| 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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Rolison, Debra
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2021Designing Oxide Aerogels with Enhanced Sorptive and Degradative Activity for Acute Chemical Threatscitations
- 2020Mesoporous Copper Nanoparticle/TiO2 Aerogels for Room-Temperature Hydrolytic Decomposition of the Chemical Warfare Simulant Dimethyl Methylphosphonatecitations
- 2020Electronic Metal–Support Interactions in the Activation of CO Oxidation over a Cu/TiO2 Aerogel Catalystcitations
- 2020Stabilization of reduced copper on ceria aerogels for CO oxidationcitations
- 2020Power of Aerogel Platforms to Explore Mesoscale Transport in Catalysis.citations
- 2019(Keynote) Effect of Architecturally Expressed Electrodes and Catalysts on Energy Storage/Conversion in Aqueous Electrolytes
- 2018Trapping a Ru2O3 Corundum-like Structure at Ultrathin, Disordered RuO2 Nanoskins Expressed in 3Dcitations
- 2017Oxidation-stable plasmonic copper nanoparticles in photocatalytic TiO2 nanoarchitecturescitations
- 2017Plasmonic Aerogels as a Three-Dimensional Nanoscale Platform for Solar Fuel Photocatalysiscitations
- 2017Competitive Oxygen Evolution in Acid Electrolyte Catalyzed at Technologically Relevant Electrodes Painted with Nanoscale RuO2citations
- 2017Electroless Deposition of Disordered RuO<sub>2</sub> Nanoskins: An Example from the Fourth Quadrant of Electronic Materials
- 2016Aerogel Architectures Boost Oxygen‐Evolution Performance of NiFe2Ox Spinels to Activity Levels Commensurate with Nickel‐Rich Oxidescitations
- 2015Routes to 3D conformal solid-state dielectric polymers: electrodeposition versus initiated chemical vapor depositioncitations
- 2008Self-Limiting Electropolymerization of o-Aminophenol on Ultraporous Carbon Nanoarchitectures for Electrochemical Capacitor Applicationscitations
Places of action
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article
Oxidation-stable plasmonic copper nanoparticles in photocatalytic TiO2 nanoarchitectures
Abstract
Ultraporous copper/titanium dioxide (Cu/TiO2) aerogels supporting <5 nm diameter copper nanoparticles are active for surface plasmon resonance (SPR)-driven photocatalysis. The extended nanoscale Cu‖TiO2 junctions in Cu/TiO2 composite aerogels—which arise as a result of photodepositing copper at the surface of the nanoparticulate-bonded TiO2 aerogel architecture—stabilize Cu against oxidation to an extent that preserves the plasmonic behavior of the nanoparticles, even after exposure to oxidizing conditions. The metallicity of the Cu nanoparticles within the TiO2 aerogel is verified by aberration-corrected scanning transmission electron microscopy, electron energy-loss spectroscopy, and infrared spectroscopy using CO binding as a probe to distinguish Cu(0) from Cu(I). In contrast, photoreduction of Cu(II) at a commercial nanoscale anatase TiO2 powder with primary particle sizes significantly larger than those in the aerogel results in a copper oxide/TiO2 composite that exhibits none of the plasmonic character of Cu nanoparticles. We attribute the persistence of plasmonic Cu nanoparticles without the use of ligand stabilizers to the arrangement of Cu and TiO2 within the aerogel architecture where each Cu nanoparticle is in contact with multiple nanoparticles of the reducing oxide. The wavelength dependence of the photoaction spectra for Cu/TiO2 aerogel films reveals visible-light photocatalytic oxidation activity initiated by an SPR-driven process—as opposed to photo-oxidation initiated by excitation of narrow-bandgap copper oxides.