A5032021357- Electrocatalysts for Energy Conversion
- Electrochemical Analysis and Applications
- Fuel Cells and Related Materials
- Advanced battery technologies research
- Conducting polymers and applications
- Catalytic Processes in Materials Science
- Supercapacitor Materials and Fabrication
- Catalysis for Biomass Conversion
- Catalysis and Hydrodesulfurization Studies
- Nanomaterials for catalytic reactions
- Electrochemical sensors and biosensors
- Catalysis and Oxidation Reactions
- Catalysts for Methane Reforming
- Analytical Chemistry and Sensors
- Carbon Nanotubes in Composites
- Gold and Silver Nanoparticles Synthesis and Applications
- Advancements in Battery Materials
- Molecular Junctions and Nanostructures
- Machine Learning in Materials Science
- CO2 Reduction Techniques and Catalysts
- Advanced Battery Materials and Technologies
- Advanced Chemical Sensor Technologies
- Surface Chemistry and Catalysis
- Membrane-based Ion Separation Techniques
- Advanced Chemical Physics Studies
Martin Luther University Halle-Wittenberg
2015-2024
Ruhr University Bochum
2007-2024
Luther University
2017-2023
Chemnitz University of Technology
1995-2015
Boreskov Institute of Catalysis
2009
Universitat de Barcelona
2009
Institució Catalana de Recerca i Estudis Avançats
2009
Technical University of Darmstadt
2004-2009
Utrecht University
2009
Max-Planck-Institut für Nachhaltige Materialien
2009
Nitrogen-containing carbon nanotubes (NCNTs) were prepared via pyrolysis of acetonitrile over cobalt catalysts at different temperatures to control the nitrogen content. The changes in chemical and structural properties undoped CNTs NCNTs investigated using high-resolution X-ray photoelectron Raman spectroscopy. 550 °C had a higher amount pyridinic groups edge plane exposure than ones 750 °C. thermal stability transformation these functional was studied deconvoluted XP N 1s spectra. show...
PtNi nanoparticle catalysts supported on oxygen functionalized carbon nanotubes were prepared by microwave-assisted polyol reduction using two different modes of irradiation, namely, continuous or pulsed irradiation. The influence irradiation time pulse number catalyst structure and activity in methanol electrooxidation has been studied. Characterization was done with ICP-OES, XRD, TEM, XPS, XAS to determine composition, morphology, crystal structural chemical state. electrocatalytic...
Nickel(II) hydroxide is a well-known material for the oxygen evolution reaction (OER) in alkaline media, particularly when iron incorporated into its lattice. Moderate heat treatment of nickel(II) (≤700 °C) leads to formation oxide (nano)particles, which exhibit reduced OER activity higher temperature was. In this work, we report that air at even temperatures (60 min 900 results an with high superior hydroxide. Similarly, stability under electrochemical conditions increased compared...
Carbon nanotubes (CNT) supported platinum-ruthenium (Pt-Ru) catalysts were prepared by impregnation-reduction using an ethanolic solution of H2PtCl6 and RuCl3. The effect reduction temperatures on particle size, surface area their relationship to the electrocatalytic activity for methanol oxidation investigated. Thermogravimetric analysis, scanning electron microscopy, transmission X-ray diffraction (XRD) as well photoelectron spectroscopy (XPS) used catalyst characterization. XRD analysis...
Nitrogen doping of multi-walled carbon nanotubes (CNTs) was achieved by the carbonization a polyaniline (PANI) coating. First, CNTs were partially oxidized with KMnO4 to obtain oxygen-containing functional groups. Depending on loading, thin layers birnessite-type MnO2 (10 wt% and 30 wt%) obtained subsequent thermal decomposition. CNT-supported then used for oxidative polymerization aniline in acidic solution, resulting PANI-coated finally heated at 550 degrees C 850 inert gas. The samples...
Abstract Highly disperse copper nanoparticles immobilized on carbon nanomaterials (CNMs; graphene/carbon nanotubes) were prepared and used as a recyclable reusable catalyst to achieve Cu I ‐catalyzed [3+2] cycloaddition click chemistry. Carbon with N ‐heterocyclic carbene (NHC)‐Cu complexes from an imidazolium‐based show excellent stability including high efficiency at low loading. The catalytic performance evaluated in solution bulk shows that both types of Cu‐CNMs can function effective...
We present a spectroelectrochemical setup, in which Raman microscopy is combined with scanning electrochemical (SECM) order to provide both spectroscopic and information on the very same location of an electrode at time. The setup applied subject high academic practical interest, namely, oxygen evolution reaction Ni Ni/Fe electrodes. It comprises transparent substrate electrode, onto thin films are deposited. An ultramicroelectrode (UME) placed closely above obtain information, while...
Porous carbons represent an important group of electrode materials for electrochemical applications due to their high specific surface area, good conductivity, and intrinsic porosity. However, the often-neglected influence porosity on results may lead wrong interpretation data. The aim this work is therefore provide comprehensive understanding effects cyclic voltammetry (CV) – a technique which frequently used initial characterization novel materials. Our approach consists simulating...
The hydrogenation of acrolein over pure and supported silver has been investigated with a focus on the influence catalyst structure reaction pressure (mbar to 20 bar range) activity selectivity. An onset formation allyl alcohol beyond 100 mbar (at 250 °C) is ascribed change in adsorption geometry upon increasing coverage. Smaller particles (in nanometer range), proximity reducible oxide component as well high lead enhanced formation; selectivity other main product propionaldehyde reduced....
Scanning electrochemical microscopy (SECM) has been used to detect and visualize the local electrocatalytic activity of dimensionally stable anodes (DSA) for Cl(2) evolution from brine. The sample generation-tip collection (SG-TC) mode SECM shows limitations arising complications connected with reduction at tip due presence a significant amount nondissolved gas. Because only dissolved can be electrochemically reduced tip, large gas which is produced active spots DSA not detected....