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Chin. Phys. B, 2019, Vol. 28(3): 036801    DOI: 10.1088/1674-1056/28/3/036801

Full filling of mesoporous carbon nanotubes by aqueous solution at room temperature

Xiao-Na Ren(任晓娜), Min Xia(夏敏), Qing-Zhi Yan(燕青芝), Chang-Chun Ge(葛昌纯)
School of Materials Science and Technology, University of Science and Technology Beijing, Beijing 100083, China

Carbon nanotubes (CNTs) have the ideal structure to be used as templates for nanomaterials, especially for nanowires, and the tungsten nanowire is an important nanomaterial that is used as a strengthening phase. Therefore, we have proposed to apply mesoporous CNT (mCNT) as a template to prepare tungsten nanowires. However, the tungsten precursor should fill the hollow tube of mCNT firstly, and very few related studies have been reported. In this paper, we have systematically studied the filling process of ammonium metatungstate (AMT) aqueous solution. The results reveal that owing to the mesopores in the mCNT sidewall, the AMT can be encapsulated into the tube at room temperature (RT) and we can fully fill it without destroying the structure. In addition, vibration and solute concentration are also important factors. Besides, the mesoporous sidewall and hollow tubular core structure of mCNT are prerequisites to realize full filling. Furthermore, tungsten nanowires have been obtained after reduction of AMT in mCNTs.

Keywords:  mesoporous carbon nanotube (mCNT)      capillarity      aqueous solution      tungsten nanowire  
Received:  20 August 2018      Revised:  10 January 2019      Accepted manuscript online: 
PACS:  68.03.Cd (Surface tension and related phenomena)  
  62.10.+s (Mechanical properties of liquids)  
  61.48.De (Structure of carbon nanotubes, boron nanotubes, and other related systems)  
  81.20.-n (Methods of materials synthesis and materials processing)  
Corresponding Authors:  Xiao-Na Ren, Min Xi, Chang-Chun Ge     E-mail:;;

Cite this article: 

Xiao-Na Ren(任晓娜), Min Xia(夏敏), Qing-Zhi Yan(燕青芝), Chang-Chun Ge(葛昌纯) Full filling of mesoporous carbon nanotubes by aqueous solution at room temperature 2019 Chin. Phys. B 28 036801

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