Experimental research on acetone gas sensor based on biomass derived α-Fe2O3
Development of acetone gas sensor with high sensitivity and low detection limit is of great significance for industrial production safety and human disease diagnosis.α-Fe2O3 microtubes are prepared by soaking in metal salt solution and calcining in air using biomass absorbent cotton as template,and then the phase composition and surface morphology of α-Fe2O3 are characterized by X-ray diffractometer,thermogravimetric analyzer and scanning electron microscope(SEM).The prepared α-Fe2O3 sensor shows excellent acetone sensing performance,including high response(192.51％@20 ×10-6),low detection limit(1 ×10-6)and excellent repeatability and selectivity,and the sensing mechanism of the sensor is also analyzed.This work not only provides solution for the design of porous metal oxide materials,but also has application potential in the construction of high-performance acetone gas detection system.
acetone gas sensorbiomass templateporous materialsα-Fe2O3
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