期刊
APPLIED SURFACE SCIENCE
卷 425, 期 -, 页码 107-116出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.07.050
关键词
MIL-53(Fe); g-C3N4; Cr(VI); Visible light; Photocatalysis
类别
资金
- National Natural Science Foundation of China [41673093, 41473108, 21507086, 51508327]
- Shanghai Sailing Program [14YF1409900, 16YF1408100]
In this study, hybrid nanocomposites based on Fe-based MOF and graphitic carbon nitride (g-C3N4) were developed by a facile solvothermal method. The as-prepared materials were characterized by XRD, FESEM, TEM, XPS and PL analysis. It was showed that the introduction of a certain amount of g-C3N4 on the surface of MIL-53(Fe) would improve the separation and migration rate of photo-induced charges, consequently resulting in the boost of photocatalytic efficiency. Compared with g-C3N4 and MIL-53(Fe), the CMFe composites displayed more excellent visible light-resposive photocatalytic activity for the reduction of Cr(VI). The optimal doping content of g-C3N4 in g-C3N4/MIL-53(Fe) composite was determined to be 3.0 wt%, and it showed about 2.1 and 2.0 times as high photocatalytic efficiency for the reduction of Cr(VI) as that of pure g-C3N4 and MIL-53(Fe), respectively. Meanwhile, the composite exhibited good reusability and stability in the process of cyclic experiments. A possible photocatalytic reaction mechanism was also investigated in detail by the related electrochemical analysis. (C) 2017 Elsevier B.V. All rights reserved.
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