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Fe2O3 Nanoparticles within Mesoporous MCM-48 Silica: In Situ Formation and Characterization
Abstract
Iron(III) oxide nanoparticles were synthesized within mesoporous MCM-48 silica phases. By using multiple cycles of wet impregnation, drying, and calcination procedures, it was possible to form haematite nanoparticles almost exclusively within the pore system. Nitrogen sorption measurements still revealed mesoporosity for the host/guest compound accompanied by a reduction of the BET surface area and the pore radius, both being indications of a decoration/coating of the inner surface of the silica walls. X-ray absorption spectroscopic measurements could prove the existence of small, slightly disordered iron(III) oxide nanoparticles. HRTEM investigations could show that the mesoporous host structure was still intact after the treatment. SAED (selected area electron diffraction) data did not reveal superstructure reflections or any diffuse intensity out of the Bragg reflections, indicating that the noncrystalline Fe 2 O 3 is randomly distributed within the pores.
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Cites
Sing, K. S. W. (1985) · Pure and Applied Chemistry · doi:10.1351/pac198557040603 · Cited by 24,485
Cited by
Ordered mesoporous materials in catalysis
Taguchi, A., & Schüth, F. (2005) · Microporous and Mesoporous Materials · doi:10.1016/j.micromeso.2004.06.030 · Cited by 2,119
SOMC@PMS. Surface Organometallic Chemistry at Periodic Mesoporous Silica
Anwander, R. (2001) · Chemistry of Materials · doi:10.1021/cm0111534 · Cited by 320
Metadata
- Authors
- Fröba, M., Köhn, R., Bouffaud, G., Richard, O., & van Tendeloo, G.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 1999-09-11
- Volume
- 11
- Issue
- 10
- Pages
- 2858-2865
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W1992232215
- Cited by
- 239
- References
- 1
- FWCI
- 10.58
- Type
- journal article
- Language
- en
- Open access
- closed
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- Fröba, M., Köhn, R., Bouffaud, G., Richard, O., & van Tendeloo, G. (1999). Fe2O3 Nanoparticles within Mesoporous MCM-48 Silica: In Situ Formation and Characterization. Chemistry of Materials. https://doi.org/10.1021/cm991048i
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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