Abstract
In this study, phase transformations from lepidocrocite titania nanosheets (L-TiO2) to rutile (R-TiO2) and anatase (A-TiO2) have been systematically investigated as a function of the preparation conditions, such as pH and freeze drying, and as a function of the temperature treatment. We have found that the transformation of (L-TiO2) into rutile takes place upon freeze drying treatment. We report that temperature determined the final phase-structure in the transition phase of the L-TiO2 nanosheets into TiO2 nanoparticles, while the pH determined the final morphology and particle size. Based on the experimental results, two different transition pathways of dissolution-recrystallization and topologically rolling transition have been proposed. Our results give a full map of phase transition and morphology evolution of L-TiO2 to R-TiO2/A-TiO2 that can provide guideline to new materials design, especially for the photocatalysts.
Original language | English |
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Pages (from-to) | 3298-3304 |
Journal | Crystal Growth and Design |
Volume | 19 |
Issue number | 6 |
DOIs | |
Publication status | Published - 23 Apr 2019 |
ASJC Scopus subject areas
- General Chemistry
- General Materials Science
- Condensed Matter Physics