期刊
JOURNAL OF MATERIALS SCIENCE
卷 49, 期 3, 页码 1066-1075出版社
SPRINGER
DOI: 10.1007/s10853-013-7784-9
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资金
- National Natural Sciences Foundation of China [51202052, 91023030]
- International Scientific and Technological Cooperation Project of Anhui Province [10080703017]
- Joint Research Projects in Yangtze River Delta [11495810100]
The adsorption and photocatalysis of natural organic matter, fulvic acid (FA), by TiO2-graphene (T-G) composites under UV254 was investigated in this study. A one-step solvothermal reaction of graphene oxide (GO) and titanium(IV) butoxide (Ti(OBu)(4)) in an ethanol solvent was used to prepare T-G composites. During the solvothermal process, both of the reduction of GO and depositing of T nanoparticles were achieved. Field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were applied to investigate the morphologies and structures of the as-prepared samples. Results from this study indicated that the as-prepared T-G composites exhibited great adsorptivity and photocatalytic activity of FA. Two removal mechanisms have been identified as significant for FA aqueous interacting with T-G composites: surface adsorption and photocatalytic degradation. It is revealed that the photocatalytic degradation of FA is correlated to surface adsorption, an effective surface adsorption resulting in a quick degradation.
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