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SnO2/Fe2O3 nanocomposites: Ethanol-sensing performance and catalytic activity for oxidation of ethanolстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Kovalenko V.V., Rumyantseva M.N., Gaskov A.M., Makshina E.V., Yushchenko V.V., Ivanova I.I., Ponzoni A., Faglia G., Comini E.
- Журнал: Inorganic Materials
- Том: 42
- Номер: 10
- Год издания: 2006
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 1088
- Последняя страница: 1093
- DOI: 10.1134/S0020168506100074
- Аннотация: SnO2/Fe2O3 nanocomposites have been prepared over the entire composition range (0-100 mol % Fe2O3) through precipitation from solution, and their ethanol-sensing performance (10-200 ppm C2H5OH) was evaluated using electrical conductivity measurements in the temperature range 150-450 degrees C. The sensing performance of the nanocomposites is shown to strongly depend on their composition. The Fe2O3-rich (> 70 mol % Fe2O3) nanocomposites offer a large C2H5OH response and low sensitivity to ambient humidity. The oxidizing and acid properties of the nanocomposites have been studied using temperature-programmed hydrogen reduction and ammonia desorption measurements, and their catalytic activity for oxidation of ethanol was assessed by gas chromatography mass spectrometry in a flow system. The results indicate that increasing the Fe2O3 content of the nanocomposites reduces the density of acid centers on their surface and enhances their activity for oxidation of ethanol.
- Добавил в систему: Румянцева Марина Николаевна