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Inhibition of Crystallite Growth in the Sol-Gel Synthesis of Nanocrystalline Metal Oxides
Abstract
Crystal growth upon firing of hydrous transition metal oxide gels can be effectively inhibited by replacing the surface hydroxyl group before firing with another functional group that does not condense and that can produce small, secondary-phase particles that restrict advancing of grain boundaries at elevated temperatures. Accordingly, fully crystallized SnO 2 , TiO 2 , and ZrO 2 materials with mean crystallite sizes of ∼20, 50, and 15 angstroms, respectively, were synthesized by replacing the hydroxyl group with methyl siloxyl before firing at 500°C. An ultrasensitive SnO 2 -based chemical sensor resulting from the microstructural miniaturization was demonstrated.
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Citations
Cited by
Carbon Nanotube−Inorganic Hybrids
Eder, D. (2010) · Chemical Reviews · doi:10.1021/cr800433k · Cited by 819
Aminolysis Route to Monodisperse Titania Nanorods with Tunable Aspect Ratio
Zhang, Z., Zhong, X., Liu, S., Li, D., & Han, M. (2005) · Angewandte Chemie International Edition · doi:10.1002/anie.200500410 · Cited by 236
Karmaoui, M., Jorge, A. B., McMillan, P. F., Aliev, A. E., Pullar, R. C., Labrincha, J. A., & Tobaldi, D. M. (2018) · ACS Omega · doi:10.1021/acsomega.8b02122 · Cited by 222
Facile Synthesis of a Crystalline, High‐Surface‐Area SnO2 Aerogel
Baumann, T. F., Kucheyev, S. O., Gash, A. E., & Satcher, J. H. (2005) · Advanced Materials · doi:10.1002/adma.200500074 · Cited by 145
Metadata
- Authors
- Wu, N.-L., Wang, S.-Y., & Rusakova, I. A.
- Venue
- Science
- Published
- 1999-08-27
- Volume
- 285
- Issue
- 5432
- Pages
- 1375-1377
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2039876694
- Cited by
- 365
- References
- 0
- FWCI
- 5.43
- Type
- journal article
- Language
- en
- Open access
- closed
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- Wu, N.-L., Wang, S.-Y., & Rusakova, I. A. (1999). Inhibition of Crystallite Growth in the Sol-Gel Synthesis of Nanocrystalline Metal Oxides. Science. https://doi.org/10.1126/science.285.5432.1375
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