Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 7, Pages 951-955Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201501376
Keywords
Continuous flow reactors; Supported catalysts; Nanoparticles; Gold; Organic-inorganic hybrid composites; Miniaturization
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Funding
- Austrian Science Fund (FWF) [P24557-N19]
- Austrian Federal Ministry of Science, Research and Economy
- National Foundation for Research, Technology and Development through the Christian Doppler Laboratory for Combinatorial Oxide Chemistry (COMBOX)
- Austrian Science Fund (FWF) [P24557] Funding Source: Austrian Science Fund (FWF)
- Austrian Science Fund (FWF) [P 24557] Funding Source: researchfish
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We report on the preparation of new hybrid organic-inorganic multiporous monolithic capillary columns carrying gold nanoparticles of 5, 10, 50, and 100 nm size and their use as flow-through catalytic platforms for aqueous liquid-phase reduction reactions. We found that the flow-through performance of the reactors depends not only on the size of the gold nanoparticles but also on the interplay of the pore size of the scaffolds and the catalytically available gold surface within the system, that is, loading an increased number of gold nanoparticles of smaller size does not necessarily result in strictly improved performance. This indicates the importance of the interplay between the nanopore size of the scaffolds and the catalytically active gold surface existing within the system. Demonstration of the highly efficient catalytic flow-through operation within seconds and the repeated use of the reactors without loss of performance indicates their excellent suitability as microfluidic device elements.
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