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The effects of heat-treatment on the structure evolution and crystallinity of ZnTiO3 nano-crystals prepared by Pechini process |
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| Authors: | Yin-Lai Chai Guo-Ju Chen |
| Affiliation: | a Department of Resources Engineering, Dahan Institute of Technology, Hualien 971, Taiwan b Department of Electronic Engineering, National Formosa University, Huwei, Yunlin 632, Taiwan c Department of Materials Science and Engineering, I-Shou University, Kaohsiung 840, Taiwan d Department of Materials Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan |
| Abstract: | Sol-gel technique emphasing the Pechini process has been employed for the preparation of nano-sized ZnTiO3 powders. Results of thermal analysis are given, including both DTA and TG. The decomposition of the precursor proceeded in four major steps, which include dehydration reaction, decomposition, combustion reaction and ZnTiO3 phase formation. The optimum temperature for ZnTiO3 powder calcination is 800 °C, which is determined by calculating the intensity and area of XRD peaks. The TEM observation shows that the powders existed in the mode of polycrystalline structure and the average grain size is about 30 nm. Moreover, FT-IR measurement is given for the relationship of the cationic environment in ZnTiO3 structure during the heat-treatment. |
| Keywords: | A. Nanostructures B. Crystal growth B. Sol-gel chemistry C. X-ray diffraction |
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