Skip to main content
×
×
Home

Preparation of a Reduced Layered Tungstic Acid HxW2O7 via Acid Treatment of Bi2W2O9 in the Presence of Sn2+ Ions

  • Seiichi Tahara (a1), Takakazu Minato (a2), Nobuhiro Kumada (a3), Shigenobu Hayashi (a4) and Yoshiyuki Sugahara (a5)...
Abstract

A reduced layered tungstic acid with a double-octahedral structure was prepared by acid treatment of an Aurivillius-type Bi2W2O9 in the presence of Sn2+ ions. While the color of the product formed by acid treatment with no Sn2+ ions present, H2W2O7, was yellow, a blue powder was obtained after the acid treatment in the presence of Sn2+ ions. No notable change in the morphology was observed after acid treatment. The X-ray diffraction pattern of the product acid-treated in the presence of Sn2+ ions was very similar to that of H2W2O7. Essentially all the Bi3+ ions were lost upon acid treatment, indicating the occurrence of selective leaching of bismuth oxide sheets in Bi2W2O9. A UV-visible absorption spectrum and XPS analysis demonstrated that the W6+ ions were partially reduced to W5+ ions, and the number of protons in the product was correspondingly 2.4 per [W2O7]. These results suggest the successful formation of a reduced layered tungstic acid, H2.4W2O7.

Copyright
References
Hide All
1 Cheng, K.H. and Whittingham, M. S., Solid State Ionics, 1, 151 (1980).
2 Glemser, O. and Sauer, F., Z. Anorg. Chem., 252, 160 (1943).
3 Dickens, P. G. and Hurditch, R. J., Nature., 215, 1266 (1967).
4 Straumanis, M. E., J. Am. Chem. Soc., 71, 679 (1949).
5 Brown, B. W. and Banks, E., J. Am. Chem. Soc., 76, 963 (1954).
6 Kudo, M., Ohkawa, H., Sugimoto, W., Kumada, N., Liu, Z., Terasaki, O. and Sugahara, Y., Inorg. Chem., 42, 4479 (2003).
7 Schaak, R. E. and Mallouk, T. E., Chem. Commun., 706 (2002).
8 Tahara, S. and Sugahara, Y., Recent Res. Devel. Inorg. Chem., 4, 13 (2004).
9 Sugimoto, W., Shirata, M., Sugahara, Y. and Kuroda, K., J. Am. Chem. Soc., 121, 11601 (1999).
10 Sugimoto, W., Shirata, M., Kuroda, K. and Sugahara, Y., Chem. Mater., 14, 2946 (2002).
11 Tsunoda, Y., Shirata, M., Sugimoto, W., Liu, Z., Terasaki, O., Kuroda, K. and Sugahara, Y., Inorg. Chem., 40, 5768 (2001).
12 Champarnaud-Mesjard, J.-C., Flit, B. and Watanabe, A., J. Mater. Chem., 9, 1319 (1999).
13 Hollinger, G., Duc, T. M. and Deneuville, A., Phys. Rev. Lett. 37, 1564 (1976).
14 Gerard, P., Deneuville, A. and Courths, R., Thin Solid Films, 71, 221 (1980).
15 Gutíerrez-Alejandre, A., Ramírez, J. and Busca, G., Catal. Lett., 56, 29 (1998).
16 Flisch, T. H. and Mains, G. M., J. Chem. Phys., 76, 780 (1982).
17 Wanlass, D. R. and Sienko, M. J., J. Solid State Chem., 12, 362 (1975).
18 Garif'yanov, N.N., Vavilova, E.L., Physica C, 383, 417 (2003).
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed