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

作者：Srivastava Manish^*; Das Ashok Kumar; Khanra Partha; Kim Nam Hoon; Lee Joong Hee

来源：4th International Conference on Multi-Functional Materials and Structures (MFMS 2013), 2013-07-14 to 2013-07-17.

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

• Graphene
• composite
• catalyst
• metal oxide
• nanomaterials

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 UV vis 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 similar to 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.

• 出版日期2013