Facile synthesis of graphene/ZnO nanocomposites by low temperature hydrothermal method

Journal Article · Fri Feb 15 00:00:00 EST 2013 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2012.11.048· OSTI ID:22217701

Saravanakumar, Balasubramaniam; Mohan, Rajneesh ^[1]; Kim, Sang-Jae ^[1]

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1. Nanomaterials and System Lab, Department of Mechatronics Engineering, Jeju National University, Jeju 690-756 (Korea, Republic of)

Highlights: ► Graphene/ZnO nanocomposites were prepared by low temperature hydrothermal method. ► Rhodamine-B degraded by using graphene/ZnO nanocomposites. ► ZnO anchored well on the surface of graphene. -- Abstract: Graphene/ZnO nanocomposites have been synthesized using hydrothermal method at two different temperatures 80 and 90 °C. The structure, morphology and optical properties of as synthesized nanocomposites were analyzed through X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy, transmission electron microscopy (TEM) and UV–vis absorbance spectroscopy. The XRD pattern confirmed the formation of graphene decorated by hexagonal ZnO with high crystallinity. FESEM image revealed that the sheet like graphene decorated with ZnO in homogeneously. Decoration of quasi-spherical ZnO nanoparticles on graphene sheet was confirmed by TEM. The characteristic absorbance peaks of graphene/ZnO nanocomposites were observed in UV visible spectra. The photocatalytic degradation experiment was performed against rhodamine-B dye and showed good catalytic activity for both samples. The graphene/ZnO nanocomposites showed higher catalytic activity then ZnO nanoparticles. The GZN-90 sample showed more catalytic activity than GZN-80 due to higher density of ZnO in graphene surface generates large number of photo-induced electron.

• OSTI ID: 22217701
• Journal Information: Materials Research Bulletin, Vol. 48, Issue 2; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
COMPOSITE MATERIALS
DENSITY
FIELD EMISSION
FOURIER TRANSFORM SPECTROMETERS
GRAPHENE
HYDROTHERMAL SYNTHESIS
NANOSTRUCTURES
OPTICAL PROPERTIES
PHOTOCATALYSIS
SCANNING ELECTRON MICROSCOPY
SEMICONDUCTOR MATERIALS
SPECTROSCOPY
SURFACES
TRANSMISSION ELECTRON MICROSCOPY
VISIBLE SPECTRA
X-RAY DIFFRACTION
ZINC OXIDES