Journal
NEW JOURNAL OF CHEMISTRY
Volume 35, Issue 2, Pages 353-359Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0nj00623h
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Funding
- National Natural Science Foundation of China [20925621, 20976054]
- Key Project of Science and Technology for Ministry of Education [107045]
- Shanghai Municipal Education Commission [09ZZ58]
- Program of Shanghai Subject Chief Scientist [08XD1401500]
- Shanghai Leading Academic Discipline Project [B502]
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The photocatalytic activity of TiO2 is limited by the aggregation of nanoparticles and the fast electron-hole pair recombination. Graphene sheets, with high specific surface area and unique electronic properties, can be used as a good support for TiO2 to enhance the photocatalytic activity. Herein, we prepared graphene-TiO2 (G-TiO2) composites through a one-pot solvothermal reaction by using graphite oxide (GO) and tetrabutyl titanate as starting materials. TiO2 particles with anatase phase and a narrow size distribution were dispersed on the surface of graphene sheets uniformly. The fluorescence quenching confirmed that graphene acted as an electron-acceptor material to effectively hinder the electron-hole pair recombination of TiO2. The product prepared with 30 mg of GO and 8 h of reaction time exhibited excellent photocatalysis to methylene blue (MB) degradation under irradiation of simulated sunlight. Such intriguing photocatalyst may find significant applications in various fields.
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