Synthesis of θ-Al2O3 Whiskers with Twins
Abstract
:1. Introduction
2. Experimental Procedure
3. Results and Discussion
4. Conclusions
- θ-Al2O3 whiskers were successfully fabricated by using the hydrothermal method followed by annealing at 1000 °C in the flowing argon using Al2(SO4)3·18H2O, CO(NH2)2 and PEG2000 as the initial materials.
- The optimized molar ratio of Al3+:CO(NH2)2 was determined as 1:6 to obtain the homogeneous AlO(OH) precursor.
- The final morphology of θ-Al2O3 whiskers was derived from the initial microstructure of AlO(OH) precursor.
- θ-Al2O3 whiskers contained twins owing to the phase transformation from tetragonal system to monoclinic system during annealing. The high specific surface area of θ-Al2O3 whiskers was measured as 38.2 m2/g.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Liao, N.; Su, X.; Zhang, H.; Feng, Q.; Grasso, S.; Hu, C. Synthesis of θ-Al2O3 Whiskers with Twins. Metals 2021, 11, 895. https://doi.org/10.3390/met11060895
Liao N, Su X, Zhang H, Feng Q, Grasso S, Hu C. Synthesis of θ-Al2O3 Whiskers with Twins. Metals. 2021; 11(6):895. https://doi.org/10.3390/met11060895
Chicago/Turabian StyleLiao, Nan, Xiaojia Su, Haiwen Zhang, Qingguo Feng, Salvatore Grasso, and Chunfeng Hu. 2021. "Synthesis of θ-Al2O3 Whiskers with Twins" Metals 11, no. 6: 895. https://doi.org/10.3390/met11060895