A5067037158- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Conducting polymers and applications
- Electrocatalysts for Energy Conversion
- Electrochemical sensors and biosensors
- Nonlinear Optical Materials Studies
- Photochromic and Fluorescence Chemistry
- Advanced Polymer Synthesis and Characterization
- Gold and Silver Nanoparticles Synthesis and Applications
- Chemical and Physical Properties in Aqueous Solutions
- Concrete Corrosion and Durability
- Ionic liquids properties and applications
- Smart Materials for Construction
- Nanoporous metals and alloys
- Force Microscopy Techniques and Applications
- Advanced battery technologies research
- Advanced Chemical Sensor Technologies
- Structural Health Monitoring Techniques
- Nanomaterials for catalytic reactions
Stadtwerke Straubing (Germany)
2024
Technical University of Munich
2024
Ruhr University Bochum
2018-2022
Mahidol University
2017
The aim to produce highly active, selective, and long-lived electrocatalysts by design drives major research efforts toward gaining fundamental understanding of the relationship between material properties their catalytic performance. Surface characterization tools enable assess atomic scale information on complexity electrocatalyst materials. Advancing electrochemical methodologies adequately characterize such systems was less a focus point. In this Review, we shed light ability gain...
Abstract Nano impact electrochemistry is used to measure a transient signal while nanoparticle (NP) hits an electrode due its motion in solution. A variety of information can be obtained from this current pulse, yet accurate measurement challenging short duration (μs s) and small amplitude (≤10 nA). typically low bandwidth low‐pass filter improve the signal‐to‐noise ratio, but it may cost severely accuracy data. Here, we demonstrate effects electronic filters by using generated impulses with...
Abstract Single entity electrochemistry is employed to gain insights into ion solvation in solvent mixtures. To this end, the time required for oxidation of individual indicator nanoparticles sparingly soluble products used probe ionic diffusion, and hence new properties Herein, water‐ethanol or water‐methanol mixtures different compositions are analyzed following approach, using silver nanoparticle presence chloride iodide as a complementary reaction. For increasing concentrations bulkier...
Single particle electrochemical oxidation of polyvinylpyrrolidone-capped silver nanoparticles at a microdisk electrode is investigated as function shape (spheres, cubes, and plates) in potassium nitrate hydroxide solutions. In nitrate, extreme anodic potentials (≥1500 mV vs Ag/AgCl (3 M KCl)) are necessary to achieve oxidation, while lower required (≥900 (saturated KCl)). Upon oxide formed, readily catalyzing water producing spike-step current response. The spike duration for each used probe...
Two-photon lithography (TPL) enables the fabrication of complex 3D structures with sub-micrometer precision. Incorporation new functionalities into TPL-printed is key to advance their applications. A prevalent approach achieve this by directly adding functional nanomaterials photoresist (called "pre-doping"), which has several inherent challenges including material compatibility, light scattering, and nanoparticle agglomeration. Here, a conceptually different "post-doping" strategy proposed,...
Nanocatalyst optimisation through electrochemical dealloying has been employed as a successful strategy to increase catalytic activity, while reducing the need for precious metals. We present here new pathway influence dealloying, external homogeneous magnetic fields. A field with flux density of 450 mT in two orientations, parallel or perpendicular current direction, was used during using cyclic voltammetry AgAu nanoparticles. found increased porosity low cycle numbers and improved...
Abstract Invited for this month's cover picture is the group of Prof. Dr. Kristina Tschulik from Ruhr University Bochum (Germany). The shows alteration a current signal caused by electronic filtering implemented in potentiostats. These filter effects are uncovered and simple method provided electrochemists to test validate their experimental setup. This particularly important transient single‐entity electrochemistry, which requires low measurements at high time resolution. Read full text...
Electrochemical analysis relies on precise measurement of electrical signals, yet the distortions caused by potentiostat circuitry and filtering are rarely addressed. Elucidation these effects is essential for gaining insights behind sensitive low-current short-duration electrochemical e.g., in single-entity electrochemistry. We present a simulation approach utilizing Electrical Simulation Program with Integrated Circuit Emphasis (SPICE), which extensively used electronic circuit...
Abstract Invited for this month's cover picture is the group of Prof. Dr. Kristina Tschulik from Ruhr University Bochum (Germany). The illustrates how different solvent shells forming in water/alcohol mixtures can be probed by single particle electrochemistry thanks to resulting difference diffusion speeds solvated ions. This effect reflected time needed full oxidation a nanoparticle arriving at microelectrode, which limited halide ion transport towards under suitable conditions. Read text...