期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 582, 期 -, 页码 236-240出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.08.062
关键词
TiO2; Reduced graphene oxide; Hydrothermal; Photocatalysis
资金
- National Natural Science Foundation of China [60806045, 11074220]
- Natural Science Foundation of Zhejiang Province [Y4100310]
- Qianjiang Talent Program of Zhejiang Province [2013R10060]
- Open Foundation of Zhejiang Provincial Top Key Academic Discipline of Applied Chemistry and Eco-Dyeing AMP
- Finishing Engineering [YR2012008]
- Scientific Research Fund of Zhejiang Provincial Education Department [Y201223380]
- 521 Talents Project in Zhejiang Sci-Tech University
A facile and efficient one-step hydrothermal approach has been developed to synthesize chemically bonded TiO2/reduced graphene oxide (RGO) nanocomposites with Ti(SO4)(2) and graphene oxide (GO) as precursors and ethanol/water solvent as a reducing agent. This approach aims to realize a partial reduction of GO and a growth of anatase TiO2 nanoparticles on RGO sheets simultaneously. The morphology and microstructure characterizations of TiO2/RGO nanocomposites reveal that this method leads to close interfacial contact of TiO2/RGO and efficient dispersion of TiO2 nanocrystals on the surface of RGO sheets. The TiO2/RGO nanocomposites exhibit superior photocatalytic activity compared to bare TiO2 nanoparticles and a mechanical mixing TiO2 + RGO sample in the degradation of Rhodamine B. Based on the photoluminescence spectrum and photocurrent response measurements, the enhanced photocatalytic activity of TiO2/RGO is mainly attributed to the excellent electron trapping and transportation properties of RGO. (C) 2013 Elsevier B.V. All rights reserved.
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