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https://ir.cnu.edu.tw/handle/310902800/32285
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| 標題: | Effect of catalyst calcination temperature in the visible light photocatalytic oxidation of gaseous formaldehyde by multi-element doped titanium dioxide |
| 作者: | de Luna, Mark Daniel G.
Laciste, Maricris T.
Tolosa, Nolan C.
Lu, Ming-Chun |
| 貢獻者: | Univ Philippines, Dept Chem Engn
Univ Philippines, Natl Grad Sch Engn, Environm Engn Program
Environm Management Bur, Dept Environm & Nat Resources, Environm Res & Lab Serv Div
Chia Nan Univ Pharm & Sci, Dept Environm Resources Management |
| 關鍵字: | Advanced oxidation process
Air purification
Co-doping
Photocatalysis
Volatile organic carbon |
| 日期: | 2018-05 |
| 上傳時間: | 2019-11-15 15:48:08 (UTC+8) |
| 出版者: | SPRINGER HEIDELBERG |
| 摘要: | The present study investigates the influence of calcination temperature on the properties and photoactivity of multi-element doped TiO2. The photocatalysts were prepared by incorporating silver (Ag), fluorine (F), nitrogen (N), and tungsten (W) into the TiO2 structure via the sol-gel method. Spectroscopic techniques were used to elucidate the correlation between the structural and optical properties of the doped photocatalyst and its photoactivity. XRD results showed that the mean crystallite size increased for undoped photocatalysts and decreased for the doped photocatalysts when calcination was done at higher temperatures. UV-Vis spectra showed that the absorption cut-off wavelength shifted towards the visible light region for the as-synthesized photocatalysts and band gap narrowing was attributed to multi-element doping and calcination. FTIR spectra results showed the shifting of OH-bending absorption bands towards increasing wave numbers. The activity of the photocatalysts was evaluated in terms of gaseous formaldehyde removal under visible light irradiation. The highest photocatalytic removal of gaseous formaldehyde was found at 88%. The study confirms the effectiveness of multi-element doped TiO2 to remove gaseous formaldehyde in air by visible light photocatalysis and the results have a lot of potential to extend the application to other organic air contaminants. |
| link: | http://dx.doi.org/10.1007/s11356-018-1720-0 |
| 關聯: | Journal of Molecular Medicine-Jmm, v.25, n.15, SI, pp.15216-15225 |
| 显示于类别: | [環境資源管理系(所)] 期刊論文
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