Journal
CERAMICS INTERNATIONAL
Volume 47, Issue 24, Pages 34979-34986Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2021.09.039
Keywords
Antimony doping; One-step solvothermal method
Categories
Funding
- National Natural Science Foundation of China [51974072]
- Fundamental Research Funds for the Central Universities of China [N2125028]
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Sb-doped ZnO-Co3O4 nanoparticles with excellent gas-sensing performance for n-butanol were successfully synthesized by a simple one-step solvothermal route and annealing process, exhibiting high selectivity and sensitivity. The improved sensing performance of Sb-doped ZnO-Co3O4 was attributed to electronic and chemical sensitization effects of Sb as well as the formation of shallow donor complex defects.
Sb-doped ZnO-Co3O4 nanoparticles with excellent gas-sensing performance for n-butanol were synthesized by a simple one-step solvothermal route and annealing process. Microstructure, morphology, and element valence states were characterized by X-ray diffraction, field scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. Sensing performance of Sb-doped ZnO-Co3O4 composite nanoparticles for various volatile organic components was comprehensively investigated. Results show that nanocomposites exhibit high selectivity and sensitivity to n-butanol when doped with Sb at a level of 8%. Specifically, the selectivity of 8% Sb-doped ZnO-Co3O4 sensor to 100 ppm n-butanol reached a response of 61.129 at optimal operating temperature of 200 degrees C, which is significantly higher than that of ZnO-Co3O4 composite materials prepared without Sb doping. Improved sensing performance of Sb-doped ZnO-Co3O4 was attributed to electronic and chemical sensitization effects of Sb as well as the formation of shallow donor complex defects.
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