A5049366900- Membrane Separation and Gas Transport
- Mesoporous Materials and Catalysis
- Electronic and Structural Properties of Oxides
- Ferroelectric and Piezoelectric Materials
- Nanofabrication and Lithography Techniques
- Catalytic Processes in Materials Science
- Advancements in Battery Materials
- Advancements in Solid Oxide Fuel Cells
- ZnO doping and properties
- Zeolite Catalysis and Synthesis
- Catalysis and Oxidation Reactions
- Magnetic and transport properties of perovskites and related materials
- Supercapacitor Materials and Fabrication
- Semiconductor materials and devices
- Crystallization and Solubility Studies
- Silicone and Siloxane Chemistry
- Advanced Photocatalysis Techniques
- Fuel Cells and Related Materials
- Advanced Sensor and Energy Harvesting Materials
- Acoustic Wave Resonator Technologies
- Chemical Synthesis and Characterization
- Advanced Condensed Matter Physics
- X-ray Diffraction in Crystallography
- Advanced Battery Materials and Technologies
- Anodic Oxide Films and Nanostructures
University of Twente
2016-2025
Institute of Nanotechnology
2010-2021
Institute of Inorganic Chemistry of the Slovak Academy of Sciences
2010-2019
Hong Kong Polytechnic University
2017
University of Amsterdam
2009-2010
University of Bristol
2010
Utrecht University
2009
Aquamarijn (Netherlands)
2004
Philips (Netherlands)
2000
Inkjet printing is considered as a promising technique for flexible electronics fabrication owing to its simple, versatile, environmental-friendly and low-cost features. The key inkjet ink formulation. In this work highly concentrated containing two-dimensional δ-MnO2 nanosheets with an average lateral size of 89 nm around 1 thickness was used. By engineering the formulation ink, it could be printed on O2 plasma treated glass polyimide film substrates form patterns without undesired...
The developments and state of the art in research on two‐dimensional nanosheets derived from layered metal oxides hydroxides are reviewed this paper, with emphasis their promising applications various new energy technologies, i.e., as supercapacitor electrodes, lithium ion battery solar cell components, photocatalysts, functional elements fuel cells piezoelectric harvesters. Nanosheets defined by molecular thickness large lateral dimensions, which typically differ 2–5 orders magnitude. They...
The intermittent nature of solar radiation for driven applications providing the vast opportunity phase change materials(PCMs) to reduce gap between supply and demand energy. Nevertheless, widespread utilization PCMs is limited due flow liquid during melting, separation, supercooling low heat transfer rate. ongoing progression research in this field reveals that there a high shape stabilized (SSPCMs) with energy storage capacity fast charging discharging rates. Here, we demonstrated facile...
Electrical conductivity relaxation experiments were performed on thin specimens of (x = 0.1, 0.4) at oxygen partial pressures in the temperature range 923 to 1223 K. The transient response electrical after a sudden change ambient pressure was analyzed frequency domain. latter procedure allowed diffusion‐limited and surface exchange‐limited kinetics re‐equilibration be distinguished. with thicknesses 350 460 μm indicated diffusion‐controlled . chemical diffusion coefficients, , found...
Abstract Leaching of palladium species from Pd nanoparticles under CC coupling conditions was observed for both Heck and Suzuki reactions by using a special membrane reactor. The allows the passage atoms ions, but not larger than 5 nm. Three possible mechanistic scenarios leaching were investigated with aim identifying true catalytic species. Firstly, we examined whether or palladium(0) could leach clusters non‐oxidising conditions. By our reactor, proved that this indeed happens. We then...
A simple experiment based on exclusion of Pd nanoclusters was used to identify the true catalytic species in cluster-catalyzed Heck cross-couplings. special reactor which two compartments are separated by a nanoporous membrane that allows passage atoms and ions but not (see picture). The results show real catalysts coupling n-butyl acrylate with iodobenzene leached from nanoclusters.
A highly hydrothermally stable microporous network material has been developed that can be applied in energy-efficient molecular sieving. The was synthesized by employing organically bridged monomers acid-catalysed sol–gel hydrolysis and condensation, is composed of covalently bonded organic inorganic moieties. Due to its hybrid nature, it withstands higher temperatures than polymers exhibits high solvolytical acid stability. thin film membrane prepared with the found dehydration n-butanol...
Abstract Hybrid organically linked silica is a highly promising class of materials for the application in energy‐efficient molecular separation membranes. Its high stability allows operation under aggressive working conditions. Herein reported tailoring performance these hybrid membranes by adjusting size, flexibility, shape, and electronic structure organic bridging group. A single generic procedure applied to synthesize nanoporous from bridged silsesquioxane precursors with different...
Ein einfaches Experiment, das auf dem physikalischen Ausschluss von Pd-Nanoclustern beruht, identifizierte die katalytisch aktiven Spezies in der clusterkatalysierten Heck-Kreuzkupplung. spezieller Zweikammerreaktor wurde verwendet, dessen Membran Pd-Atome durchlässt und Pd-Nanocluster zurückhält (siehe Schema). Den Ergebnissen zufolge sind aus den ausgelaugte Katalysatoren gezeigten Heck-Kupplung.
Unprecedented hydrothermal stability in functional membranes has been obtained with hybrid organic-inorganic nanoporous materials, enabling long-term application energy-efficient molecular separation, including dehydration up to at least 150 degrees C.
Printed flexible energy storage devices such as micro-supercapacitors require high electrochemical performance for practical applications. Here, we report a volumetric density of up to 1.13 × 10−3 Wh cm−3 at power 0.11 W by inkjet printing Fe-doped MnO2 nanosheets inks active materials on polyimide substrates. The enhancement results from atomic-level substitutional doping 3d metal ions (Co, Fe, Ni) in sub-nanometer thick 2D nanosheets. Substitutional introduces new electronic states near...
Abstract Fast charging is one of the key requirements for next‐generation lithium‐ion batteries, however, diffusion rates typical electrode materials are limited. Nanosizing active material a common strategy to increase effective transport rate, but it also decreases volumetric energy/power density and stability battery. In this work, nickel niobate NiNb 2 O 6 demonstrated first time as new intrinsic high‐rate anode batteries without requirement realizing nano‐architectures. The host crystal...
Wadsley-Roth phase titanium niobium oxides have received considerable interest as anodes for lithium ion batteries. However, the volume expansion and sluggish ion/electron transport kinetics retard its application in grid scale. Here, fast durable storage entropy-stabilized Fe0.4 Ti1.6 Nb10 O28.8 (FTNO) is enabled by tuning entropy via Fe substitution. By increasing entropy, a reduction of calcination temperature to form pure material achieved, leading reduced grain size and, therefore,...
Currently, the main drawback of ceramic scaffolds used in hard tissue regeneration is their low mechanical strength. Stabilized zirconia, especially tetragonal 3% yttrium-stabilized zirconia (YSZ) phase, has been considered as a bioinert material with high In present work, flexible nanofibrous YSZ were prepared by electrospinning. The obtained showed remarkable flexibility at macroscopic scale, while retaining stiffness microscopic scale. surface nanoroughness could be tailored varying heat...