Light-excited formaldehyde gas sensor and preparation process thereof
A formaldehyde gas and preparation technology, applied in the field of sensors, can solve the problems of detonating flammable gases, shortening service life, increasing energy consumption, etc., and achieve the effect of strengthening gas-sensing selectivity, improving adsorption capacity, and increasing surface electron concentration
Inactive Publication Date: 2018-10-30
DALIAN UNIV OF TECH
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Abstract
The invention belongs to the technical field of sensors and provides a light-excited formaldehyde gas sensor and a preparation process thereof. The sensor comprises a light source, a gas-sensitive material and a substrate, wherein the gas-sensitive material is uniformly coated on the surface of the substrate; the component of the gas-sensitive material is a hollow microsphere zinc oxide and stannic oxide heterojunction composite nanometer material; the coating thickness of the gas-sensitive material is 1-100 microns; the service condition is that LED lamp bead irritation is performed at the band of 365nm. The formaldehyde sensor disclosed by the invention is high in response of formaldehyde gas, and also has the characteristics of being excellent in selectivity, sensitivity and stability and capable of working at a room temperature.
Application Domain
Material nanotechnologyZinc oxides/hydroxides +2
Technology Topic
Product gasZinc +10
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PUM
Property | Measurement | Unit |
Diameter | 100.0 ~ 300.0 | nm |
Diameter | 100.0 ~ 250.0 | nm |
Thickness | 30.0 ~ 50.0 | nm |
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