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Nanocrystalline BaSnO3 as an Alternative Gas Sensor Material:Surface Reactivity and High Sensitivity to SO2статья
Статья опубликована в высокорейтинговом журнале
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: 22 ноября 2015 г.
- Авторы: Marikutsa A., Rumyantseva M., Baranchikov A., Gaskov A.
- Журнал: Materials
- Том: 8
- Год издания: 2015
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 6437
- Последняя страница: 6454
- DOI: 10.3390/ma8095311
- Аннотация: Nanocrystalline perovskite-type BaSnO3 was obtained via microwave-assisted hydrothermal route followed by annealing at variable temperature. The samples composition and microstructure were characterized. Particle size of 18–23 nm was unaffected by heat treatment at 275–700 C. Materials DC-conduction was measured at variable temperature and oxygen concentration. Barium stannate exhibited n-type semiconductor behavior at 150–450 C with activation energy being dependent on the materials annealing temperature. Predominant ionosorbed oxygen species types were estimated. They were shown to change from molecular to atomic species on increasing temperature. Comparative test of sensor response to various inorganic target gases was performed using nanocrystalline SnO2-based sensors as reference ones. Despite one order of magnitude smaller surface area, BaSnO3 displayed higher sensitivity to SO2 in comparison with SnO2. DRIFT spectroscopy revealed distinct interaction routes of the oxides surfaces with SO2. Barium-promoted sulfate formation favoring target molecules oxidation was found responsible for the increased BaSnO3 sensitivity to ppm-range concentrations of SO2 in air.
- Добавил в систему: Румянцева Марина Николаевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | materials-08-05311.pdf | 2,6 МБ | 18 сентября 2015 [RumyantsevaMN] |