| 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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Dam, Bernard
Delft University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2023Tuning the Properties of Thin-Film TaRu for Hydrogen-Sensing Applicationscitations
- 2020Metallurgical Synthesis of Mg2FexSi1- x Hydridecitations
- 2019Metal-polymer hybrid nanomaterials for plasmonic ultrafast hydrogen detectioncitations
- 2019Metal-polymer hybrid nanomaterials for plasmonic ultrafast hydrogen detectioncitations
- 2019Effect of the addition of zirconium on the photochromic properties of yttrium oxy-hydridecitations
- 2019Suppressing H 2 Evolution and Promoting Selective CO 2 Electroreduction to CO at Low Overpotentials by Alloying Au with Pdcitations
- 2019Suppressing H2 Evolution and Promoting Selective CO2 Electroreduction to CO at Low Overpotentials by Alloying Au with Pdcitations
- 2018Elastic versus Alloying Effects in Mg-Based Hydride Filmscitations
- 2017Enhancement of Destabilization and Reactivity of Mg Hydride Embedded in Immiscible Ti Matrix by Addition of Crcitations
- 2017Photochromism of rare-earth metal-oxy-hydridescitations
- 2016Interface and strain effects on the H-sorption thermodynamics of size-selected Mg nanodotscitations
- 2016Photoelectrochemical water splitting with porous α-Fe2O3 thin films prepared from Fe/Fe-oxide nanoparticlescitations
- 2016Amorphous Metal-Hydrides for Optical Hydrogen Sensingcitations
- 2015Destabilization of Mg Hydride by Self-Organized Nanoclusters in the Immiscible Mg-Ti System
- 2012Optical hydrogen sensors based on metal-hydridescitations
- 2012Combined XPS and first principle study of metastable Mg-Ti thin filmscitations
- 2011Thin film metal hydrides for hydrogen storage applicationscitations
- 2010X-ray photoelectron spectroscopy study of MgH2 thin films grown by reactive sputteringcitations
- 2009Lightweight sodium alanate thin films grown by reactive sputteringcitations
- 2009Hydrogenography of PdHx thin films: Influence of H-induced stress relaxation processescitations
- 2008Optimization of Mg-based fiber optic hydrogen detectors by alloying the catalystcitations
- 2006The growth-induced microstructural origin of the optical black state of Mg 2 NiH x thin films
- 2006Structural and optical properties of MgxAl1-xH y gradient thin filmscitations
Places of action
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article
Suppressing H 2 Evolution and Promoting Selective CO 2 Electroreduction to CO at Low Overpotentials by Alloying Au with Pd
Abstract
<p>CO<sub>2</sub>electroreduction is a promising technology to produce chemicals and fuels from renewable resources. Polycrystalline and nanostructured metals have been tested extensively while less effort has been spent on understanding the performance of bimetallic alloys. In this work, we study compositionally variant, smooth Au-Pd thin film alloys to discard any morphological or mesoscopic effect on the electrocatalytic performance. We find that the onset potential of CO formation exhibits a strong dependence on the Pd content of the alloys. Strikingly, palladium, a hydrogen evolution catalyst with reasonable exchange current density, suppresses hydrogen evolution when alloyed with gold in the presence of CO<sub>2</sub>. Cyclic voltammetry, in situ surface enhanced infrared absorption spectroscopy, and potential-dependent online product analysis strongly suggest that by alloying Au with Pd a significant increase in the surface coverage of adsorbed CO occurs with increasing Pd content at low overpotentials (e.g., approximately -0.35 V vs RHE). Such an increase in CO coverage suppresses H<sub>2</sub>evolution due to the lack of vacant active sites. Moreover, the overall increase in the binding energy with the CO<sub>2</sub>intermediates gained with the addition of Pd increases the CO production at low overpotentials, where polycrystalline Au suffers from poor CO<sub>2</sub>adsorption and poor selectivity for CO production. These results show that promising CO<sub>2</sub>reduction electrode materials (e.g., Au) can be alloyed not only to tune the catalyst's activity but also to deliberately decrease the availability of surface sites for competitive H<sub>2</sub>evolution.</p>