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Sensors 2016, 16(7), 1152; doi:10.3390/s16071152

Reduced Graphene Oxide/Au Nanocomposite for NO2 Sensing at Low Operating Temperature

1
Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
2
Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
3
Shenzhen Key Laboratory of Sensor Technology, College of Physics Science and Technology, Shenzhen University, Shenzhen 518060, China
*
Authors to whom correspondence should be addressed.
Academic Editors: Eduard Llobet and Stella Vallejos
Received: 30 June 2016 / Revised: 20 July 2016 / Accepted: 21 July 2016 / Published: 22 July 2016
(This article belongs to the Special Issue Gas Nanosensors)
View Full-Text   |   Download PDF [5084 KB, uploaded 22 July 2016]   |  

Abstract

A reduced grapheme oxide (rGO)/Au hybrid nanocomposite has been synthesized by hydrothermal treatment using graphite and HAuCl4 as the precursors. Characterization, including X-ray diffraction (XRD), Raman spectra, X-ray photoelecton spectroscopy (XPS) and transmission electron microscopy (TEM), indicates the formation of rGO/Au. A gas sensor fabricated with rGO/Au nanocomposite was applied for NO2 detection at 50 °C. Compared with pure rGO, rGO/Au nanocomposite exhibits higher sensitivity, a more rapid response–recovery process and excellent reproducibility. View Full-Text
Keywords: graphene; nanocomposite; NO2 sensing; low operating temperature graphene; nanocomposite; NO2 sensing; low operating temperature
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Zhang, H.; Li, Q.; Huang, J.; Du, Y.; Ruan, S.C. Reduced Graphene Oxide/Au Nanocomposite for NO2 Sensing at Low Operating Temperature. Sensors 2016, 16, 1152.

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