Highly sensitive ethanol gas sensor based on CuO/ZnSnO3 heterojunction composites
| Autor: | Shouwen Yu, Xiaohua Jia, Yong Li, Haojie Song, Sizhe Wang, Jin Yang |
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| Rok vydání: | 2021 |
| Předmět: |
Ethanol
Materials science Nanocomposite Precipitation (chemistry) Mechanical Engineering Heterojunction 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Highly sensitive chemistry.chemical_compound Operating temperature Chemical engineering X-ray photoelectron spectroscopy chemistry Mechanics of Materials General Materials Science Ethanol fuel 0210 nano-technology |
| Zdroj: | Materials Letters. 291:129531 |
| ISSN: | 0167-577X |
| Popis: | Monitoring ethanol is importance to our life. Here, CuO/ZnSnO3 hollow microspheres were synthesized through in-situ precipitation method. CuO/ZnSnO3 was characterized by XRD, XPS, SEM and TEM. The characterization results showed that CuO/ZnSnO3 hollow microsphere with a radius of 0.8–1.4 μm. The sensing performances of the as-prepared nanocomposites were examined and compared with ZnSnO3 and CuO. Gas sensing results revealed that the 8% CuO/ZnSnO3 sensor exhibits excellent ethanol response (Ra/Rg = 131–100 ppm), which was 3–3.5 times higher than that of ZnSnO3 and CuO at the optimal operating temperature (160 ℃), respectively. The simple production process and superior gas response make CuO/ZnSnO3 applicable to more occasions where ethanol exists. The improved performance can be attributed to the p-n heterojunction between CuO and ZnSnO3. |
| Databáze: | OpenAIRE |
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