiO_2 and transition metals) were also investigated. The experimental results showed that, Cu and Ni powder dopants were greatly enhancing the activity of the TiO_2 photocatalyst. Under these experimental conditions the extremely high hydrogen concentrations at the optimal point were produced as 4089ppm and 6630ppm, respectively. |