| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Brintlinger, Todd
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2020Stabilization of reduced copper on ceria aerogels for CO oxidationcitations
- 2020Power of Aerogel Platforms to Explore Mesoscale Transport in Catalysis.citations
- 2018(Invited) Nanoscale Design and Modification of Plasmonic Aerogels for Photocatalytic Hydrogen Generation
- 2017Oxidation-stable plasmonic copper nanoparticles in photocatalytic TiO2 nanoarchitecturescitations
- 2017Plasmonic Aerogels as a Three-Dimensional Nanoscale Platform for Solar Fuel Photocatalysiscitations
- 2017Effects of Nanoscale Interfacial Design on Photocatalytic Hydrogen Generation Activity at Plasmonic Au–TiO<sub>2</sub> and Au–TiO<sub>2</sub>/Pt Aerogels
- 2017Oxidation−Stable Plasmonic Copper Nanoparticles in Photocatalytic TiO<sub>2</sub> Nanoarchitectures
- 2013Plasmonic enhancement of visible-light water splitting with Au-TiO2 composite aerogels.citations
- 2013Electron Tomography of Gold Nanoparticles in Titania Composite Aerogels: Probing Structure to Understand Photochemistry
- 2008Electron thermal microscopycitations
Places of action
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article
Stabilization of reduced copper on ceria aerogels for CO oxidation
Abstract
Photodeposition of Cu nanoparticles on ceria (CeO2) aerogels generates a high surface area composite material with sufficient metallic Cu to exhibit an air-stable surface plasmon resonance. We show that balancing the surface area of the aerogel support with the Cu weight loading is a critical factor in retaining stable Cu0. At higher Cu weight loadings or with a lower support surface area, Cu aggregation is observed by scanning and transmission electron microscopy. Analysis of Cu/CeO2 using X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy finds a mixture of Cu2+, Cu+, and Cu0, with Cu+ at the surface. At 5 wt% Cu, Cu/CeO2 aerogels exhibit high activity for heterogeneous CO oxidation catalysis at low temperatures (94% conversion of CO at 150 °C), substantially out-performing Cu/TiO2 aerogel catalysts featuring the same weight loading of Cu on TiO2 (20% conversion of CO at 150 °C). The present study demonstrates an extension of our previous concept of stabilizing catalytic Cu nanoparticles in low oxidation states on reducing, high surface area aerogel supports. Changing the reducing power of the support modulates the catalytic activity of mixed-valent Cu nanoparticles and metal oxide support.