A Large Quantity of ZnO Nanorods Grown at Room Temperature
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- Title
- A Large Quantity of ZnO Nanorods Grown at Room Temperature
- Authors
- Park, SH; Kwak, CH; Seo, SY; Kim, SH; Kim, BH; Park, CI; Park, YW; Han, SW
- Date Issued
- 2009-07
- Publisher
- KOREAN PHYSICAL SOC
- Abstract
- High-quality ZnO nanorods were synthesized on stainless-steel substrates at room temperature in NaCl solutions with NaCl concentrations of 3.5 - 5.0 wt%. The ZnO nanorods were grown from a Zn film on a stainless-steel substrate in a NaCl solution without any extra process. Field-emission scanning electron microscopy images showed that the ZnO formed into rods with a uniform size at a NaCl concentration of 3.5 - 5.0 wt% while the ZnO became plates for NaCl concentration above 9 wt%. The mean sizes of the nanorods grown at 30 and 40 degrees C were about 100 and 70 nm, respectively. High-resolution transmission electron microscopy and selected area electron diffraction measurements demonstrated that the nanorods had a well-ordered wurtzite structure without any extra phase. Extended X-ray absorption fine structure measurements revealed that the initial Zn film on the stainless-steel substrate had a hexagonal close-packed structure and finally became nanorods with a wurtzite structure in a sea water environment. The zinc likely obtained oxygen from the solution, and Na+ and Cl- ions acted as catalysts for the ZnO crystallization.
- Keywords
- ZnO; Nanorod; Structure; Solution growth; NaCl; EXAFS; ABSORPTION FINE-STRUCTURE; EXTENDED X-RAY; EPITAXIAL-GROWTH; THIN-FILMS; ARRAYS; SI; LAYERS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/26131
- DOI
- 10.3938/jkps.55.94
- ISSN
- 0374-4884
- Article Type
- Article
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 55, no. 1, page. 94 - 97, 2009-07
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