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ZnCl₂ salt as both molten medium and mineralizer in ambient pressure synthesis of metastable corundum-type In₂O₃ nanocrystals
- Feng, Xin, Yang, Wenwen, Tang, Qingli, Zhang, Ying, Wang, Gangling, Shi, Wen, Fang, Jianhui, Zhou, Jing, Shi, Liyi, Yan, Wei
- Powder technology 2012 v.221 pp. 164-167
- X-radiation, additives, nanocrystals, photoluminescence, scanning electron microscopy, spectroscopy, transmission electron microscopy
- At ambient pressure, metastable corundum-type In₂O₃ nanocrystals were successfully synthesized with ZnCl₂ molten salt assisted calcination above 500°C. The products were characterized by X-ray powder diffraction, transmission electron microscopy, scanning electron microscopy and photoluminescence spectroscopy. For the first time, we observed the formation of h-In₂O₃ with the aid of inorganic salt. The results show that ZnCl₂ salt has significant effects on the formation of h-In₂O₃, which acted not only as a molten medium but also a mineralizer for the induced corundum phase. The approach requires neither complex apparatus and sophisticated procedures nor any organic additives during the reaction. The photoluminescence properties of In₂O₃ nanocrystals were also investigated.