- Tytuł:
- Impedance spectroscopy in H2 sensing with TiO2/SnO2 nanomaterials
- Autorzy:
-
Szafraniak, Bartłomiej
Kusior, Anna
Radecka, Marta
Zakrzewska, Katarzyna - Powiązania:
- https://bibliotekanauki.pl/articles/221225.pdf
- Data publikacji:
- 2020
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
impedance spectroscopy
TiO2
SnO2
hydrogen detection
resistive-type gas sensors - Opis:
- Alternating current a.c. measurements enable to understand the physical and chemical processes occurring in semiconductor materials. Impedance spectroscopy has been successfully applied to study the responses of gas sensors based on metal oxides, such as TiO2, SnO2 and TiO2/SnO2 nanocomposites. This work is devoted to dynamic measurements of hydrogen sensor behaviour over the temperature range of 300-450°C. Frequency dependence of the impedance signal gives evidence that 50 mol% TiO2/50 mol% SnO2 nanocomposites should be treated as resistive-type sensors. Temporal evolution of the response to 500 ppm H2 at 320°C indicates a very short response time and much longer recovery.
- Źródło:
-
Metrology and Measurement Systems; 2020, 27, 3; 417-425
0860-8229 - Pojawia się w:
- Metrology and Measurement Systems
- Dostawca treści:
- Biblioteka Nauki
Artykuł