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Design of high-sensitivity ethanol sensor based on Pr-doped SnO2 hollow beaded tubular nanostructure
- Source :
- Vacuum. 189:110244
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Pr-doped SnO2 hollow beaded tubular nanostructure was synthesized by electrospinning technique, accompanied by using carbon spheres as sacrificial templates. The crystalline phase, morphology, microstructure, and element composition of the samples were explored and analyzed. The gas sensitivity test results show that Pr-doped SnO2 sensor exhibits high response value, excellent selectivity and rapid response-recovery ability to ethanol at 200 °C. The sensor can effectively detect ethanol vapor as low as 2 ppm. Response/recovery time to 100 ppm ethanol are about 12 s/8 s, respectively. The possible enhancement mechanism caused by the synergistic effect of the unique nanostructure, the carbon templates, and Pr dopant are discussed. The research may provide a better design of ethanol sensors.
- Subjects :
- 010302 applied physics
Nanostructure
Materials science
Dopant
Doping
chemistry.chemical_element
02 engineering and technology
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
01 natural sciences
Electrospinning
Surfaces, Coatings and Films
chemistry
Chemical engineering
Phase (matter)
0103 physical sciences
0210 nano-technology
Selectivity
Instrumentation
Carbon
Subjects
Details
- ISSN :
- 0042207X
- Volume :
- 189
- Database :
- OpenAIRE
- Journal :
- Vacuum
- Accession number :
- edsair.doi...........1f7fef399edfaaac9cdbfa3ad59721e6