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Journal of Inorganic Materials

Journal of Inorganic Materials >

2007 , Vol. 22 >Issue 5: 843 - 846

DOI: https://doi.org/10.3724/SP.J.1077.2007.00843

Research Paper

Preparation and Characterization of H2Ti4O9 Nanocrystals

  • WANG Jin-Shu ,
  • LI Hui ,
  • YIN Shu ,
  • SATO Tsugio
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  • 1. School of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China; 2. Division of Advanced System, Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan

Received date: 2006-09-11

  Revised date: 2006-11-16

  Online published: 2007-09-20

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Abstract

H2Ti4O9 nanocrystals with high specific surface areas were prepared by delamination and precipitation process through ball milling combined with ion exchange reaction. The samples were characterized by X-ray powder diffraction, transmission electron microscope, thermal analysis, N2 adsorption-desorption isotherm, and absorption spectrum. The crystallites of Ti4O92- in the form of titania nanosheets have lateral size less than 50nm. The specific surface area of H2 Ti4O9 nanocrystals depends on pH values of precipitation solution and ball milling time. The specific surface area of H2 Ti4O9 nanocrystals prepared by ball-milling of K2Ti4O9 for 2h and suspending in 1mol/L HCl followed by precipitation at pH=8 can reach 328.4m2·g-1.

Key words： H2Ti4O9; nanocrystal; ball-milling; ion exchange

Cite this article

WANG Jin-Shu , LI Hui , YIN Shu , SATO Tsugio . Preparation and Characterization of H2Ti4O9 Nanocrystals[J]. Journal of Inorganic Materials, 2007 , 22(5) : 843 -846 . DOI: 10.3724/SP.J.1077.2007.00843

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