ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 27    No. 6    June 2017

Controllable preparation of one-dimensional tungsten nano-structure arrays
WANG Chao1, 2, HE Yue-hui1
(1. Powder Metallurgy Research Institute, Central South University, Changsha 410083, China;
2. Central South University Press, Changsha 410083, China
)
Abstract: One-dimensional tungsten nano-structure arrays were successfully prepared by metal-catalyzed chemical vapor deposition method. Controllable preparation of W nanowire arrays was studied. The results show that the diameter of the W nanowire arrays is mainly decided by the influence of the catalyst and N2 flow. The diameter of the W nanowires correspondingly decreases with the reduction in size of the catalyst particles, or the reduction of the N2 flow rate. The length of the W nanowire arrays is mainly influenced by the growth time. The extension of the growth time will correspondingly increase the length of W nanowire arrays, which is beneficial to synthesis extra long W nanowire arrays. The density of the W nanowire arrays is mainly decided by the influence of the catalyst and N2 flow. The density of the W nanowires correspondingly increases with increasing the density of the catalyst particles or decreasing the WO3 particle size. The morphology of W nanowire arrays is mainly influenced by the growth temperature and the substrate material.
Key words: one-dimensional nano-materials; tungsten nano-structure; array; metal catalyzed method; chemical vapor deposition method; controllable preparation
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
Managed by Central South University (CSU)