A5019318669- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Electron Microscopy Techniques and Applications
- Catalytic Processes in Materials Science
- Electron and X-Ray Spectroscopy Techniques
- Quantum Dots Synthesis And Properties
- Plasmonic and Surface Plasmon Research
- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- Pickering emulsions and particle stabilization
- Semiconductor materials and devices
- Nanocluster Synthesis and Applications
- Electrocatalysts for Energy Conversion
- Characterization and Applications of Magnetic Nanoparticles
- Catalysis and Oxidation Reactions
- Surfactants and Colloidal Systems
- Extracellular vesicles in disease
- Microbial Fuel Cells and Bioremediation
- Microbial Metabolic Engineering and Bioproduction
- Electronic and Structural Properties of Oxides
- Electrostatics and Colloid Interactions
- Electrochemical Analysis and Applications
- Zeolite Catalysis and Synthesis
- 2D Materials and Applications
- Polyoxometalates: Synthesis and Applications
- Sulfur-Based Synthesis Techniques
University of Antwerp
2016-2025
Province of Antwerp
2015
Significance This contribution reports on the application of gold nanorods to detection amyloids in Parkinson’s and prion diseases. We found that show no interaction with monomeric proteins but adsorb onto helical protein fibrils. Chiral amyloid templates induce arrangement nanorods, giving rise intense optical activity at plasmon resonance wavelengths. report shows use fibrils as for chiral nanoparticle assembly development a biodetection technique. this effect model recombinant protein,...
The catalytic performance of heterogeneous catalysts can be tuned by modulation the size and structure supported transition metals, which are typically regarded as active sites. In single-atom metal catalysts, support itself strongly affect properties. Here, we demonstrate that cerium dioxide (CeO2) governs reactivity atomically dispersed palladium (Pd) in carbon monoxide (CO) oxidation. Catalysts with small CeO2 nanocrystals (~4 nanometers) exhibit unusually high activity a CO-rich reaction...
Abstract Filamentous cable bacteria display long-range electron transport, generating electrical currents over centimeter distances through a highly ordered network of fibers embedded in their cell envelope. The conductivity these periplasmic wires is exceptionally high for biological material, but chemical structure and underlying transport mechanism remain unresolved. Here, we combine high-resolution microscopy, spectroscopy, imaging on individual bacterium filaments to demonstrate that...
A limiting factor of solvent-induced nanoparticle self-assembly is the need for constant sample dilution in assembly/disassembly cycles. Changes concentration alter kinetics subsequent assembly process, optical signal recovery. Herein, we show that upon confining hydrophobic nanoparticles permeable silica nanocapsules, number participating cyclic aggregation remains despite bulk changes solution, leading to highly reproducible plasmon band shifts at different solvent compositions.
The spontaneous formation of a Janus polymer shell is clearly demonstrated by electron tomography and NOESY-NMR.
A palladium based catalytic system was developed to decarboxylate glutamic acid and pyroglutamic bio-based 2-pyrrolidone in aqueous media at 250 °C under an inert atmosphere.
The major mechanism responsible for plasmonic enhancement of titanium dioxide photocatalysis using gold nanoparticles is still under contention. This work introduces an experimental strategy to disentangle the significance charge transfer and near-field mechanisms in photocatalysis. By controlling thickness conductive nature a nanoparticle shell that acts as spacer layer separating metal core from TiO2 surface, field or effects can be selectively repressed evoked. Layer-by-layer situ...
Abstract In the last decade, extracellular vesicles (EVs) have become a hot topic. The findings on EVs content and effects made them major field of interest in cancer research. EVs, are able to be internalized through integrins expressed parental cells, tissue specific manner, as key step progression pre-metastatic niche formation. However, this specificity might lead new opportunities treatment by using devices for drug delivery. For future applications cancer, improved protocols methods...
Direct hydroxylation via the functionalization of tertiary benzylic C(sp3)–H bonds is great significance for obtaining alcohols, which find wide applications in pharmaceuticals as well fine chemical industries. However, current synthetic procedures use toxic reagents, and therefore, development a sustainable strategy synthesis alcohols highly desirable. To solve this problem, herein, we report metal-free heterogeneous photocatalyst to synthesize hydroxylated products using oxygen key...
Chirality in inorganic nanoparticles and nanostructures has gained increasing scientific interest, because of the possibility to tune their ability interact differently with left- right-handed circularly polarized light. In some cases, optical activity is hypothesized originate from a chiral morphology nanomaterial. However, quantifying degree chirality objects sizes tens nanometers far straightforward. Electron tomography offers faithfully retrieve three-dimensional nanomaterials, but only...
Molybdenum ditelluride (MoTe2) nanosheets have displayed intriguing physicochemical properties and opto-electric characteristics as a result of their tunable small band gap (Eg ∼ 1 eV), facilitating concurrent electron hole transport. Despite the numerous efforts devoted to development p-type MoTe2 field-effect transistors (FETs), presence tellurium (Te) point vacancies has caused serious reliability issues. Here, we overcome this major limitation by treating surface with thiolated molecules...
Porous nanomaterials find wide-ranging applications in modern medicine, optoelectronics, and catalysis, playing a key role today's effort to build an electrified, sustainable future. Accurate situ quantification of their structural surface properties is required model performance improve design. In this article, we demonstrate how assess the porosity, area utilization nanoporous soft-landed copper oxide catalyst layer/carbon interface, which otherwise difficult resolve using physisorption or...
Immune checkpoint blockade involves targeting immune regulatory molecules with antibodies. Preclinically, complex multiantibody regimes of both inhibitory and stimulatory targets are a promising candidate for the next generation immunotherapy. However, in this setting, antibody platform may be limited due to excessive toxicity caused by off target effects as result systemic administration. RNA can used an alternate antibodies it downregulate immunosuppressive checkpoints (siRNA) or induce...
Silver nanoparticles are widely used in the field of plasmonics because their unique optical properties. The wavelength-dependent surface plasmon resonance gives rise to a strongly enhanced electromagnetic field, especially at so-called hot spots located nanogap in-between metal nanoparticle assemblies. Therefore, interparticle distance is decisive factor plasmonic applications, such as surface-enhanced Raman spectroscopy (SERS). In this study, aim engineer for silver nanospheres using...
In this study, we applied cluster beam deposition (CBD) as a new approach for fabricating efficient plasmon-based photocatalytic materials. Au nanoclusters (AuNCs) produced in the gas phase were deposited on TiO2 P25-coated silicon wafers with coverage ranging from 2 to 8 atomic monolayer (ML) equivalents. Scanning Electron Microscopy (SEM) images of AuNCs modified P25 films show that surface is uniformly covered by remain isolated at low (2 ML, 4 ML) and aggregate higher (8 ML). A clear...
Abstract A limiting factor of solvent‐induced nanoparticle self‐assembly is the need for constant sample dilution in assembly/disassembly cycles. Changes concentration alter kinetics subsequent assembly process, optical signal recovery. Herein, we show that upon confining hydrophobic nanoparticles permeable silica nanocapsules, number participating cyclic aggregation remains despite bulk changes solution, leading to highly reproducible plasmon band shifts at different solvent compositions.
Morphological characterization of nanoparticle assemblies and hybrid nanomaterials is critical in determining their structure-property relationships as well the development structures with desired properties. Electron tomography has become a widely utilized technique for three-dimensional assemblies. However, extraction quantitative morphological parameters from reconstructed volume can be complex labor-intensive task. In this study, we aim to overcome challenge by automating volumetric...
Clay minerals are abundant natural materials arising in the presence of water and composed small particles different sizes shapes. The interlamellar space between layered silicate clays can also be used to host a variety organic inorganic guest molecules or particles. Recent studies clay–metal hybrids formed by impregnation nanoparticles into interlayer spaces have not demonstrated ability for templated growth following shape Following this line interest, method synthesis gold on synthetic...
Using electron microscopy, polymer encapsulated silver nanoparticles were visualized and their coverage, molecular structure plasmonic properties could be investigated.
Cryogenic electron microscopy can provide high-resolution reconstructions of macromolecules embedded in a thin layer ice from which atomic models be built de novo. However, the interaction between ionizing beam and sample results beam-induced motion image distortion, limit attainable resolutions. Sample charging is one contributing factor motions distortions, normally alleviated by including part supporting conducting film within beam-exposed region. routine data collection schemes avoid...
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