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

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), ind...

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Published in:Sensors (Basel, Switzerland) Switzerland), 2016-07, Vol.16 (7), p.1152
Main Authors: Zhang, Hao, Li, Qun, Huang, Jinyu, Du, Yu, Ruan, Shuang Chen
Format: Article
Language:English
Subjects:
Gas sensors
Gold
Graphene
Hydrothermal treatment
low operating temperature
nanocomposite
Nanocomposites
Nitrogen dioxide
NO2 sensing
Operating temperature
Raman spectra
Spectrum analysis
X ray photoelectron spectroscopy
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cited_by cdi_FETCH-LOGICAL-c469t-b9aabe91c9a4030b23482d3dbea149965992b11b3a4cd241465f3062b0da818d3
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container_title Sensors (Basel, Switzerland)
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creator Zhang, Hao
Li, Qun
Huang, Jinyu
Du, Yu
Ruan, Shuang Chen
description 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.
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subjects Gas sensors
Gold
Graphene
Hydrothermal treatment
low operating temperature
nanocomposite
Nanocomposites
Nitrogen dioxide
NO2 sensing
Operating temperature
Raman spectra
Spectrum analysis
X ray photoelectron spectroscopy
title Reduced Graphene Oxide/Au Nanocomposite for NO₂ Sensing at Low Operating Temperature
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