Journal
IEEE SENSORS JOURNAL
Volume 12, Issue 6, Pages 2209-2214Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2011.2179980
Keywords
C-doped WO3; selectivity; toluene; xylene
Funding
- National Basic Research Program of China [2009CB939702, 2009CB939705]
- Natural Science Foundation of China [50772040, 50927201]
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High sensitivity and selectivity of C-doped WO3 gas sensors are reported in this paper. C-doped WO3 is synthesized by a facile infiltration and calcination process using the cotton fibers as templates. The response of C-doped WO3 sensor toward toluene (50 ppm) and xylene (50 ppm) reach 91 and 199, respectively. By comparing the response of C-doped WO3 sensor toward various indoor noxious gases (toluene, formaldehyde, ethanol, methane, benzene, and xylene), distinctive selectivity toward toluene and xylene is found. In addition, C-doped WO3 exhibits relative hygro-stability, differing from traditional gas sensor material. The results indicate that C-doped WO3 has good potential in practical applications, due to its remarkable performance and facile synthesized methods.
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