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), 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.

[1]  Sanjay Mathur,et al.  Equivalence between thermal and room temperature UV light-modulated responses of gas sensors based on individual SnO2 nanowires , 2009 .

[2]  Feldmann,et al.  Drastic reduction of plasmon damping in gold nanorods. , 2002, Physical review letters.

[3]  S. Stankovich,et al.  Chemical analysis of graphene oxide films after heat and chemical treatments by X-ray photoelectron and Micro-Raman spectroscopy , 2009 .

[4]  Mona E. Zaghloul,et al.  Design and performance of a simple, room-temperature Ga2O3 nanowire gas sensor , 2009 .

[5]  Fengmin Liu,et al.  UV-enhanced room temperature NO2 sensor using ZnO nanorods modified with SnO2 nanoparticles , 2012 .

[6]  황인성,et al.  Novel fabrication of SnO2 nanowire gas sensor with high sensitivity , 2008 .

[7]  Young-Jin Choi,et al.  Novel fabrication of an SnO2 nanowire gas sensor with high sensitivity , 2008, Nanotechnology.

[8]  G. Wallace,et al.  Processable aqueous dispersions of graphene nanosheets. , 2008, Nature nanotechnology.

[9]  C. N. R. Rao,et al.  Nanowires, nanobelts and related nanostructures of Ga2O3 , 2002 .

[10]  Wojtek Wlodarski,et al.  Physisorption-Based Charge Transfer in Two-Dimensional SnS2 for Selective and Reversible NO2 Gas Sensing. , 2015, ACS nano.

[11]  Jun Zhang,et al.  Synthesis of Pt nanoparticles functionalized WO3 nanorods and their gas sensing properties , 2011 .

[12]  S. Nguyen,et al.  Graphene oxide, highly reduced graphene oxide, and graphene: versatile building blocks for carbon-based materials. , 2010, Small.

[13]  Paul Mulvaney,et al.  Drastic reduction of plasmon damping in gold nanorods. , 2002 .

[14]  Yang Zhang,et al.  Effects of localized surface plasmons on the photoluminescence properties of Au-coated ZnO films. , 2009, Optics express.

[15]  W. S. Hummers,et al.  Preparation of Graphitic Oxide , 1958 .

[16]  Prashant V Kamat,et al.  Graphene-semiconductor nanocomposites: excited-state interactions between ZnO nanoparticles and graphene oxide. , 2009, Langmuir : the ACS journal of surfaces and colloids.

[17]  Xue Wang,et al.  UV sensor based on TiO2 nanorod arrays on FTO thin film , 2011 .

[18]  Hui-Ming Cheng,et al.  Direct reduction of graphene oxide films into highly conductive and flexible graphene films by hydrohalic acids , 2010 .

[19]  Kian Ping Loh,et al.  Hydrothermal Dehydration for the “Green” Reduction of Exfoliated Graphene Oxide to Graphene and Demonstration of Tunable Optical Limiting Properties , 2009 .

[20]  Yulin Deng,et al.  UV-Light-Activated ZnO Fibers for Organic Gas Sensing at Room Temperature , 2010 .

[21]  Jun Zhang,et al.  3D hierarchically porous ZnO structures and their functionalization by Au nanoparticles for gas sensors , 2011 .

[22]  Oleg Lupan,et al.  A single ZnO tetrapod-based sensor , 2009 .

[23]  B. H. Weiller,et al.  Practical chemical sensors from chemically derived graphene. , 2009, ACS nano.

[24]  E. Yoo,et al.  Enhanced cyclic performance and lithium storage capacity of SnO2/graphene nanoporous electrodes with three-dimensionally delaminated flexible structure. , 2009, Nano letters.

[25]  Yulin Deng,et al.  UV and visible light controllable depletion zone of ZnO-polyaniline p-n junction and its application in a photoresponsive sensor. , 2010, Physical chemistry chemical physics : PCCP.

[26]  Elisabetta Comini,et al.  UV light activation of tin oxide thin films for NO2 sensing at low temperatures , 2001 .

[27]  Nam-Joon Cho,et al.  Graphene‐Functionalized Natural Microcapsules: Modular Building Blocks for Ultrahigh Sensitivity Bioelectronic Platforms , 2016 .

[28]  Yang Yang,et al.  A one-step, solvothermal reduction method for producing reduced graphene oxide dispersions in organic solvents. , 2010, ACS nano.

[29]  Dmitri O. Klenov,et al.  Enhanced gas sensing by individual SnO2 nanowires and nanobelts functionalized with Pd catalyst particles. , 2005, Nano letters.

[30]  V. Dravid,et al.  Nanopatterned polycrystalline ZnO for room temperature gas sensing , 2010 .

[31]  G. Eda,et al.  Large-area ultrathin films of reduced graphene oxide as a transparent and flexible electronic material. , 2008, Nature nanotechnology.

[32]  Changhyun Jin,et al.  H2S gas sensing properties of bare and Pd-functionalized CuO nanorods , 2012 .

[33]  Jianwen Zhao,et al.  Electrical and Spectroscopic Characterizations of Ultra-Large Reduced Graphene Oxide Monolayers , 2009 .

[34]  A. Kolmakov,et al.  Electronic control of chemistry and catalysis at the surface of an individual tin oxide nanowire. , 2005, The journal of physical chemistry. B.

[35]  Jun Zhang,et al.  Amino acid-assisted one-pot assembly of Au, Pt nanoparticles onto one-dimensional ZnO microrods. , 2010, Nanoscale.

[36]  Xin Wang,et al.  Graphene−Metal Particle Nanocomposites , 2008 .

[37]  Jun Zhang,et al.  Pt clusters supported on WO3 for ethanol detection , 2010 .

[38]  Yoshio Bando,et al.  Synthesis, Raman scattering and defects of β-Ga2O3 nanorods , 2002 .

[39]  Vinayak P. Dravid,et al.  UV-activated room-temperature gas sensing mechanism of polycrystalline ZnO , 2009 .