AI Article Synopsis
- Studying an acetone sensor is important for developing portable diabetes monitoring systems, as acetone levels can indicate changes in blood sugar.
- Researchers synthesized NiO/ZnO composites with varying amounts of nickel, finding that 5% Ni provided the best gas sensing response to acetone, being 7.3 times more responsive than pure ZnO at 340 °C.
- The 5% NiO/ZnO composite also demonstrated excellent selectivity and reproducibility, making it a promising material for future gas sensing applications.
Article Abstract
Studying an acetone sensor with prominent sensitivity and selectivity is of great significance for the development of portable diabetes monitoring system. In this paper, cubic-like NiO/ZnO composites with different contents of Ni were successfully synthesized by modifying MOF-5 with Ni-doped. The structure and morphology of the prepared composites were characterized by XRD, XPS, and SEM. The experimental results show that the NiO/ZnO composite showed an enhanced gas sensing property to acetone compared to pure ZnO, and the composites showed the maximum response value when Ni loading amount was 5 at%. The response value of the 5% NiO/ZnO composite to acetone (500 ppm) at the optimum operating temperature (340 °C) is 7.3 times as that of pure ZnO. At the same time, the 5% NiO/ZnO composite has excellent selectivity and reproducibility for acetone. The gas sensing mechanism of the heterojunction sensor was described.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075315 | PMC |
| http://dx.doi.org/10.3390/nano10020386 | DOI Listing |
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