Research Article

Nano Research

, Volume 4, Issue 3, pp 274-283

A facile one-step synthesis of TiO2/graphene composites for photodegradation of methyl orange

  • Haijiao ZhangAffiliated withInstitute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University
  • , Panpan XuAffiliated withInstitute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University
  • , Guidong DuAffiliated withInstitute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University
  • , Zhiwen ChenAffiliated withInstitute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University
  • , Kokyo OhAffiliated withCenter for Environmental Science in Saitama
  • , Dengyu PanAffiliated withInstitute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University
  • , Zheng JiaoAffiliated withInstitute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University Email author 

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Abstract

TiO2/graphene composite photocatalysts have been prepared by a simple liquid phase deposition method using titanium tetrafluoride and electron beam (EB) irradiation-pretreated graphene as the raw materials. The products were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and thermogravimetric analysis. The effects of varying the synthesis parameters such as graphene content, concentration of titanium tetrafluoride solution and irradiation dose were investigated. It was found that the preparation conditions had a significant effect on the structure and properties of the final products. The irradiated graphene was covered with petal-like anatase TiO2 nanoparticles, which were more uniform and smaller in size than those in products synthesized without EB irradiation-pretreated graphene. The photocatalytic activities of the products were evaluated using the photocatalytic degradation of methyl orange as a probe reaction. The results showed that the products synthesized using EB irradiation-pretreated graphene exhibited higher photocatalytic activities than those using graphene without EB irradiation pretreatment.
http://static-content.springer.com/image/art%3A10.1007%2Fs12274-010-0079-4/MediaObjects/12274_2010_79_Fig1_HTML.gif

Keywords

TiO2/graphene composites electron beam (EB) irradiation photocatalytic degradation methyl orange