Effect of Peptization on Densification and Phase-Transformation Behavior of Sol–Gel-Derived Nanostructured Titania

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Kumar, Krishnankutty-Nair P. and Kumar, Jalajakumari and Keizer, Klaas (1994) Effect of Peptization on Densification and Phase-Transformation Behavior of Sol–Gel-Derived Nanostructured Titania. Journal of the American Ceramic Society, 77 (5). pp. 1396-1400. ISSN 0002-7820

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Abstract:Porosity reduction, packing, pore-size distribution, and anatase to rutile phase transformation behavior of nanostructured titania ceramics prepared from both peptized and unpeptized sols were studied and compared using XRD, DSC, and nitrogen-gas physisorption techniques. Precursor gels prepared from the peptized sol had a green density of about 70% after drying at 40°C, whereas the samples prepared from the unpeptized sol had a green density of only 50%. Samples prepared from the peptized sol showed higher sintering and phase transformation rates compared to the unpeptized sols.
Item Type:Article
Copyright:© 1994 Wiley InterScience
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Link to this item:http://purl.utwente.nl/publications/71069
Official URL:http://dx.doi.org/10.1111/j.1151-2916.1994.tb05426.x
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Metis ID: 106866