Searched for: author%3A%22Van+Ommen%2C+J.R.%22
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Benz, D. (author), Bui, Hao Van (author), Hintzen, H.T.J.M. (author), Kreutzer, M.T. (author), van Ommen, J.R. (author)
Photocatalysts for water purification typically lack efficiency for practical applications. Here we present a multi-component (Pt:SiO<sub>2</sub>:TiO<sub>2</sub> (P25)) material that was designed using knowledge of reaction mechanisms of mono-modified catalysts (SiO<sub>2</sub>:TiO<sub>2</sub>, and Pt:TiO<sub>2</sub> ) combined with the...
journal article 2020
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Guo, J. (author), Bui, H.V. (author), Valdesueiro Gonzalez, D. (author), Yuan, Shaojun (author), Liang, Bin (author), van Ommen, J.R. (author)
This work investigated the suppression of photocatalytic activity of titanium dioxide (TiO2) pigment powders by extremely thin aluminum oxide (Al2O3) films deposited via an atomic-layer-deposition-type process using trimethylaluminum (TMA) and H2O as precursors. The deposition was performed on multiple grams of TiO2 powder at room temperature...
journal article 2018
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Bui, H.V. (author), Grillo, F. (author), Kulkarni, S.S. (author), Bevaart, Ronald (author), Nguyên, V.T. (author), van der Linden, B. (author), Moulijn, J.A. (author), Makkee, M. (author), Kreutzer, M.T. (author), van Ommen, J.R. (author)
We tailored the size distribution of Pt nanoparticles (NPs) on graphene nanoplatelets at a given metal loading by using low-temperature atomic layer deposition carried out in a fluidized bed reactor operated at atmospheric pressure. The Pt NPs deposited at low temperature (100 °C) after 10 cycles were more active and stable towards the...
journal article 2017
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Grillo, F. (author), Bui, H.V. (author), Moulijn, J.A. (author), Kreutzer, M.T. (author), van Ommen, J.R. (author)
We present an atomistic understanding of the evolution of the size distribution with temperature and number of cycles in atomic layer deposition (ALD) of Pt nanoparticles (NPs). Atomistic modeling of our experiments teaches us that the NPs grow mostly via NP diffusion and coalescence rather than through single-atom processes such as precursor...
journal article 2017
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Mirvakili, Mehr Negar (author), Bui, H.V. (author), van Ommen, J.R. (author), Hatzikiriakos, Savvas G. (author), Englezos, Peter (author)
Surface modification of cellulosic paper is demonstrated by employing plasma assisted atomic layer deposition. Al<sub>2</sub>O<sub>3</sub> thin films are deposited on paper substrates, prepared with different fiber sizes, to improve their barrier properties. Thus, a hydrophobic paper is created with low gas permeability by combining the...
journal article 2016
Searched for: author%3A%22Van+Ommen%2C+J.R.%22
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