Skip to main content Accessibility help
×
Home

Molecular Engineered Porous Nanocomposites of Metal Oxide and Clay Using Surfactants

  • Huai Y. Zhu (a1) and Gao. Q. Lu (a1)

Abstract

A novel synthesis route of metal oxide nanoparticles dispersed in a silicate framework is reported here. This composite nanostructure is highly thermally stable and porous, rendering large surface area and rich surface chemistry promising for catalytic applications. Aqueous solutions of metal salts were used as the precursors of the nanoparticles, and added in an aqueous dispersion of synthetic clay, laponite, in which the clay exists in exfoliated silicate sheets. Acid leaching of the clay sheets occurs in the reaction due to the strong acidity of the metal salt solution. Meanwhile, the metal hydrate ions polymerise because of the high pH of the clay dispersion and condense on the leached silicates. This mechanism is distinctly different from conventional pillaring process. The nanocomposites of various oxides and binary oxides were synthesised. By introducing polyethylene oxide surfactants, we obtained mesoporous nanocomposites with very large surface areas (400-900 m2/g) and porosity. These nanocomposites are superior catalysts or catalyst supports over of microporous pillared clays [1-3] due to their structure and surface properties.

Copyright

References

Hide All
1. Burch, R. (Ed.), “Pillared Clays”, Catal Today, Vol 2–3, (Elsevier, New York, 1988).
2. Pinnavaia, T.J., Science, 220, 365–71 (1983).
3. Gil, A.., Gandia, L.M., and Vicente, M.A., Catal. Rev. 42 (1/2) 145212 (2000).
4. Baes, C.F. and Mesmer, R.E., The Hydrolysis of Cations, (Wiley & Sons, New York, 1986).
5. Thompson, D.W. and Butterworth, J.T., J. Colloid Interface Sci. 151, 236243 (1992).
6. Ohtsuka, K., Hayashi, Y. and Suda, M., Chem. Mater. 5, 18231829 (1993).
7. Schoonheydt, R.A., Leeman, H., Scorpion, A., Lenotte, I. and Grobet, P., Clays Clay Miner. 42, 518525 (1994).
8. Kresge, C.T., Leonowicz, M.E., Roth, W.J., Vartuli, J.C. and Beck, J.S., Nature, 359, 710712 (1992)
9. Inagaki, S., Fukushima, Y., and Kuroda, K., J. Chem. Soc. Chem. Commun. 680–682. (1993).
10. Huo, Q., et al, Nature, 368, 317321 (1994).
11. Corma, A., Mifsud, A., and Sanz, E., Clay Miner. 22, 225232 (1987).
12. Mokaya, R. and Jones, W., J. Catal. 153, 7685 (1995).
13. Kaviratna, H. and Pinnavaia, T.J., Clays Clay Miner. 42, 717723 (1994).
14. Wilson, M.A., NMR Techniques and Applications in Geochemistry and Soil Chemistry. (Pergamon Press, Oxford, 1987)
15. Komarneni, S., Fyfe, C.A., Kennedy, G.J. and Strobl, H., H. J. Am. Ceram. Soc. 69, C45–C47 (1986).
16. Newman, A.C.D., Chemistry of Clays and Clay Minerals, (Mineralogical Society, Longman Sci & Tech., UK, 1987) p161.
17. Liu, G., Li, X., Zhao, J., Hidaka, H., and Serpone, N., Environ. Sci. Technol. 34, 39823990 (2000).
18. Fujishima, A., Hashimoto, K. and Watanabe, T., TiO2 Photocatalysis Fundamentals and Applications, (BKC, Inc., Tokyo, 1999) pp5089.
19. Linsebigler, A. L., Lu, G.Q., and Yates, J.T., Chem. Rev. 95, 735758 (1995).
20. Antonelli, D.M. and Ying, J.Y., Angew. Chem., Int. Ed. Engl. 34, 20142017 (1995).
21. Yang, P., Zhao, D.Y., Margolese, D.I., Chmelka, B.F. and Stucky, G.D., Nature 396, 152155 (1998).
22. Ying, J.Y., Mehnert, C.P. and Wong, M.S., Synthesis and applications of supramoleculartemplated mesoporous materials. Angew. Chem., Int. Ed, 38, 5677 (1999).

Related content

Powered by UNSILO

Molecular Engineered Porous Nanocomposites of Metal Oxide and Clay Using Surfactants

  • Huai Y. Zhu (a1) and Gao. Q. Lu (a1)

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.