A Novel Net Like Structure Sensor and Gas Detection Performance in Tunnel Construction

摘要

In this work, novel multiporous net-like WO3 center dot H2O nanostructures were successfully obtained by changing the cations in a hydrothermal reaction system. The gas-sensing performance was measured by a static system. The experimental results showed that this net-like WO3 center dot H2O nanostructure-based sensor exhibited an enhanced response to H2S compared with that of normal WO3 center dot H2O nanorods. The causes of this phenomenon are discussed in detail from the two perspectives of electron transfer and gas-sensing reaction processes. We believe that this work also indicate that the net like structure is hopeful to become the ideal candidate as high performance H2S gas sensors.