期刊
RSC ADVANCES
卷 7, 期 18, 页码 10668-10674出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra00050b
关键词
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资金
- Natural Science Key Project of the Jiangsu Higher Education Institutions [15KJA220001]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Jiangsu Specially-Appointed Professor Program
g- C3N4/ TiO2 composites with homogeneous well-combined structures were prepared by a simple stirdried method, using dicyandiamide (DICY) and tetrabutyl orthotitanate (TBOT) as the precursors, followed by high-temperature calcination. Various characterization techniques including XRD, FTIR, nitrogen adsorption-desorption, SEM and XPS confirm the formation of an interconnected structure between g-C3N4 and TiO2 in the composites. g-C3N4/ TiO2 composites exhibit much higher photocatalytic activity than that of pure g-C3N4 and TiO2 in the degradation of methylene blue under visible light. In particular, the CT-5 composite prepared with DICY/ TBOT at a mass ratio of 5 : 1, exhibited a photodegradation activity that is about 3.8 times that of TiO2 and 2.9 times that of pure gC(3)N(4). The homogeneous g-C3N4/ TiO2 composite CT-5 can be repetitively used without significant loss of activity. The strong synergistic effect between g-C3N4 and TiO2 achieved by this preparation method greatly improves the separation efficiency of photo-generated electrons and holes, thus offering enhanced photocatalytic performances.
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