Journal
MATERIALS LETTERS
Volume 122, Issue -, Pages 86-89Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2014.02.001
Keywords
FeWO4/FeS; Core/shell nanorods; Thermal evaporation; Crystal growth; Microstructure
Funding
- National Natural Science Foundation of China [61274015, 11274052, 51172030]
- Excellent Adviser Foundation in China University of Geosciences from the Fundamental Research Funds for the Central Universities
- National Basic Research Program of China [2010CB923200]
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FeWO4/FeS core/shell nanorods were fabricated on silicon substrate sputtered with approximately 5 nm of iron thin film via simple thermal evaporation of WO3 and S powders at 1000 degrees C in a tube furnace. The as-prepared nanorods are of uniform morphology in large scale with a diameter of 175 +/- 60 nm and a length of 1.4 +/- 0.5 pm. Both the core and shell are of well-crystalline structure. Raman spectroscopy revealed that the active optical phonon modes positioned at 873, 820, 690, 322 and 300 cm(-1) were assigned to FeWO4, and that at 214 cm(-1) to FeS. The growth mechanism of the nanorods was also proposed. (C) 2014 Elsevier B.V. All rights reserved.
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