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Dalton Transactions
Page 10 of 11
DOI: 10.1039/C9DT04485J
ARTICLE
Journal Name
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F. Ferretti, A. P. C. Ribeiro, E. Alegria, A. M. Ferraria, M. N.
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results revealed that no clear loss of activity was observed in
five runs (Figure 4B). PXRD characterization showed that the
structure of catalyst was mostly retained (Figure 4C). ICP
measurements indicated that only traces of metal (< 1% of the
total vanadium or aluminum) were detected. SEM image of
V2O5‐Al13 nanohybrid after five catalytic runs was shown in
Figure S19, which revealed a certain degree of aggregation
through drying. The HR‐TEM image also indicated that the
hybrid material after catalysis still showed the shape of the
sheet stack (Figure S20). The above results commonly
confirmed that the V2O5‐Al13 nanohybrid was a stable and
highly efficient catalyst for aerobic oxidation of alcohols.
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Conclusion
In summary, a porous V2O5‐Al13 nanohybrid was for the first
time synthesized through electrostatic self‐assembly between
positively charged Keggin Al13 and negatively charged
exfoliated V2O5 nanosheets for selective catalytic oxidation of
alcohols under oxygen atmosphere. The experiment results
exhibited that the V2O5‐Al13 nanohybrid has a marked
superiority (86.2% con.) over catalytic activity than bulk V2O5
and exfoliated V2O5 nanosheets, which is attributed to a
synergistic coupling of adsorption‐catalysis between the V2O5
nanosheets and Keggin Al13. Moreover, the V2O5‐Al13
naohybrid maintained a high conversion and selectivity during
five recycles and the recycled catalyst still has a high stability.
The combination of highly catalytic performance and high
stability enables the V2O5‐Al13 nanohybrid as an excellent
catalyst for replacing previously expensive metals‐based
catalyst.
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,
Conflicts of interest
There are no conflicts to declare.
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by the National Natural Science Foundation of China (Grant
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