| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Simonsen, Søren Bredmose
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Operando Electron Microscopy and Impedance Analysis of Solid Oxide Electrolysis and Fuel Cellscitations
- 2023Chemical Insights into the Formation of Colloidal Iridium Nanoparticles from In Situ X-ray Total Scatteringcitations
- 2022Surfactant-free syntheses and pair distribution function analysis of osmium nanoparticlescitations
- 2021Development of high-temperature electrochemical TEM and its application on solid oxide electrolysis cells
- 2021Development of high-temperature electrochemical TEM and its application on solid oxide electrolysis cells
- 2021Co oxidation state at LSC-YSZ interface in model solid oxide electrochemical cellcitations
- 2020Solvent-dependent growth and stabilization mechanisms of surfactant-free colloidal Pt nanoparticlescitations
- 2019Electrospun nanofiber materials for energy and environmental applications citations
- 2019Silver Modified Cathodes for Solid Oxide Fuel Cellscitations
- 2019Silver Modified Cathodes for Solid Oxide Fuel Cellscitations
- 2019Electrospun nanofiber materials for energy and environmental applicationscitations
- 2019Structural Characterization of Membrane-Electrode-Assemblies in High Temperature Polymer Electrolyte Membrane Fuel Cellscitations
- 2019Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceriacitations
- 2019Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceriacitations
- 2018Solutions for catalysis: A surfactant-free synthesis of precious metal nanoparticle colloids in mono-alcohols for catalysts with enhanced performances
- 2016Electron microscopy investigations of changes in morphology and conductivity of LiFePO4/C electrodescitations
- 2016Effects of strong cathodic polarization of the Ni-YSZ interfacecitations
- 2016Comparison of ultramicrotomy and focused-ion-beam for the preparation of TEM and STEM cross section of organic solar cellscitations
- 2016In-Situ Transmission Electron Microscopy on Operating Electrochemical Cells
- 2016Scandium-doped zinc cadmium oxide as a new stable n-type oxide thermoelectric materialcitations
- 2016Nanocomposite YSZ-NiO Particles with Tailored Structure Synthesized in a Two-Stage Continuous Hydrothermal Flow Reactor
- 2016Synthesis of ligand-free CZTS nanoparticles via a facile hot injection routecitations
- 2015Environmental TEM study of the dynamic nanoscaled morphology of NiO/YSZ during reductioncitations
- 2014NiO/YSZ Reduction for SOFC/SOEC Studied In Situ by Environmental Transmission Electron Microscopycitations
- 2011Sintering of oxide-supported Pt and Pd nanoparticles in air studied by in situ TEM
- 2011Atomic-scale non-contact AFM studies of alumina supported nanoparticles
Places of action
| Organizations | Location | People |
|---|
conferencepaper
Solutions for catalysis: A surfactant-free synthesis of precious metal nanoparticle colloids in mono-alcohols for catalysts with enhanced performances
Abstract
To optimize precious metal nanocatalysts, an optimal set of nanoparticle (NP) properties (<i>composition, size, loading, etc</i>.)must match specific operating conditions. Synthesis routes offeringindependent control on NP properties are then highly desired: (1) tostudy which combinations of properties are key for an application, (2)to optimize performances, (3) to develop industrial applications if theproduction method is scalable.<br/>Independent control on heterogeneouscatalysts' properties is challenging with the direct formation of NPs onsupports: agglomeration and NP formation in pores lead tounderutilization of the precious metal under catalytic operation.Ourstrategy is to use colloids to optimise independently several physicalproperties of the NPs.Yet in colloidal productions, surfactants aretypically required and need to be removed in energy and time consumingsteps, resulting in loss of catalytic performances due to sintering andpoisoning.<br/><br/>A surfactant-free colloidal synthesis adressing theprevious challenges is presented. Pt NPs are obtained at low temperature(< 80 C) in alkaline mono-alcohols. The method is robust,reproducible, promisingly scalable and flexible (e.g. using microwaves,hot water bath, UV irradiation, flow systems). The mono-alcoholsynthesis shows multiple benefits over alternative routes. It isinterestingly sensitive to parameters screened in other approaches. Theinfluence of solvents,<sup> </sup>time of synthesis and nature of base<sup> </sup>toachieve NP size in the range 1-6 nm and colloidal stability overseveral months, including in aqueous media, are detailed. The NPs arecharacterized by TEM, STEM, FTIR, SAXS, PDF, XAS, and electrochemicalmethods.<br/>The energy, time and cost effective production of NPs in lowboiling point solvents leads to improved catalytic performancescompared to industrial benchmark for chemical production (butanonehydrogenation) and energy conversion (oxygen reduction).