Effect of the surface configuration on the oxidation of bismuth nanowire
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan 70101, Taiwan (China)
Incorporating nanoprocessing into the metal oxidation, it was a facile way to synthesize functional oxide with desired nanostructure. In this work, {delta}-Bi{sub 2}O{sub 3} nanowires were successfully fabricated by the oxidation of electroplated Bi nanowires at 350deg. C. {delta}-Bi{sub 2}O{sub 3} is the high-temperature phase of Bi{sub 2}O{sub 3} and only stable at 723-823deg. C. Partially oxidized nanowires showed core-shell structure composed of metallic Bi and {delta}-Bi{sub 2}O{sub 3}. To investigate the mechanism of oxidation reaction, the Bi/Bi{sub 2}O{sub 3} interface was characterized by high resolution transmission electron microscopy (HRTEM). HRTEM images showed rapid growth of oxide layer on (21-bar 0) plane of rhombohedral Bi metal. The coherency between (102-bar ) of metallic Bi and (100) of cubic Bi{sub 2}O{sub 3} was observed. A schematic model was also used to describe the oxidation process. The coherency Bi and Bi{sub 2}O{sub 3} and the stabilization of high-temperature (fluorite structure) Bi{sub 2}O{sub 3} were also discussed based on this model.
- OSTI ID:
- 20895262
- Journal Information:
- Materials Research Bulletin, Vol. 41, Issue 9; Other Information: DOI: 10.1016/j.materresbull.2006.02.037; PII: S0025-5408(06)00084-5; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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