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Open AccessArticle

Hydrothermal Synthesis of CeO2-SnO2 Nanoflowers for Improving Triethylamine Gas Sensing Property

The Collaboration Innovation Center of Coal Safety Production of Henan Province, Jiaozuo 454000, China
School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Authors to whom correspondence should be addressed.
Nanomaterials 2018, 8(12), 1025;
Received: 17 November 2018 / Revised: 3 December 2018 / Accepted: 5 December 2018 / Published: 8 December 2018
Developing the triethylamine sensor with excellent sensitivity and selectivity is important for detecting the triethylamine concentration change in the environment. In this work, flower-like CeO2-SnO2 composites with different contents of CeO2 were successfully synthesized by the one-step hydrothermal reaction. Some characterization methods were used to research the morphology and structure of the samples. Gas-sensing performance of the CeO2-SnO2 gas sensor was also studied and the results show that the flower-like CeO2-SnO2 composite showed an enhanced gas-sensing property to triethylamine compared to that of pure SnO2. The response value of the 5 wt.% CeO2 content composite based sensor to 200 ppm triethylamine under the optimum working temperature (310 °C) is approximately 3.8 times higher than pure SnO2. In addition, CeO2-SnO2 composite is also significantly more selective for triethylamine than pure SnO2 and has better linearity over a wide range of triethylamine concentrations. The improved gas-sensing mechanism of the composites toward triethylamine was also carefully discussed. View Full-Text
Keywords: CeO2-SnO2; nanostructure; hydrothermal; triethylamine; gas sensor CeO2-SnO2; nanostructure; hydrothermal; triethylamine; gas sensor
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Xue, D.; Wang, Y.; Cao, J.; Zhang, Z. Hydrothermal Synthesis of CeO2-SnO2 Nanoflowers for Improving Triethylamine Gas Sensing Property. Nanomaterials 2018, 8, 1025.

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