摘要
In the present study, nanocrystalline tungsten oxide powders were prepared by a plasma arc gas condensation technique under a controlled oxygen environment with Ar/O2 ratio ranged from 1/1 to 100/1. It is noted that stoichiometric tungsten oxide nanocrystalline powders (WO3) can be prepared under an Ar/O2 ratio ranged from 1/1 to 99/1, while nonstoichiometric tungsten oxide nanopowders (WO3-x) were synthesized under an Ar/O2 ratio of 100/1. The as-prepared WO3 powders were examined by X-ray diffraction (XRD), Raman scattering, thermal gravimetric analysis (TGA), and high-resolution transmission electron microscope (HRTEM). Experimental results showed that yellowish WO3 nanopowders prepared using different Ar/O2 ratio exhibited slight differences.
原文 | 英語 |
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頁(從 - 到) | 423-428 |
頁數 | 6 |
期刊 | International Journal of Refractory Metals and Hard Materials |
卷 | 26 |
發行號 | 5 |
DOIs | |
出版狀態 | 已發佈 - 9月 2008 |
對外發佈 | 是 |
ASJC Scopus subject areas
- 金屬和合金