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[摘要]：We report for the first time the multi-gram scale solution growth of alpha-aluminium fluoride trihydrate (alpha-AlF3 center dot 3H(2)O) nanorods (NRs) under low supersaturation conditions, and their conversion to porous beta-AlF3 NRs. Electron microscopy analysis shows that the NRs yielded from the optimized conditions have an average length of 1.9 mu m and diameter of 223 nm. Nanoparticle morphology can also be achieved by tuning the supersaturation through several experimental parameters such as [Al3+] and [HF]/[Al3+] and H2O/(2)-propanol vol. ratio. Moderate thermal treatment of the as-synthesized alpha-AlF3 center dot 3H(2)O NRs in air atmosphere (5 h at 500 degrees C) results in pure beta-AlF3 porous NRs, which may be useful as catalysts. |
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