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Hierarchical Macro-Mesoporous Silica Monolith

Published online by Cambridge University Press:  01 February 2011

Tomohiko Amatani ,
Kazuki Nakanishi ,
Kazuyuki Hirao  and
Tetsuya Kodaira
Tomohiko Amatani
Affiliation:
Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo-ku, Kyoto 615–8510, Japan.
Kazuki Nakanishi
Affiliation:
Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo-ku, Kyoto 615–8510, Japan.
Kazuyuki Hirao
Affiliation:
Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo-ku, Kyoto 615–8510, Japan.
Tetsuya Kodaira
Affiliation:
Nanoarchitectonics Research Center, National Institute of Science and Technology, 1–1–1, Higashi, Tsukuba-shi, Ibaraki 305–8565, Japan. PRESTO, JST, Japan
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Abstract

Monolithic pure silica gels with hierarchical macro-mesoporous structure have been synthesized via spontaneous sol-gel process from silicon alkoxide using a structure-directing agent and a micelle-swelling agent. Monolithic body with well-defined co-continuous macropores is a result of concurrent phase separation and sol-gel transition induced by the polymerization reaction, whereas the mesopores are templated by the cooperative self-assembly of inorganic species, a structure-directing agent and a micelle-swelling agent. The following removal of surfactants by heat-treatment gives silica gels with hierarchical and fully accessible pores in discrete size ranges of micrometers and nanometers. The highly ordered 2D-hexagonal arrays of mesopores have been confirmed by X-ray diffraction measurements and FE-SEM observations. Furthermore, by further additions of the micelle-swelling agent, the mesostructural transition from well-ordered 2D-hexagonal arrays to mesostructured cellular foams (MCF) have been induced accompanied by minor modifications of the micrometer-range structure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 847: Symposium EE – Organic/Inorganic Hybrid Materials , 2004 , EE9.6
Copyright
Copyright © Materials Research Society 2005

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References

REFERENCES

1. Kresge, C. T.; Leonowicz, M. E.; Roth, W. J.; Vartuli, J. C.; Beck, J. S. Nature 1992, 359, 710.Google Scholar
2. Beck, J. S.; Vartuli, J. C.; Roth, W. J.; Leonowicz, M. E.; Kresge, C. T.; Schmitt, K. D.; Chu, C. T. W.; Olson, D. H.; Sheppard, E. W.; McCulle, S. B.; Higgins, J. B.; Schlender, J. L. J. Am. Chem. Soc. 1992, 114, 10834.Google Scholar
3. Inagaki, S.; Fukushima, Y.; Kuroda, K. J. Chem. Soc., Chem. Commun. 1993, 8, 680.Google Scholar
4. Nakanishi, , K. J. Porous Mater. 1997, 4, 67–112.Google Scholar
5. Tanaka, N.; Kobayashi, H.; Nakanishi, K.; Minakuchi, H.; Ishizuka, N. Anal. Chem. 2001, 73, 420A.Google Scholar
6. Tanaka, N.; Kobayashi, H.; Ishizuka, N.; Minakuchi, H.; Nakanishi, K.; Hosoya, K.; Ikegami, T. J., Chromatogr. A. 2002, 965, 35.Google Scholar
7. Nakanishi, K.; Kobayashi, Y.; Amatani, T.; Hirao, K.; Kodaira, T., Chem. Mater. 2004, 16, 3652.Google Scholar
8. Sato, Y.; Nakanishi, K.; Hirao, K.; Jinnai, H.; Shibayama, M.; Melnichenko, Y.B.; Wignall, G.D. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2001, 187/188, 117–122.Google Scholar
9. Nakanishi, K.; Sato, Y.; Ruyat, Y.; Hirao, K. J. Sol-Gel Sci. and Technol. 2003, 26, 567–570.Google Scholar
10. Shi, Z.-G.; Feng, Y.-Q.; Xu, L.; Da, S.-L.; Ren, Y.-Y. Microporous and Mesoporous Mater. 2004, 68, 55.Google Scholar
11. Zhao, D.; Feng, J.; Huo, Q.; Melosh, N.; Fredrickson, G. H.; Chmelka, B. F.; Stucky, G. D., Science 1998, 279, 548.Google Scholar
12. Ikeda, T.; Kodaira, T.; Oh, T.; Nisawa, A. Microporous Mesoporous Mater. 2003, 57, 249.Google Scholar
13. Zhao, D.; Sun, J.; Li, Q.; Stucky, G.D. Chem. Mater. 2000, 12, 275–279 Google Scholar
14. Schmidt-Winkel, P.; Lukens , Jr; W.W., , Yang, P.; Margolese, D.I.; Lettow, J.S.; Ying, J.Y.; Stucky, G.D. Chem. Mater. 2000, 12, 686–696.Google Scholar
15. Schmidt-Winkel, P.; Glinka, C.J.; Stucky, G.D.; Langmuir. 2000, 16, 356–361.Google Scholar