Abstract
Gas sensors are widely used because of their high sensitivity, low cost and simple fabrication. The development of high-performance ethanol gas sensors are of great significance for the environment and health protection. In this work, using a simple and efficient solvothermal method, we fabricated a composite sensor based on graphene oxide (GO) supported indium oxide (GO/In2O3) for quantitatively sensing ethanol gas in 65% humidity. The structure and morphology of the composites were characterized by SEM, TEM, XRD, XPS, Raman and BET analysis. And, the sensing performance of composites were studied. The results showed that the sensor based on 0.5% GO/In2O3 exhibited good-sensing performance in the environment of relative humidity (> 65%). The modified sensor also showed good response linearity in the ethanol concentration range of 1–200 ppm, suggesting its potential application for quantitative detection of ethanol. It is concluded that the loading of GO improved the gas-sensing performance of indium oxide. Our work is of great significance for the application of In2O3 in ethanol sensing in practical life.
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The data used to support the findings of this study are available from the corresponding author upon request.
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Acknowledgements
We acknowledge the financial support from the National Natural Science Foundation of China (Grant Nos. U21A20290 and 22176044), National Key Research and Development Program of China (Grant No. 2017YFA0207003), and Projects of Talents Recruitment of GDUPT (Grant Nos. 2019rc056 and 2019rc057), Maoming Science and Technology Plan Project, China (2020576).
Funding
This study was supported by the National Natural Science Foundation of China (Grant No. U21A20290,), National Key Research and Development Program of China (Grant No. 2017YFA0207003).
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XM: Data curation, Methodology, Investigation, Writing—original draft; YY: Methodology, Investigation; JP: Methodology; MS: Writing—original draft, Writing—review & editing; ZC: Investigation; RY: Investigation; PS: Investigation; XW: Writing—review & editing; SW: Project administration, Supervision, Writing—review & editing.
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Ma, X., Yuan, Y., Peng, J. et al. High-performance gas sensor based on GO/In2O3 nanocomposite for ethanol detection. J Mater Sci: Mater Electron 33, 15460–15472 (2022). https://doi.org/10.1007/s10854-022-08452-x
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DOI: https://doi.org/10.1007/s10854-022-08452-x