Searched for: author:"Kooyman, P.J."
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van Driel, B.A. (author), van den Berg, K. J. (author), Smout, M. (author), Dekker, N (author), Kooyman, P.J. (author), Dik, J. (author)
This study reports on the effect of artists’ paint formulation on degradation rates of TiO2-based oil paints. Titanium white oil paint exists in a multitude of different recipes, and the effect of the formulation on photocatalytic binder<br/>degradation kinetics is unknown. These formulations contain, among others, one or both titanium dioxide...
journal article 2018
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van Driel, B.A. (author), Wezendonk, T.A. (author), van den Berg, K. J. (author), Kooyman, P.J. (author), Gascon Sabate, J. (author), Dik, J. (author)
Titanium white (TiO<sub>2</sub>) has been widely used as a pigment in the 20th century. However, its most photocatalytic form (anatase) can cause severe degradation of the oil paint in which it is contained. UV light initiates TiO<sub>2</sub>-photocatalyzed processes in the paint film, degrading the oil binder into volatile components...
journal article 2017
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Roobol, S. B. (author), Onderwaater, W. G. (author), van Spronsen, M. A. (author), Carla, F (author), Balmes, O (author), Navarro-Paredes, V (author), Vendelbo, S.B. (author), Kooyman, P.J. (author), Elkjær, C. F. (author), Helveg, S (author), Felici, R (author), Frenken, J. W.M. (author), Groot, I.M.N. (author)
In situ surface X-ray diffraction and transmission electron microscopy at 1 bar show massive material transport of platinum during high-temperature NO reduction with H<sub>2</sub>. A Pt(110) single-crystal surface shows a wide variety of surface reconstructions and extensive faceting of the surface. Pt nanoparticles change their morphology...
journal article 2017
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Puspitasari, I. (author), Skupien, E. (author), Kapteijn, F. (author), Kooyman, P.J. (author)
To prevent sintering, ozone treatment at mild temperature is used to remove the capping agent from supported Au nanoparticles. The Au nanoparticles are first synthesized as a colloidal solution and then supported on alumina. Fourier Transform Infra Red (FTIR) shows the capping agent is removed completely. Transmission Electron Microscopy (TEM...
journal article 2016
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Bremmer, G.M. (author), Van Haandel, Lennart (author), Hensen, Emiel J M (author), Frenken, Joost W M (author), Kooyman, P.J. (author)
The effect of exposure to ambient air of MoS<sub>2</sub>-based, γ-Al<sub>2</sub>O<sub>3</sub>-supported, hydrodesulfurization (HDS) catalysts has been studied using high-resolution transmission electron microscopy (HRTEM). Analysis of unpromoted as well as Ni- and Co-promoted MoS<sub>2</sub> samples showed that the number of MoS<sub>2</sub>...
journal article 2016
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Berger, M (author), Kooyman, P.J. (author), Makkee, M. (author), van der Zee, J.S. (author), Sterk, P. J. (author), van Dijk, J. (author), Kemper, E. M. (author)
Background: Clinical studies investigating medicinal products need to comply with laws concerning good clinical practice (GCP) and good manufacturing practice (GMP) to guarantee the quality and safety of the product, to protect the health of the participating individual and to assure proper performance of the study. However, there are no...
journal article 2016
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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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Van Driel, B.A. (author), Kooyman, P.J. (author), van den Berg, K.J. (author), Schmidt-Ott, A. (author), Dik, J. (author)
Titanium dioxide is the most abundantly used white pigment of the 20th century. The pigment is still in use, both in the production of contemporary art and for the conservation of older artwork as a retouching pigment. Unfortunately, next to its positive characteristics, the pigment has one major potential drawback: its photocatalytic activity...
journal article 2015
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Skupien, E. (author), Berger, R.J. (author), Santos, V.P. (author), Gascon, J. (author), Makkee, M. (author), Kreutzer, M.T. (author), Kooyman, P.J. (author), Moulijn, J.A. (author), Kapteijn, F. (author)
Benzyl alcohol oxidation was carried out in toluene as solvent, in the presence of the potentially inhibiting oxidation products benzaldehyde and benzoic acid. Benzoic acid, or a product of benzoic acid, is identified to be the inhibiting species. The presence of a basic potassium salt (K2CO3 or KF) suppresses this inhibition, but promotes the...
journal article 2014
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Puspitasari, I. (author), Saputra, P. (author), Morana, B. (author), Mele, L. (author), Santagata, F. (author), Creemer, J.F. (author), Kapteijn, F. (author), Kooyman, P.J. (author)
journal article 2012
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Vendelbo, S.B. (author), Creemer, J.F. (author), Helveg, S. (author), Morana, B. (author), Mele, L. (author), Molenbroek, A.M. (author), Sarro, P.M. (author), Zandbergen, H.W. (author), Kooyman, P.J. (author)
Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.
journal article 2011
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Kooyman, P.J. (author)
journal article 2011
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Kooyman, P.J. (author)
doctoral thesis 1993
Searched for: author:"Kooyman, P.J."
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