期刊
RESEARCH ON CHEMICAL INTERMEDIATES
卷 42, 期 4, 页码 3609-3624出版社
SPRINGER
DOI: 10.1007/s11164-015-2234-8
关键词
TiO2; Graphitic carbon nitride; Hybrid composites; Nanosheets; Photocatalyst
资金
- China Postdoctoral Science Foundation [2013M542415]
- National Nature Science Foundation of China [41305112]
- Youth Foundation of Xinjiang Uygur Autonomous Region [2013211B37]
- Chinese Academy of Sciences
- Western Light Program of Chinese Academy of Sciences [XBBS201126]
- Education Department in Xinjiang Uygur Autonomous Region [XJEDU2011I56]
The nanosheets TiO2/g-C3N4 hybrid material with efficient visible-light photocatalytic activity was prepared by a facile solvothermal method. The as-prepared TiO2/g-C3N4 nanosheets composite was thoroughly characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, N-2 adsorption-desorption analysis, UV-Vis diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. As evaluated by the degradation of methylene blue under visible light irradiation, TiO2/g-C3N4 hybrid composites exhibit much higher photocatalytic activity than pristine g-C3N4 and TiO2, respectively. The significant enhancement in photodegradation activity over the TiO2/g-C3N4 photocatalyst can be ascribed to the combined effects of the nanosheet structure and subsequent efficient separation of photogenerated charge carriers. A tentative mechanism for the photodegradation process was proposed.
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