Journal
RSC ADVANCES
Volume 1, Issue 7, Pages 1245-1249Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ra00298h
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Funding
- Special Project for Nanotechnology of Shanghai [1052 nm02700]
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TiO2-reduced graphene oxide (RGO) composites are successfully synthesized via the microwave-assisted reduction of graphite oxide in a TiO2 suspension using a microwave synthesis system. Their morphology, structure and photocatalytic performance in the reduction of Cr(VI) are characterized by scanning electron microscopy, transmission electron microscopy, atomic force microscopy, X-ray diffraction spectroscopy and UV-vis absorption spectrophotometer. The results show that in the composite the RGO nanosheets are densely decorated by TiO2 nanoparticles, which displays a good combination between RGO and TiO2. TiO2-RGO composites exhibit enhanced photocatalytic performance for the reduction of Cr(VI) with a maximum removal rate of 91% under UV light irradiation as compared with pure TiO2 (83%) and commercial TiO2 P25 (70%) due to the increased light absorption intensity and range as well as the reduction of electron-hole pair recombination in TiO2 with the introduction of RGO.
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