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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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Su, Ren
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2021Tailoring the stoichiometry of C 3 N 4 nanosheets under electron beam irradiationcitations
- 2021Tailoring the stoichiometry of C3N4 nanosheets under electron beam irradiation
- 2021Tailoring the stoichiometry of C3N4 nanosheets under electron beam irradiationcitations
- 2019Structural changes during water-mediated amorphization of semiconducting two-dimensional thiostannatescitations
- 2019Promotion Mechanisms of Au Supported on TiO2 in Thermal- And Photocatalytic Glycerol Conversioncitations
- 2019Promotion Mechanisms of Au Supported on TiO 2 in Thermal- And Photocatalytic Glycerol Conversioncitations
- 2019Promotion mechanisms of Au supported on TiO2 in thermal- and photocatalytic glycerol conversioncitations
- 2016Band gap narrowing of Sns2 superstructures with improved hydrogen productioncitations
- 2016Band gap narrowing of SnS2 superstructures with improved hydrogen productioncitations
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article
Promotion Mechanisms of Au Supported on TiO2 in Thermal- And Photocatalytic Glycerol Conversion
Abstract
<p>Catalytic glycerol conversion by means of either photon or thermal energy is of great importance and can be realized by metal supported on TiO<sub>2</sub> systems. Although various procedures have been employed to synthesize efficient metal/TiO<sub>2</sub> catalysts, the promotional mechanisms for both reactions are still unclear due to the lack of well-defined systems. Here, we have deposited gold nanoparticles on a series of highly crystalline anatase TiO<sub>2</sub> substrates with different crystallite sizes (7, 12, 16, 28 nm) by both direct precipitation and sol-immobilization methods to examine the effect of metal deposition methods and TiO<sub>2</sub> sizes on both photo- and thermal catalytic glycerol reforming. For photocatalytic H<sub>2</sub> evolution from glycerol, optimum performance was observed for the Au supported on 12 nm TiO<sub>2</sub> for both deposition methods. For thermal catalytic glycerol oxidation, all catalysts show a similar selectivity to glycerate (>70%) regardless of the TiO<sub>2</sub> size and metal deposition method; however, the metal deposition method significantly influences the catalytic activity. In situ UV-vis spectrometry reveals that the optimized photocatalytic performance originates from enhanced charge transfer kinetics and a more negative Fermi level for proton reduction, whereas electrochemical analysis reveals that the promoted glycerol oxidation is caused by the enhanced oxygen reduction half-reaction.</p>