Synthesis of Mesoporous Silica Monoliths with Embedded Nanoparticles

Journal of Nanoscience and Nanotechnology

Volumn 1, Issue 2, 2001, Pages 129-132

  Khushalani, Deepa ^a   Hasenzahl, Steffen ^b   Mann, Stephen ^a  

^a UNIVERSITY OF BRISTOL   (United Kingdom)

^b EVONIK INDUSTRIES AG   (Germany)

Author keywords

Mesoporous Silica; Nanocomposites; Nanoparticles

Indexed keywords

ALCOHOL; CHLORIDE; GOLD; SILICON DERIVATIVE; SILICON DIOXIDE; SILICON TETRACHLORIDE; ZEOLITE;

ARTICLE; CHEMISTRY; COLLOID; CONFORMATION; CRYSTALLIZATION; ELECTRON MICROSCOPY; GEL; MATERIALS TESTING; METHODOLOGY; NANOTECHNOLOGY; PARTICLE SIZE; POROSITY; SURFACE PROPERTY; SYNTHESIS; X RAY DIFFRACTION;

CHLORIDES; COLLOIDS; CRYSTALLIZATION; ETHANOL; GELS; GOLD; MATERIALS TESTING; MICROSCOPY, ELECTRON; MOLECULAR CONFORMATION; NANOTECHNOLOGY; PARTICLE SIZE; POROSITY; SILICON COMPOUNDS; SILICON DIOXIDE; SURFACE PROPERTIES; X-RAY DIFFRACTION; ZEOLITES;

EID: 0013277074     PISSN: 15334880     EISSN: None     Source Type: Journal    
DOI: 10.1166/jnn.2001.030     Document Type: Article

References (14)

1. C. T. Kresge, M. E. Leonowiez, W. J. Roth, J. C. Vartuli, and J. S. Beck, Nature 359, 710 (1992).
2. C. Göltner, H. Colfen, and M. Antonietti, Chem. Unserer Zeit 33, 200 (1999).
3. D. Zhao, W. Huo, J. Feng, B. F. Chmelka, and G. D. Stucky, J. Am. Chem. Soc. 120, 6024 (1998).
4. Tetronic Surfactants, Pluronic and Technical Brochure, BASF Corp., Parsipanny, NJ, 1989.
5. W.-H. Zhang, J.-L. Shi, L.-Z Wang, and D.-S. Van, Chem. Mater. 21, 1408 (2000).
6. S. Polarz, B. Smarsly, C. Göltner, and M. Antonietti, Adv. Mater. 12, 1503 (2000).
7. L. M. Bronstein, D. M. Chemyshov, P. M. Valetsky, E. A. Wilder, and R. J. Spontak, Langmuir 16, 8221 (2000).
8. N. A. Melosh, P. Lipic, F. S. Bates, F. Wudl, G. D. Stucky, G. H. Fredrickson, and B. F. Chmelka, Macromolecules 32, 4332 (1999).
9. 4 was added and the mixture was stirred for a further 2-3 h at room temperature. The resulting solution was then poured into a Petri dish, and the ethanol and HCl were allowed to slowly evaporate over an extended period of time. In some cases, the mixture was aged at 40-60 °C for up to 5 days. Calcination of the resulting structure was performed at 540 °C under air at a heating rate of 1 °C/min. The resulting monolith initially had a smooth film structure; however, upon calcination, cracks appeared slowly over the film.
10. B.-J. Zhang, S. A. Davis, and S. Mann, Chem. Commun. 781 (2000).
11. B. V. Enüstun and J. Turkevich, J. Am. Chem. Soc. 85, 3317 (1963).
12. L. M. Liz-Marzán, M. Giersig, and P. Mulvaney, Langmuir 12, 4329 (1996).
13. Synthesis of APTMS functionalized gold nanoparticles: 1 mL of 0.02-M hydrogen tetrachloroaurate(III) trihydrate was added to 94 ml of boiling water. To this, 5 mL of 0.03-M solution of sodium citrate was slowly added and the heating continued until a deep purple colored solution formed. To 5 mL of the resulting, cooled solution, 0.025 mL of a freshly prepared 1-mM APTMS aqueous solution was added and the system was stirred vigorously.
14. 2O. The resultant solution had a pH of between 4 and 5, and was immediately raised to pH 10 by the addition of small amounts of the stock silicate solution.