Abstract
In this paper, C/N co-doped rich-defect TiO2 photocatalyst (C/N/DBD-TiO2-x) was prepared by DBD plasma discharge treatment in the mixed atmosphere of CO, N2 and H2 for the first time. The oxygen defects, C doping and N doping were successfully introduced by DBD plasma discharge treatment. With the synergy of these three, the forbidden band width was reduced from 3.20 eV to 2.78 eV, and the electron hole pair was rapidly separated and transferred. Meanwhile DBD plasma discharge treatment increased the specific surface area, pore volume and pore size of TiO2. Evaluation results of visible light catalytic performance showed that the degradation rate of MB solution could reach 98.05%. The new plasma discharge method solved the shortcomings and deficiencies of traditional modification methods, which provided a new and more convenient technology for TiO2 modification.
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