High-Performance Ammonia Sensor at Room Temperature Based on a Love-Wave Device with Fe2O3@WO3−x Nanoneedles

Proceedings

Daniel Matatagui¹  F. A. Bahos¹  C. Cané²  S. Vallejos²  Isabel Gràcia²  M. J. Fernández³  M. C. Horrillo³ 

[1] CCADET, UNAM, 04510 CD MX, Mexico;IMB-CNM, CSIC, Campus UAB, 08193 Bellaterra, Spain;ITEFI, CSIC, 28006 Madrid, Spain;

关键词: Love-wave;    Ammonia Sensor;    nanoneedles;    tungsten oxide;    ferric oxide;    AACVD;   

DOI  :  10.3390/proceedings1040484

来源: DOAJ

【 摘 要 】

An innovative, simple and inexpensive Love-wave gas sensor based on Fe2O3@WO3−x nanoneedles to detect the variation of ammonia at room temperature was developed. The nanoneedles were successfully formed on Love-wave device via aerosol-assisted chemical vapor deposition (AACVD). The nanoneedles worked as guiding and sensitive layers detecting the changes of the elastic properties presented by ammonia interaction. The sensor was tested to ammonia concentrations between 25 to 90 ppm and showed large frequency shifts, high sensibility, short response time and good reproducibility.

【 授权许可】

Unknown