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Photocharged BiVO4 photoanodes for improved solar water splitting

Trze?niewski, B.J. (author), Smith, W.A. (author)

Bismuth vanadate (BiVO4) is a promising semiconductor material for the production of solar fuels via photoelectrochemical water splitting, however, it suffers from substantial recombination losses that limit its performance to well below its theoretical maximum. Here we demonstrate for the first time that the photoelectrochemical (PEC)...

journal article 2015

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Controlled release from protein particles encapsulated by molecular layer deposition

Vasudevan, S.A. (author), Xu, Y. (author), Karwal, S. (author), Van Ostaay, H.G.M.E. (author), Meesters, G.M.H. (author), Talebi, M. (author), Sudhölter, E.J.R. (author), Van Ommen, J.R. (author)

Molecular layer deposition (MLD) was used to coat micron-sized protein particles in a fluidized bed reactor. Our results show that the dissolution rate of particles coated via MLD rapidly decreases with the increase in number of coating cycles, while the uncoated particles dissolve instantaneously.

journal article 2015

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A sustainable future for photonic colloidal nanocrystals

Grim, J.Q. (author), Manna, L. (author), Moreels, I. (author)

Colloidal nanocrystals – produced in a growing variety of shapes, sizes and compositions – are rapidly developing into a new generation of photonic materials, spanning light emitting as well as energy harvesting applications. Precise tailoring of their optoelectronic properties enables them to satisfy disparate application specific requirements....

journal article 2015

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Synthesis of highly dispersed Pd nanoparticles supported on multi-walled carbon nanotubes and their excellent catalytic performance for oxidation of benzyl alcohol

Shinde, V.M. (author), Skupien, E. (author), Makkee, M. (author)

Narrow sized and highly homogeneous dispersed Pd nanoparticles have been synthesized on nitric acid-functionalized multi-walled carbon nanotubes (CNTs) without a capping agent. The TEM images show that the extremely small Pd nanoparticles with an average size of about 1.5 nm were homogeneously dispersed on the surface of the CNTs. The...

journal article 2015

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Facile formation of ZIF-8 thin films on ZnO nanorods

Al-Kutubi, H. (author), Dikhtiarenko, A. (author), Zafarani, H.R. (author), Sudhölter, E.J.R. (author), Gascon, J. (author), Rassaei, L. (author)

In this work, thin films of the well-known metal–organic framework ZIF-8 were formed on zinc oxide nanorods through the reaction with 2-methyl-imidazole solution (Hmim). Deposition of a thin film of the linker solution allows the underlying zinc oxide nanorod morphology to be preserved, resulting in the facile and precise formation of...

journal article 2015

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Protein dynamics: From rattling in a cage to structural relaxation

Khodadadia, S. (author), Sokolov, A.P. (author)

We present an overview of protein dynamics based mostly on results of neutron scattering, dielectric relaxation spectroscopy and molecular dynamics simulations. We identify several major classes of protein motions on the time scale from faster than picoseconds to several microseconds, and discuss the coupling of these processes to solvent...

journal article 2015

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Manufacture of dense CAU-10-H coatings for application in adsorption driven heat pumps: Optimization and characterization

De Lange, M.F. (author), Zeng, T. (author), Vlugt, T.J.H. (author), Gascon, J. (author), Kapteijn, F. (author)

CAU-10-H displays a highly suitable step-wise water adsorption behaviour for application in adsorption driven heat pumps and chillers. For actual application, manufacturing of coatings of this material on thermally conductive surfaces is highly desired. Direct, single-step, crystallization of CAU-10-H on either metallic or anodized aluminium...

journal article 2015

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A low cost azomethine-based hole transporting material for perovskite photovoltaics

Petrus, M.L. (author), Bein, T. (author), Dingemans, T.J. (author), Docampo, P. (author)

Most hole transporting materials (HTMs) prepared for perovskite solar cell applications are synthesized via cross-coupling reactions that require expensive transition metal catalysts, inert reaction conditions and extensive product purification; making large-scale production cost-prohibitive. Here, we describe the synthesis of a simple...

journal article 2015

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Raman Study of Laser Induced Heating Effects in Free-Standing Silicon Nanocrystals

Han, L. (author), Zeman, M. (author), Smets, A.H.M. (author)

This paper demonstrates that free-standing silicon nanocrystals (Si NCs) have significantly different thermal conductivity properties compared to Si NCs embedded in a host matrix. The temperatures of Si NCs under laser illumination have been determined by measuring the ratio of the Anti-Stokes to Stokes intensities of the first order Si–Si...

journal article 2015

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Metal–organic framework based mixed matrix membranes: A solution for highly efficient CO2 capture?

Seoane, B. (author), Coronas, J. (author), Gascon, I. (author), Benavides, M.E. (author), Karvan, O. (author), Caro, J. (author), Kapteijn, F. (author), Gascon, J. (author)

The field of metal–organic framework based mixed matrix membranes (M4s) is critically reviewed, with special emphasis on their application in CO2 capture during energy generation. After introducing the most relevant parameters affecting membrane performance, we define targets in terms of selectivity and productivity based on existing literature...

journal article 2015

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High efficiency, fully inkjet printed organic solar cells with freedom of design

Eggenhuisen, T.M. (author), Galagan, Y. (author), Biezemans, A.F.K.V. (author), Slaats, T.M.W.L. (author), Voorthuijzen, W.P. (author), Kommeren, S. (author), Shanmugam, S. (author), Teunissen, J.P. (author), Hadipour, A. (author), Verhees, W.J.H. (author), Veenstra, S.C. (author), Coenen, M.J.J. (author), Gilot, J. (author), Andriessen, R. (author), Groen, W.A. (author)

The organic photovoltaics field is maturing and reaching a technology readiness level where the focus is on developing large scale fabrication methods. In this light, fully inkjet printed organic solar cells were demonstrated. Inkjet printing allows direct patterning of all the layers, including the electrodes, offering full freedom of design...

journal article 2015

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Bicontinuous microemulsions for high yield, wet synthesis of ultrafine nanoparticles: A general approach

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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Calculating the volume of elongated bubbles and droplets in microchannels from a top view image

Musterd, M. (author), Van Steijn, V. (author), Kleijn, C.R. (author), Kreutzer, M.T. (author)

We present a theoretical model to calculate the volume of non-wetting bubbles and droplets in segmented microflows from given dimensions of the microchannel and measured lengths of bubbles and droplets. Despite the importance of these volumes in interpreting experiments on reaction kinetics and transport phenomena, an accurate model like the one...

journal article 2015

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Specific oxyfunctionalisations catalysed by peroxygenases: Opportunities, challenges and solutions

Bormann, S. (author), Gomez Baraibar, A. (author), Ni, Y. (author), Holtmann, D. (author), Hollmann, F. (author)

Peroxygenases enable H2O2-driven oxyfunctionalisation of organic compounds such as selective epoxidation, hydroxylation and heteroatom oxygenation. Therefore, peroxygenases are potentially very useful tools for the organic chemist. This contribution reviews the current state of the art in peroxygenases, their availability, engineering and...

journal article 2015

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Metal organic framework synthesis in the presence of surfactants: Towards hierarchical MOFs?

Seoane, B. (author), Dikhtiarenko, A. (author), Mayoral, A. (author), Tellez, C. (author), Coronas, J. (author), Kapteijn, F. (author), Gascon, J. (author)

The effect of synthesis pH and H2O/EtOH molar ratio on the textural properties of different aluminium trimesate metal organic frameworks (MOFs) prepared in the presence of the well-known cationic surfactant cetyltrimethylammonium bromide (CTAB) at 120 °C was studied with the purpose of obtaining a MOF with hierarchical pore structure. Depending...

journal article 2015

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Heat-induced transformation of CdSe–CdS–ZnS core–multishell quantum dots by Zn diffusion into inner layers

Yalcin, A.O. (author), Goris, B. (author), Van Dijk-Moes, R.J.A. (author), Fan, Z. (author), Erdamar, A.K. (author), Tichelaar, F.D. (author), Vlugt, T.J.H. (author), Van Tendeloo, G. (author), Bals, S. (author), Vanmaekelbergh, D. (author), Zandbergen, H.W. (author), Van Huis, M.A. (author)

In this work, we investigate the thermal evolution of CdSe–CdS–ZnS core–multishell quantum dots (QDs) in situ using transmission electron microscopy (TEM). Starting at a temperature of approximately 250 °C, Zn diffusion into inner layers takes place together with simultaneous evaporation of particularly Cd and S. As a result of this...

journal article 2014

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Unexpected origin of magnetism in monoclinic Nb12O29 from first-principles calculations

Fang, C.M. (author), Van Huis, M.A. (author), Xu, Q. (author), Cava, R.J. (author), Zandbergen, H.W. (author)

Nb12O29 is a 4d transition metal oxide that occurs in two forms with different symmetries, monoclinic (m) and orthorhombic (o). The monoclinic form has unusual magnetic properties; below a temperature of 12 K, it exhibits both metallic conductivity and antiferromagnetic ordering. Here, first-principles density-functional theory calculations are...

journal article 2014

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Experimental and molecular dynamics characterization of dense microemulsion systems: Morphology, conductivity and SAXS

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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The selective addition of water

Resch, V. (author), Hanefeld, U. (author)

Water is omnipresent and essential. Yet at the same time it is a rather unreactive molecule. The direct addition of water to C[double bond, length as m-dash]C double bonds is therefore a challenge not answered convincingly. In this perspective we critically evaluate the selectivity and the applicability of the different catalytic approaches for...

journal article 2014

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High yield, controlled synthesis of graphitic networks from dense micro emulsions

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