期刊
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
卷 31, 期 9, 页码 913-917出版社
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2015.05.001
关键词
Graphene (G); SnO; Gas sensor; Formaldehyde
资金
- National Natural Science Foundation of China [61271156]
- Natural Science Foundation of Anhui Province [1408085MF114]
- AHUT [TD201204]
- research project for university personnel returning from overseas - Ministry of Education of China
Graphene (G) was prepared by reducing graphene oxide (GO) with hydrazine hydrate. SnO-graphene composites with different amounts of graphene were prepared via hydrothermal method. SnO-G composites were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The effects of the graphene content in the composites and the hydrothermal temperature on the gas-sensing responses of the materials to formaldehyde vapor were investigated. The gas-sensing selectivity of the sensor based on SnO-1% G (100 degrees C, 10 h) composite to five kinds of gases (1000 x 10(-6)) was also studied. The results revealed that the sensor based on SnO-1% G (100 degrees C, 10 h) exhibited high response to formaldehyde vapor when the operating temperature of the sensor was 133 degrees C and the response to 0.001 x 10(-6) formaldehyde attained 3.9. The response time and recovery time for 0.001 x 10(-6) formaldehyde were 24 and 12 s, respectively. Copyright (C) 2015, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited. All rights reserved.
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