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Electrical and optical properties of nanocrystalline-Cu-doped TiO2 prepared by precipitationmethod |
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| รหัสดีโอไอ | |
| Creator | Sanchai Kanngan |
| Title | Electrical and optical properties of nanocrystalline-Cu-doped TiO2 prepared by precipitationmethod |
| Publisher | Sakon Nakhon Rajabhat University |
| Publication Year | 2559 |
| Journal Title | SNRU Journal of Science and Technology |
| Journal Vol. | 8 |
| Journal No. | 1 |
| Page no. | 133-137 |
| Keyword | Electrical properties, Optical properties, Precipitation method, Titanium dioxide nanoparticles |
| ISSN | 1906-5965 |
| Abstract | Electrical and optical properties of copper doped onto nanocrystalline of titanium dioxide nanoparticles(TiO2 NPs) prepared by precipitation method were investigated. NaOH of 1 M, copper nitrate trihydrate and powderof TiO2 NPs were used as starting materials by varying ratio of Cu- doped TiO2 from 2 to 30 %wt. The product ofprecipitation process was dried at a temperature of 120 ?C for 6 h and used temperature of 300 ?C for 0.5 h in thecalcination process. After then, the UV-Vis spectroscope was used for analyzing the electrical and optical propertiesof the powder. It was found that the absorbent analysis showed the wavelength in the range of 302 - 309 nm, theabsorbance at 2.05 - 3.88 a.u., and 3.88 at the optimum doping of 15 %wt. The energy band gab is the indirectband gap. It was found that the energy band gap decreased with increasing the doping percent of Cu. However,the doping Cu onto TiO2 NPs exhibits the different wavelengths and energy band gaps from pure TiO2 NPs. Thewavelength of 314 nm and the energy band gap of 3. 33 eV were occurred for an only TiO2 NPs powder whereasthe only Cu powder (100 %wt. Cu-doped TiO2) possess wavelength and energy band gap of 349 nm and 2.45 eV,respectively. Therefore, the doped Cu has affected the electrical and optical properties of TiO2 NPs. |
