Abstract
We synthesised a porous siliceous material via hydrothermal hydrolysis of sodium silicate, using chitosan as a template. As far as we know, this is the first synthesis of siliceous porous material using chitosan as a template in a hydrothermal way. A fibrous material was obtained, whose macroscopic fibres were formed by a spongelike siliceous network with pores having a radius of 0.57 μm. The siliceous walls of the pores were, in turn, of the form of a microporous–mesoporous material; the pore radius distribution was polymodal with maxima at 0.84, 1.0, 1.2 and 1.5 nm and a broad band between 3 and 10 nm. This structure may be due to the aggregation of the hydrated chitosan helices in bundles of parallel fibres with different size and the gelation of the system. The aggregation process might be induced by the addition of silicate.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 12 January 2000/Accepted: 7 March 2000
Rights and permissions
About this article
Cite this article
Pedroni, V., Schulz, P., Gschaider de Ferreira, M. et al. A chitosan-templated monolithic siliceous mesoporous-macroporous material. Colloid Polym Sci 278, 964–971 (2000). https://doi.org/10.1007/s003960000348
Published:
Issue Date:
DOI: https://doi.org/10.1007/s003960000348