WO3 nanopowder is a typical n-type gas-sensing material that has high sensitivity and selectivity to toxic gases, so it has a wide application in gas sensor to detect various hazardous gases. Especially for trimethylamine gas, the reaction is rapid, and the sensitivity is very high. It means that the WO3-based gas sensor provides a quick, convenient, and accurate detection method for detecting whether fish or shellfish food has deteriorated. Also, the gas sensor based on WO3 nano particles has the advantages of low power consumption, low cost and convenient operation. So, WO3 has attracted much attention.
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According to the experts, previous studies indicated that unique nanostructures are highly related to the sensing performances. So far, great advances have been achieved to design and fabricate diverse WO3 in different dimensional. However, it is still challenging to achieve high performances. And the experts have explored many strategies in order to significantly enhance the gas-sensing properties.
