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PANI/FeUiO-66 nanohybrids with enhanced visible-light promoted photocatalytic activity for the selectively aerobic oxidation of aromatic alcohols
- Source :
- Applied Catalysis B: Environmental. 210:484-494
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- Metal-organic frameworks (MOFs), a new class of porous crystalline materials, have attracted great interest as fascinating applications for eco-friendly photocatalysts. In this study, new hybrid MOFs, iron doped zirconium based metal-organic frameworks, FeUiO-66, were successfully synthesized by hydrothermal method firstly. Then the PANI/FeUiO-66 nanohybrids were fabricated through annealing process. The photocatalytic performances of the obtained PANI/FeUiO-66 nanohybrids were evaluated by selectively oxidation of various alcohol substrates using molecular oxygen as a benign oxidant. Boosting by synergistically multi-doped effect, the catalytic activity of the novel PANI/FeUiO-66 is remarkably higher than that of bare UiO-66 under visible light irradiation at ambient temperature. Further analyses revealed that the enhancement of photocatalytic activity originated from the two aspects. On one hand, when the Fe doped into the framework, valence fluctuation of Fe 2+ /Fe 3+ could reduce the recombination rate of photoexcited carriers. On the other hand, based on energy band matching between FeUiO-66 and PANI, the easily formed heterostructures from PANI and FeUiO-66 can efficiently enhance the separation of photogenerated carriers. Furthermore, by virtue of unique advantage of the position of the CB and VB of FeUiO-66, alcohols could be selectively oxidized by the O 2 − and h + . Remarkably, it is expected that the MOF-conductive conjugated polymers nanohybrids could be used as efficient visible light driven photocatalysts for organic transformation with high selectivity under eco-friendly conditions.
- Subjects :
- chemistry.chemical_classification
Zirconium
Valence (chemistry)
Materials science
Annealing (metallurgy)
Process Chemistry and Technology
chemistry.chemical_element
02 engineering and technology
Polymer
Conjugated system
010402 general chemistry
021001 nanoscience & nanotechnology
Photochemistry
01 natural sciences
Catalysis
0104 chemical sciences
chemistry
Photocatalysis
Organic chemistry
0210 nano-technology
General Environmental Science
Visible spectrum
Subjects
Details
- ISSN :
- 09263373
- Volume :
- 210
- Database :
- OpenAIRE
- Journal :
- Applied Catalysis B: Environmental
- Accession number :
- edsair.doi...........b96a15ee2610038f601252da6b97836e