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High Sensitivity and Selectivity of C-Doped WO3 Gas Sensors Toward Toluene and Xylene

  作者 Deng, LB; Ding, XH; Zeng, DW; Zhang, SP; Xie, CS  
  选自 期刊  IEEE Sensors Journal;  卷期  2012年12-6;  页码  2209-2214  
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[摘要]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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