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Westsson, E.E. (author), Picken, S.J. (author), Koper, G.J.M. (author)
journal article 2019
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Feng, J. (author), Chen, Dong (author), Sediq, Ahmad S. (author), Romeijn, Stefan (author), Tichelaar, F.D. (author), Jiskoot, Wim (author), Koper, M.T.M. (author)
A key enabling step in leveraging the properties of nanoparticles (NPs) is to explore new, simple, controllable, and scalable nanotechnologies for their syntheses. Among "wet" methods, cathodic corrosion has been used to synthesize catalytic aggregates with some control over their size and preferential faceting. Here, we report on a...
journal article 2018
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Birdja, Yuvraj Y. (author), Vos, Rafaƫl E. (author), Wezendonk, T.A. (author), Jiang, Lin (author), Kapteijn, F. (author), Koper, M.T.M. (author)
2 journal article 2018
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Vos, J.G. (author), Wezendonk, T.A. (author), Jeremiasse, Adriaan W. (author), Koper, Marc T.M. (author)
The oxygen evolution reaction (OER) and chlorine evolution reaction (CER) are electrochemical processes with high relevance to water splitting for (solar) energy conversion and industrial production of commodity chemicals, respectively. Carrying out the two reactions separately is challenging, since the catalytic intermediates are linked by...
journal article 2018
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Sachdeva, S. (author), Koper, S.J.H. (author), Sabetghadam Esfahani, A. (author), Soccol, Dimitri (author), Gravesteijn, Dirk J. (author), Kapteijn, F. (author), Sudholter, Ernst J. R. (author), Gascon Sabate, J. (author), de Smet, L.C.P.M. (author)
-MIL-53(Al) were dispersed in a Matrimid polymer matrix with...
journal article 2017
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Huang, Yi Fan (author), Kooyman, P.J. (author), Koper, M.T.M. (author)
Understanding the atomistic details of how platinum surfaces are oxidized under electrochemical conditions is of importance for many electrochemical devices such as fuel cells and electrolysers. Here we use in situ shell-isolated nanoparticle-enhanced Raman spectroscopy to identify the intermediate stages of the electrochemical oxidation of...
journal article 2016
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Diaz-Morales, Oscar (author), Raaijman, Stefan (author), Kortlever, Ruud (author), Kooyman, P.J. (author), Wezendonk, T.A. (author), Gascon Sabate, J. (author), Fu, W. (author), Koper, M.T.M. (author)
The development of active, cost-effective and stable oxygen-evolving catalysts is one of the major challenges for solar-to-fuel conversion towards sustainable energy generation. Iridium oxide exhibits the best available compromise between catalytic activity and stability in acid media, but it is prohibitively expensive for large-scale...
journal article 2016
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Vilcinskas, K. (author), Jansen, K.M.B. (author), Mulder, F.M. (author), Picken, S.J. (author), Koper, G.J.M. (author)
We report on the thermal, electrical, and mechanical properties of alginate biopolymer nanocomposites prepared by solution casting with various amounts of graphene oxide (GO) or reduced GO (rGO). Our data shows that the thermal stability of alginate nanocomposites can be improved by the introduction of cross-linking through divalent metal...
journal article 2016
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Negro, E. (author), Stassi, A. (author), Baglio, V. (author), Arico, A.S. (author), Koper, G.J.M. (author)
Carbon graphitic structures that differ in morphology, graphiticity and specific surface area were used as support for platinum for Oxygen Reduction Reaction (ORR) in low temperature fuel cells. Graphitic supports were first non-covalently functionalized with pyrene carboxylic acid (PCA) and, subsequently, platinum nanoparticles were nucleated...
journal article 2015
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Latsuzbaia, R. (author), Negro, E. (author), Koper, G.J.M. (author)
The design of a synthesis strategy for metal nanoparticles by templating dense microemulsions is proposed. Particle size is controlled by surfactant size rather than by microemulsion composition. The strategy was demonstrated with various systems with different surfactant: cationic, anionic and non-ionic and of different sizes. Formulations were...
journal article 2015
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Westsson, E.E. (author), Koper, G.J.M. (author)
Nanometer-sized materials have significantly different chemical and physical properties compared to bulk material. However, these properties do not only depend on the elemental composition but also on the structure, shape, size and arrangement. Hence, it is not only of great importance to develop synthesis routes that enable control over the...
journal article 2014
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Negro, E. (author), Latsuzbaia, R. (author), De Vries, A.H. (author), Koper, G.J.M. (author)
Microemulsions are exciting systems that are promising as tuneable self-assembling templating reaction vessels at the nanoscale. Determination of the nano-structure of microemulsions is, however, not trivial, and there are fundamental questions regarding their design. We were able to reproduce experimental data for an important microemulsion...
journal article 2014
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Negro, E. (author), Dieci, M. (author), Sordi, D. (author), Kowlgi, K. (author), Makkee, M. (author), Koper, G.J.M. (author)
We report on the production of Carbon Nano Networks (CNNs) from dense microemulsions in which catalyst nanoparticles have been synthesized. CNNs are 3D carbon networks, consisting of branches and junctions, and are mesoporous, graphitic, and conductive being suitable as electrode materials.
journal article 2014
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Dobrowolska, M.E. (author), Koper, G.J.M. (author)
Surfactant-free emulsion polymerization involving a nonionic, and hence uncharged initiator presents a new approach towards environmentally friendly procedures to synthesize latex particles. Under optimal solvent conditions, notably pH and ionic strength, the latex particles are stabilized by the natural development of ionic charge at the...
journal article 2013
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Negro, E. (author), De Vries, M. (author), Latsuzbaia, R. (author), Koper, G.J.M. (author)
conference paper 2013
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Negro, E. (author), Dieci, M. (author), Sordi, D. (author), Koper, G.J.M. (author)
conference paper 2013
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Latsuzbaia, R. (author), Nergo, E. (author), Koper, G.J.M. (author)
conference paper 2013
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Latsuzbaia, R. (author), Negro, E. (author), Koper, G.J.M. (author)
conference paper 2013
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Latsuzbaia, R. (author), Negro, E. (author), Koper, G.J.M. (author)
Platinum nanoparticles, which are used as catalysts in Proton Exchange Membrane Fuel Cells (PEMFC), tend to degrade after long-term operation. We discriminate the following mechanisms of the degradation: poisoning, migration and coalescence, dissolution, and electrochemical Ostwald ripening. There are two ways to tackle this problem. The first...
conference paper 2013
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Koper, G.J.M. (author), Boekhoven, J. (author), Hendriksen, W.E. (author), Eelkema, R. (author), Van Esch, J.H. (author)
Self-assembled systems formed of micelles or vesicles have frequently been discussed as model systems for self-healing materials because their structure is dictated by thermodynamics and hence they quickly restore upon perturbation. In this aspect, they mimic many natural systems such as biological cells. However, in contrast to most synthetic...
conference paper 2013
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