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MIL-53(Fe)-graphene nanocomposites: Efficient visible-light photocatalysts for the selective oxidation of alcohols
- Source :
- Applied Catalysis B: Environmental. 198:112-123
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- A series of MIL-53(Fe)-graphene nanocomposite photocatalysts were synthesized by a facile one-pot solvothermal reaction. All materials have been thoroughly characterized by FT-IR, SEM, TEM, PXRD, UV–vis DRS and PL analysis. It was demonstrated that the introducing of graphene on the MIL-53(Fe) would minimize the recombination of photogenerated electron-hole pairs, thus, leading to the enhancement of photocatalytic activity. MIL-53(Fe)-graphene nanocomposite was an efficient catalyst towards the photocatalytic selectively oxidation of alcohols to the corresponding aldehydes or ketones under visible light and ambient conditions. High selectivity of the aldehydes or ketones (99%) were obtained. Meanwhile, the catalyst can be recycled at least four times without loss of catalytic efficiency. A possible photocatalytic reaction mechanism involving a direct photogenerated hole-oxidation process was also investigated in detail by the active species trapping experiments and the related electrochemical analysis.
- Subjects :
- Materials science
Nanocomposite
Graphene
Process Chemistry and Technology
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
Photochemistry
01 natural sciences
Catalysis
0104 chemical sciences
law.invention
law
Alcohol oxidation
Photocatalysis
0210 nano-technology
Powder diffraction
General Environmental Science
Visible spectrum
Subjects
Details
- ISSN :
- 09263373
- Volume :
- 198
- Database :
- OpenAIRE
- Journal :
- Applied Catalysis B: Environmental
- Accession number :
- edsair.doi...........ede389f914c6d9568b644ae5fc5d31e4