Journal
NANO RESEARCH
Volume 4, Issue 3, Pages 274-283Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-010-0079-4
Keywords
TiO2/graphene composites; electron beam (EB) irradiation; photocatalytic degradation; methyl orange
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Funding
- National Natural Science Foundation of China [20871081]
- Science and Technology Commission of Shanghai Municipality [10QH1401000, 10DZ0500100]
- State Key Laboratory of Chemical Engineering (ECUST)
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry (ECNU)
- Shanghai Leading Academic Disciplines [S30109]
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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.
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