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Effect of seed particles on crystallization and crystallite size of anatase TiO2 nanocrystals by solvothermal treatment
| Content Provider | Semantic Scholar |
|---|---|
| Author | Tseng, Wenjea J. Kao, Shih-Mou |
| Copyright Year | 2015 |
| Abstract | Abstract Commercial TiO 2 nanoparticles (Degussa P25) with a mean diameter of ca. 20 nm and of predominately anatase phase were deliberately added in sol–gel-prepared amorphous TiO 2 particles as “seed” before being subjected altogether to a mild solvothermal treatment over a temperature range from 100 to 200 °C. The presence of seed particles reduced the crystallization temperature moderately from 127.2 to 122.4 °C when the seed of up to 10 wt.% was added, resulted in crystalline anatase nanocrystals. On the other hand, crystallite size of the anatase nanocrystals increased up to an average of 28 nm (+40%) with the seed. This seed-induced grain growth appeared to occur preferentially at vicinity of the seed particles. As temperature was raised above the crystallization temperature (∼120 °C), homogeneous nucleation and growth of the anatase TiO 2 nanocrystals prevailed so that a massive anatase structure with a crystal dimension of 8–12 nm resulted after the solvothermal treatment. |
| Starting Page | 1225 |
| Ending Page | 1229 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.apt.2015.06.004 |
| Volume Number | 26 |
| Alternate Webpage(s) | http://ir.lib.nchu.edu.tw/bitstream/11455/93974/1/S0921883115001.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.apt.2015.06.004 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
