Synthesis and acetone gas sensing properties of Ag activated hollow sphere structured ZnFe2O4
- Resource Type
- Authors
- Bingbing Zheng; Yifan Luo; Jiajun You; Chao Zhang; Qingdan Wu
- Source
- Ceramics International. 44:20700-20707
- Subject
- Materials science
Process Chemistry and Technology
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Hydrothermal circulation
0104 chemical sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
chemistry.chemical_compound
Chemical engineering
chemistry
Materials Chemistry
Ceramics and Composites
Acetone
0210 nano-technology
Selectivity
- Language
- ISSN
- 0272-8842
Sheet stacked ZnFe 2 O 4 hollow spheres have been synthesized through a simple hydrothermal method using Zn(CH 3 COO) 2 and Fe(NO 3 ) 3 as Zn and Fe sources, respectively. Then a series of Ag activated ZnFe 2 O 4 composites are prepared. XRD patterns demonstrate that the as-synthesized powders are pure ZnFe 2 O 4 . FE-SEM images exhibit that the as-synthesized Ag-ZnFe 2 O 4 particles are spherical with the diameter of 800–1000 nm. TEM images demonstrate that the as-synthesized Ag-ZnFe 2 O 4 are hollow sphere structure. The gas sensing tests show that 0.25 wt% Ag-ZnFe 2 O 4 has the highest responses to 100 ppm acetone vapor at 175 °C, and response time and recovery time are 17 and 148 s respectively. In addition, 0.25 wt% Ag-ZnFe 2 O 4 has a good selectivity to acetone. Ag activated ZnFe 2 O 4 composites exhibit excellent acetone gas sensing properties and gives potential for the detection of acetone vapor in the application of practical industrial processes and health control.