Controlled transformation of ZnO nanobelts into CoO/Co3O4 nanowires
SCIE
SCOPUS
- Title
- Controlled transformation of ZnO nanobelts into CoO/Co3O4 nanowires
- Authors
- Na, CW; Woo, HS; Kim, HJ; Jeong, U; Chung, JH; Lee, JH
- Date Issued
- 2012-02
- Publisher
- ROYAL SOC CHEMISTRY
- Abstract
- Highly crystalline CoO and Co3O4 nanowires were prepared by vapor-phase conversion of ZnO nanobelts. The ZnO nanobelts were successfully transformed into highly crystalline CoO nanowires by thermal evaporation of CoCl2 at 700 degrees C in Ar, which were subsequently converted to Co3O4 nanowires by oxidative annealing at 600 degrees C. The reactions at 500 and 550 degrees C in 0.5% O-2 led to the formation of well-defined oxide p-n junction nanostructures such as Co3O4-decorated ZnO nanobelts and ZnO-ZnCo2O4 core-shell nanocables, respectively, as the reaction intermediates. The evolutions of phase and residual Zn component during the conversion were investigated in relation to the reaction temperature and oxygen partial pressure.
- Keywords
- VAPOR TRANSPORT; CO3O4; NANOSTRUCTURES; NANOTUBES; OXIDATION; NANORODS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/13449
- DOI
- 10.1039/C2CE06681E
- ISSN
- 1466-8033
- Article Type
- Article
- Citation
- CRYSTENGCOMM, vol. 134, no. 10, page. 3737 - 3741, 2012-02
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