Preparation method of high-performance formaldehyde gas sensor based on oxygen vacancy-rich LaFeO3 nanoparticles

The invention discloses a preparation method of a high-performance formaldehyde gas sensor based on oxygen vacancy-rich LaFeO3 nanoparticles, belongs to the field of chemical resistance type gas sensors, and particularly relates to a preparation method of a high-performance formaldehyde gas sensor based on oxygen vacancy-rich LaFeO3 nanoparticles. Comprising the following steps: mixing lanthanum nitrate hexahydrate with an ethanol solution, mixing trimesic acid with the ethanol solution, preparing La/Fe-MOF gel, drying the gel, annealing, preparing LaFeO3 nanoparticles rich in oxygen vacancies, carrying out ultrasonic cleaning, coating slurry, drying a sensitive material and generating the formaldehyde gas sensor. In the production process, the production efficiency can be effectively improved, meanwhile, a large amount of use cost is saved, the practical effect of the sensor in formaldehyde gas detection is improved, and meanwhile, the sensitivity of the formaldehyde sensor is enhanced ...