Journal
JOURNAL OF MATERIALS SCIENCE
Volume 56, Issue 27, Pages 15061-15068Publisher
SPRINGER
DOI: 10.1007/s10853-021-06268-4
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Funding
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology) [2021-KF-13]
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology [BM2012110]
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Ag-LaFeO3, prepared by chemical reduction method, demonstrates excellent gas-sensing properties towards ethanol, with a higher gas response compared to LaFeO3 sensor, and short response and recovery times.
Ag-LaFeO3 was prepared by chemical reduction method with NaBH4 ethanol solution. It can be seen from X-ray diffraction (XRD) that all samples are still perovskite structure. Two distinct Ag peaks were observed in X-ray photoelectron spectroscopy (XPS). The experimental results show that at 190 degrees C, the gas response of Ag-LaFeO3 sensor to 100 ppm ethanol is 155, which is much higher than that of LaFeO3 sensor. Meanwhile, the response time and recovery time are 30 s and 5 s, respectively. The results show that Ag-LaFeO3 has excellent ethanol gas-sensing properties.
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