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Entanglement of CeO2 Nanorods and Graphene Nanoribbons and their Properties Studies of Nanocomposites

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Abstract:

Nano/Micro-structured CeO2 and their nanocomposites have been received considerable attention in basic research and commercial applications, such as, new energy fields, photocatalysts, environmental fields, et al. To extend its visible light response and pave the effective conductive channels for charge transfer and separation in nanoscale is still facing great challenges. To explore these key issues of materials chemistry and physics, CeO2 nanorods were prepared with aid of soft templates by wet chemical approach. Graphene nanoribbons were obtained with unzipping method of carbon nanotube (CNTs). Entanglement of CeO2 nanorods and graphene nanoribbons oxides was realized based on the supermolecular interactions between surface active groups of CeO2 nanorods and graphene nanoribbons oxides and excellent flexibility of graphene nanoribbons. A series of characterizations were examined by SEM (scanning electron microscopy), TEM (transmission electron microscopy), XRD (X-ray diffraction), the Fourier-Transform Infrared (FTIR) spectra, ultraviolet-visible spectroscopy (UV-Vis) and so on. Photocatalytic efficiency was examined by selecting typical organic pollutants. The results indicated that the entanglement of a small amount of graphene nanoribbons on the surface of CeO2 nanorods not only expanded the light response of nanocomposite to visible light, but also enhanced the adsorption properties to organic pollutants. Because of excellent charge transfer properties and high mobility of graphene nanoribbons, the nanocomposites of CeO2/graphene nanoribbons are favor for electron-holes pairs generated by visible light, separation, and transfer, which would be important potential applications in photocatalysts, artificial photosynthesis system, nano/micro-devices, et al.

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Periodical:

Materials Science Forum (Volume 814)

Pages:

153-160

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.814.153

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Online since:

March 2015

Authors:

Bo Zhang, Xiao Chun He, Ming Jun Gao, Xing Fa Ma*, Guang Li

Keywords:

CeO2 Nanorods, Charge Transfer, Entanglement, Graphene Nanoribbons, Nanocomposites

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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