A Facile One-Step Hydrothermal Synthesis of Graphene/CeO2 Nanocomposite and its Catalytic Properties

Manish Srivastava; Ashok Kumar Das; Partha Khanra; Nam Hoon Kim; Joong Hee Lee

doi:10.4028/www.scientific.net/AMR.747.242

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 747A Facile One-Step Hydrothermal Synthesis of...

A Facile One-Step Hydrothermal Synthesis of Graphene/CeO₂ Nanocomposite and its Catalytic Properties

Abstract:

Graphene/CeO₂ nanocomposite has been successfully prepared by directly growing CeO₂ nanoparticles on graphene sheets via in-situ reduction of graphene oxide containing the metal precursor. The presence of cetyltrimethyl ammonium bromide (CTAB) results the formation of CeO₂ nanoparticles with a narrow size distribution. The structural, morphological, particles size and optical properties of the synthesized products were investigated through X-ray diffraction (XRD), transmission electron microscopy (TEM), fourier transform infrared spectroscopy (FT-IR) and UVvis absorbance spectroscopy, respectively. The XRD pattern shows that graphene/CeO₂ nanocomposite is highly crystalline in nature. Growth of CeO₂ nanoparticles with size in range of 5-18 nm on the graphene sheet were observed by TEM measurement. Optical energy band gap was calculated to be ~3.30 eV corresponding to direct transition. The catalytic activity of the synthesized nanocomposite was investigated taking hydrazine hydrate as a model system. Significant enhancement in the peak current with respect to CeO₂ was observed on graphene/CeO₂ nanocomposite-based electrode demonstrating the higher catalytic activity of graphene/CeO₂ nanocomposite-based electrode.

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Periodical:

Advanced Materials Research (Volume 747)

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242-245

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.747.242

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Online since:

August 2013

Authors:

Manish Srivastava, Ashok Kumar Das, Partha Khanra, Nam Hoon Kim, Joong Hee Lee

Keywords:

Catalyst, Composite, Graphene (GR), Metal Oxide, Nanomaterial

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