Template synthesis of titania on polysaccharides

Autor:	Yu. A. Shchipunov, S. V. Tsybulya, Irina Postnova, Andrey A. Rempel, Ekaterina A. Kozlova, A. V. Krekoten
Rok vydání:	2013
Předmět:	chemistry.chemical_classification Inorganic chemistry General Chemistry Polysaccharide law.invention chemistry.chemical_compound Hydrolysis chemistry Chemical engineering law Reagent Photocatalysis Calcination Cellulose Ethylene glycol Isopropyl
Zdroj:	Russian Chemical Bulletin. 62:976-983
ISSN:	1573-9171 1066-5285
Popis:	Template synthesis of titania was conducted in solutions of polysaccharides, xanthan and sodium hyaluronan, prepared in ethylene glycol and on cellulose fibrils placed in ethylene glycol. The process was controlled by the addition of water in amounts sufficient only for the hydration of polysaccharides. When the precursor of TiO2, tetra(isopropyl) orthotitanate, was added, the fast reactions of hydrolysis and condensation were triggered only after its contact with water, which provided the precipitation of titania on xanthan and sodium hyaluronan macromolecules or on cellulose fibrils. The morphology of the synthesized TiO2 samples depended on the reagent concentrations in a reaction mixture. Amorphous titania was transformed by calcination into the crystalline state. Some of the obtained TiO2 samples have rather high photocatalytic activity comparable to that of the commercial photocatalysts.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5016cd2c2dfc66c548d0ee46ebbfd186 https://doi.org/10.1007/s11172-013-0127-9 Zobrazit plný text záznamu Full text from SpringerLink