Searched for: subject%3A%22Titanium%22
(1 - 20 of 29)

Pages

document
Bruggeman, D.F. (author), Mathew, S. (author), Detz, R.J. (author), Reek, J.N.H. (author)
This study examines two strategies—homo- and heterogeneous approaches for the light-driven oxidation of benzyl alcohol in dye-sensitised photoelectrochemical cells (DSPECs). The DSPEC consists of a mesoporous anatase TiO2 film on FTO (fluorine-doped tin oxide), sensitised with the thienopyrroledione-based dye AP11 as the photoanode and an FTO–Pt...
article 2021
document
Bracesco, A.E.A. (author), Burgess, C.H. (author), Todinova, A. (author), Zardetto, V. (author), Koushik, D. (author), Kessels, M.M. (author), Dogan, I. (author), Weijtens, C.H.L. (author), Veenstra, S. (author), Andriessen, R. (author), Creatore, M. (author)
The chemistry of the interface between the metal halide perovskite absorber and the charge transport layer affects the performance and stability of metal halide perovskite solar cells (PSCs). The literature provides several examples of poor PSC conversion efficiency values, when electron transport layers (ETLs), such as SnO2 and TiO2, are...
article 2020
document
Grillo, F. (author), Soethoudt, J. (author), Marques, E.A. (author), de Martin, L. (author), van Dongen, K. (author), van Ommen, J.R. (author), Delabie, A. (author)
article 2020
document
Peters, R.J.B. (author), Oomen, A.G. (author), van Bemmel, G. (author), van Vliet, L. (author), Undas, A.K. (author), Munniks, S. (author), Bleys, R.L.A.W. (author), Tromp, P.C. (author), Brand, W. (author), van der Lee, M. (author)
Silicon dioxide (silica, SiO2, SAS) and titanium dioxide (TiO2) are produced in high volumes and applied in many consumer and food products. As a consequence, there is a potential human exposure and subsequent systemic uptake of these particles. In this study we show the characterization and quantification of both total silicon (Si) and titanium...
article 2020
document
Kroll, J.G. (author), Borsoi, F. (author), van der Enden, K.L. (author), Uilhoorn, W. (author), de Jong, D. (author), Quintero-Perez, M. (author), van Woerkom, D.J. (author), Bruno, A. (author), Plissard, S.R. (author), Car, D. (author), Bakkers, E.P.A.M. (author), Cassidy, M.C. (author), Kouwenhoven, L.P. (author)
Superconducting coplanar-waveguide resonators that can operate in strong magnetic fields are important tools for a variety of high-frequency superconducting devices. Magnetic fields degrade resonator performance by creating Abrikosov vortices that cause resistive losses and frequency fluctuations or suppress the superconductivity entirely. To...
article 2019
document
Koivisto, A.J. (author), Kling, K.I. (author), Fonseca, A.S. (author), Brostrøm Bluhme, A. (author), Moreman, M. (author), Yu, M. (author), Costa, A.L. (author), Giovanni, B. (author), Ortelli, S. (author), Fransman, W. (author), Vogel, U. (author), Jensen, K.A. (author)
Nanoscale TiO2 (nTiO2) is manufactured in high volumes and is of potential concern in occupational health. Here, we measured workers exposure levels while ceramic honeycombs were dip coated with liquid photoactive nanoparticle suspension and dried with an air blade. The measured nTiO2 concentration levels were used to assess process specific...
article 2018
document
Fonseca, A.S. (author), Kuijpers, E. (author), Kling, K.I. (author), Levin, M. (author), Koivisto, A.J. (author), Nielsen, S.H. (author), Fransman, W. (author), Fedutik, Y. (author), Jensen, K.A. (author), Koponen, I.K. (author)
Fume hoods are one of the most common types of equipment applied to reduce the potential of particle exposure in laboratory environments. A number of previous studies have shown particle release during work with nanomaterials under fume hoods. Here, we assessed laboratory workers’ inhalation exposure during synthesis and handling of CuO, TiO2...
article 2018
document
Heringa, M.B. (author), Peters, R.J.B. (author), Bleys, R.L.A.W. (author), van der Lee, M.K. (author), Tromp, P.C. (author), van Kesteren, P.C.E. (author), van Eijkeren, J.C.H. (author), Undas, A.K. (author), Oomen, A.G. (author), Bouwmeester, H. (author)
Background: Titanium dioxide (TiO2) is produced at high volumes and applied in many consumer and food products. Recent toxicokinetic modelling indicated the potential of TiO2 to accumulate in human liver and spleen upon daily oral exposure, which is not routinely investigated in chronic animal studies. A health risk from nanosized TiO2 particle...
article 2018
document
Moitzheim, S. (author), Balder, J.E. (author), Poodt, P. (author), Unnikrishnan, S. (author), de Gendt, S. (author), Vereecken, P.M. (author)
Titania (TiO2) offers a high theoretical capacity of 336 mAh g-1 with the insertion of one Li per Ti unit. Unfortunately, the poor ionic and electronic conductivity of bulk TiO2 electrodes limits its practical implementation. Nanosizing titania below ∼20 nm has shown to increase the rate performance and accessible capacity but still not more...
article 2017
document
Feleki, B. (author), Bex, G. (author), Andriessen, R. (author), Galagan, Y. (author), Di Giacomo, F. (author)
Perovskite solar cells (PSCs) have recently attracted the attention of the scientific community because of the rapid advances in their development. Most of the state-of-the-art devices contain mesoporous titanium dioxide (TiO2) as an electron transport layer. The drawback of such TiO2 layers is that it often needs high temperature sintering at...
article 2017
document
Helsper, J.P.F.G. (author), Peters, R.J.B. (author), van Bemmel, M.E.M. (author), Rivera, Z.E.H. (author), Wagner, S. (author), von der Kammer, F. (author), Tromp, P.C. (author), Hofmann, T. (author), Weigel, S. (author)
Seven commercial titanium dioxide pigments and two other well-defined TiO2 materials (TiMs) were physicochemically characterised using asymmetric flow field flow fractionation (aF4) for separation, various techniques to determine size distribution and inductively coupled plasma mass spectrometry (ICPMS) for chemical characterization. The aF4...
article 2016
document
Ding, Y. (author), Stahlmecke, B. (author), Jiménez, A.S. (author), Tuinman, I.L. (author), Kaminski, H. (author), Kuhlbusch, T.A.J. (author), van Tongeren, M. (author), Riediker, M. (author)
Different types of aerosolization and deagglomeration testing systems exist for studying the properties of nanomaterial powders and their aerosols. However, results are dependent on the specific methods used. In order to have well-characterized aerosols, we require a better understanding of how system parameters and testing conditions influence...
article 2015
document
Fossdal, A. (author), Darell, O. (author), Lambert, A. (author), Schols, E. (author), Comte, E. (author), Leenman, R.N. (author), Blom, R. (author)
Dimensional and phase changes of four candidate oxygen carrier materials for chemical looping combustion are investigated by dilatometry and high-temperature X-ray diffraction during four redox cycles. NiO/Ni2AlO4 does not exhibit significant dimensional changes during cycling, and it is shown that the support material also contributes to the...
article 2015
document
Kouters, M.H.M. (author), Slot, H.M. (author), van Zwieten, W. (author), van der Veer, J. (author)
Hydrogen is used as a process gas in vacuum environments for semiconductor manufacturing equipment. If hydrogen dissolves in metallic components during operation it can result in hydrogen embrittlement. In order to assess if hydrogen embrittlement occurs in such a vacuum environment a special fatigue test has been developed. Accelerated life...
article 2014
document
Peters, R.J.B. (author), van Bemmel, G. (author), Herrera-Rivera, Z. (author), Helsper, H.P.F.G. (author), Marvin, H.J.P. (author), Weigel, S. (author), Tromp, P.C. (author), Oomen, A.G. (author), Rietveld, A.G. (author), Bouwmeester, H. (author)
Titanium dioxide (TiO2) is a common food additive used to enhance the white color, brightness, and sometimes flavor of a variety of food products. In this study 7 food grade TiO2 materials (E171), 24 food products, and 3 personal care products were investigated for their TiO 2 content and the number-based size distribution of TiO2 particles...
article 2014
document
George, A. (author), Stawski, T.M. (author), Unnikrishnan, S. (author), Veldhuis, S.A. (author), ten Elshof, J.E. (author)
A simple and cost effective methodology for large area micro and nanopatterning of a wide range of functional materials on flexible substrates is presented. A hydrophobic-hydrophilic chemical contrast was patterned on surfaces of various flexible plastic substrates using molds and shadow masks with which selected areas of the substrate surface...
article 2012
document
Rooms, H.C.A. (author), Barbu, I. (author), Vroon, Z.A.E.P. (author), Meertens, R. (author), Vermeulen, B. (author)
The acceptance of solar cells in the built environment is partly dependent on the appearance of the solar modules. One aspect in the appearance is color. In most cases a solar cell itself reflects either blue or no color and will appear blackish. For the blue solar cells it is possible to tune the antireflection layer in such a way that a...
conference paper 2011
document
Römer, G.W. (author), Del Cerro, D.A. (author), Sipkema, R.C.J. (author), Groenendijk, M.N.W. (author), Huis in 't Veld, A.J. (author), TNO Industrie en Techniek (author)
By laser ablation with ultra short laser pulses in the pico- and femto-second range, well controlled dual scaled micro- and nano-scaled surface textures can be obtained. The micro-scale of the texture is mainly determined by the dimensions of the laser spot, whereas the superimposed nano-structure is the result of so-called laser induced "self...
conference paper 2009
document
van Deelen, J. (author), van Mol, A.M.B. (author), Poodt, P.W.G. (author), Grob, F. (author), Spee, C.I.M.A. (author), TNO Industrie en Techniek (author)
For the past decade TNO has been involved in the research and development of atmospheric pressure CVD (APCVD) and plasma enhanced CVD (PECVD) processes for deposition of transparent conductive oxides (TCO), such as tin oxide and zinc oxide. The use of atmospheric deposition processes allows for large scale roll to roll manufacturing, and is...
conference paper 2009
document
Urbanus, J. (author), Roelands, C.P.M. (author), ter Horst, J.H. (author), Verdoes, D. (author), Jansens, P.J. (author), TNO Industrie (author)
In Situ Product Recovery (ISPR) applied in fermentation processes leads to improved yield and productivity of these processes. In principle, ISPR can be achieved using Template Induced Crystallization (TIC), which is one possible ISPR technique. With TIC, templates are added to the solution as a specific surface upon which the solute preferably...
article 2008
Searched for: subject%3A%22Titanium%22
(1 - 20 of 29)

Pages