Paper Title:
Well-Crystallized SnO2 Nanocrystals Homogeneously and Intimately Coated on Multiwalled Carbon Nanotubes by a Simple Surfactant-Free Hydrothermal Method
  Abstract

A simple approach to the in situ deposition of well-crystallized SnO2 nanocrystals on the surface of multiwalled carbon nanotubes (MWCNTs) in the ethanol solution system of SnCl2 was presented in this paper. The well-crystallized SnO2 nanocrystals with small and uniform crystal size (4~5 nm) can be tightly and homogenously coated on the outside surface of the MWCNTs entirely. The prepared nanocomposites were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and nitrogen BET measurements. It is found that the hydrothermal reaction plays an important role for the crystal growth of the SnO2 nanocrystals on the surface of MWCNTs, and the crystallinity of the SnO2 nanocrystals can be controlled by varying the pH value or the hydrothermal reaction time. It is found that a unique structure of leaf-like SnO2 nanosheets hanging on the MWCNTs was obtained when using water as the solvent of SnCl2 instead of ethanol. The gas sensing performance of the SnO2/MWCNTs nanocomposites was also investigated.

  Info
Periodical
Edited by
Yafang Han, Fusheng Pan, Jianmao Tang, Chungen Zhou
Pages
474-481
DOI
10.4028/www.scientific.net/MSF.686.474
Citation
Y.Q. Guo, R. Q. Tan, Z.Y. Cao, W. J. Song, "Well-Crystallized SnO2 Nanocrystals Homogeneously and Intimately Coated on Multiwalled Carbon Nanotubes by a Simple Surfactant-Free Hydrothermal Method", Materials Science Forum, Vol. 686, pp. 474-481, 2011
Online since
June 2011
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