期刊
NANOSCALE
卷 7, 期 28, 页码 11971-11979出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr02837j
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资金
- Ministry of Science, ICT & Future Planning [2014R1A4A1008140]
- National Research Foundation of Korea (NRF) - Ministry of Education and Polymer Materials Fusion Research Center [2014R1A4A1008140]
- DST, Government of India [IFA13-MS-02, IFA-13 CH-105, CS-393/2012]
We report the H-2 and LPG gas sensing behavior of RGO/SnO2 QDs synthesized by a surfactant assisted hydrothermal method. The RGO/SnO2 QD based sensor shows a high response of similar to 89.3% to H-2 and similar to 92.4% to LPG for 500 ppm test gas concentration at operating temperatures of 200 degrees C and 250 degrees C, respectively. Further, the RGO/SnO2 QD based sensor shows good selectivity for H-2 and LPG in the presence of other interfering gases such as ammonia, chloroform, toluene, benzene, acetone, n-butylacetate, acetic acid and formic acid. We observed that the gas response to H-2 is 29.8 times higher than that to acetic acid whereas the gas response to LPG is 17.8 times higher than that to formic acid. Long-term analyses have also been performed to demonstrate the reproducible nature of the RGO/SnO2 QD based sensor over passing time which shows excellent reproducibility.
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