Ionic liquid-assisted one-step hydrothermal synthesis of TiO2-reduced graphene oxide composites |
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Authors: | Jianfeng Shen Min Shi Bo Yan Hongwei Ma Na Li Mingxin Ye |
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Affiliation: | (1) Center of Special Materials and Technology, Fudan University, Shanghai, 200433, China; |
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Abstract: | We have demonstrated a facile and efficient strategy for the fabrication of soluble reduced graphene oxide sheets (RGO) and
the preparation of titanium oxide (TiO2) nanoparticle-RGO composites using a modified one-step hydrothermal method. It was found that graphene oxide could be easily
reduced under solvothermal conditions with ascorbic acid as reductant, with concomitant growth of TiO2 particles on the RGO surface. The TiO2-RGO composite has been thoroughly characterized by Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction,
X-ray photoelectron spectroscopy, and thermogravimetric analysis. Microscopy techniques (scanning electron microscopy, atomic
force microscopy, and transmission electron microscopy) have been employed to probe the morphological characteristics as well
as to investigate the exfoliation of RGO sheets. The TiO2-RGO composite exhibited excellent photocatalysis of hydrogen evolution.
![MediaObjects/12274_2011_136_Fig1_HTML.gif](/content/LW6Q21N11874636M/MediaObjects/12274_2011_136_Fig1_HTML.gif) |
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Keywords: | Reduced graphene oxide TiO2 hydrothermal ionic liquid nanocomposite |
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