Journal
SENSORS
Volume 16, Issue 11, Pages -Publisher
MDPI AG
DOI: 10.3390/s16111876
Keywords
graphene; acetone sensing; ZnO
Funding
- National Natural Science Foundation of China [61575129, 61275144]
- Guangdong Natural Science Foundation [2016A030313059]
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Open Project [2015-10]
- Science and Technology Fund of Shenzhen [JCYJ20160307111047701]
- Natural Science Foundation of SZU [82700002601]
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ZnO/graphene (ZnO-G) hybrid composites are prepared via hydrothermal synthesis with graphite, N-methyl-pyrrolidone (NMP), and Zn(NO3)(2 center dot)6H(2)O as the precursors. The characterizations, including X-ray diffraction (XRD), thermogravimetric analyses (TGA), Raman spectroscopy, and transmission electron microscopy (TEM) indicate the formation of ZnO-G. Gas sensors were fabricated with ZnO-G composites and ZnO as sensing material, indicating that the response of the ZnO towards acetone was significantly enhanced by graphene doping. It was found that the ZnO-G sensor exhibits remarkably enhanced response of 13.3 at the optimal operating temperature of 280 degrees C to 100 ppm acetone, an improvement from 7.7 with pure ZnO.
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