Abstract
During the construction of highway, the exhaust emissions of equipment and vehicles will affect the ecological environment in a certain range around the road, especially in environmental sensitive areas such as national nature reserves, which need to be quantitatively studied. In this work, a novel two-dimensional net-like hierarchical WO3 nanostructure was synthesized by a one-step hydrothermal route. It was amazing that this novel two-dimensional WO3 show ultra-sensitivity towards NO2, primarily attributed to abundant gas diffusion channels and large gas-sensitive reaction surface area furnished by one-dimensional net-like WO3 nanowires. Benefiting from their novel characteristic, the two dimensional net-like WO3 based sensor has been applied in NO2 monitoring of the natural protected area.
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