Abstract
To achieve highly response to triethylamine detection, we prepared Flaky-like W-doped MoO3 by hydrothermal method with calcined oxidation process. The changes in the structural morphology of the material before and after the calcination oxidation process were analyzed and the surface chemical states of the oxides before and after doping were characterized. The gas sensing results indicated that the 1 mol% W-doped MoO3 shows high response of 340 to 100 ppm triethylamine with low temperature at 170 °C, meanwhile shows good response of 4.4 to 1 ppm triethylamine. The sensor also shows great repeatability and long-term stability. The enhanced gas sensing performance can be attributed to the reduction of the particle size, and more oxygen vacancies produced by W doping.
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