A new method to prepare high-surface-area N-TiO2/activated carbon |
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| Authors: | D HuangY Miyamoto J DingJ Gu S ZhuQ Liu T FanQ Guo D Zhang |
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| Affiliation: | a State Key Lab of Metal Matrix Composites, Shanghai Jiaotong University, Shanghai 200030, PR Chinab Toyo Tanso Joint Research Chair, Joining and Welding Research Institute, Osaka University, Osaka 567-0047, Japan |
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| Abstract: | A new method, combining impregnation and vapor-hydrolysis, was developed to prepare hybrid photocatalyst: nitrogen doped TiO2 coated activated carbon (N-TiO2/AC). The activated carbon (AC) was impregnated into titanium tetraethoxide/urea/methanol solution, and then the impregnated AC powder was kept in water vapor at 90 °C for 3 h for hydrolysis. Then it was calcinated to fabricate N-TiO2/AC. Transmission electron microscopy (TEM) results showed that the nitrogen doped TiO2 (N-TiO2) in the as-synthesized hybrid was anatase TiO2 powder with 10-20 nm in grain size, and the bandgap was about 3.08 eV. Moreover, the hybrid photocatalyst (8 wt.% N-TiO2) had high specific surface area that was up to 1321 m2/g. The hybrid photocatalyst is expected to have high photocatalytic performance with visible irradiation. |
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| Keywords: | Nitrogen-doped TiO2 Activated carbon Low-impregnation impregnation High surface area |
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