A5006672408- Electrochemical Analysis and Applications
- Advanced biosensing and bioanalysis techniques
- Gold and Silver Nanoparticles Synthesis and Applications
- Analytical Chemistry and Sensors
- Biosensors and Analytical Detection
- Electrocatalysts for Energy Conversion
- Conducting polymers and applications
- Molecular Junctions and Nanostructures
- Fuel Cells and Related Materials
- Advanced battery technologies research
- Electronic and Structural Properties of Oxides
- Copper-based nanomaterials and applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Spectroscopy and Chemometric Analyses
- Advancements in Battery Materials
- Supercapacitor Materials and Fabrication
- Force Microscopy Techniques and Applications
- Advanced Battery Materials and Technologies
- Electron and X-Ray Spectroscopy Techniques
- Quantum Dots Synthesis And Properties
- Advanced Chemical Sensor Technologies
- ZnO doping and properties
Ruhr University Bochum
2012-2018
Reversible interconversion of water into H2 and O2, the recombination O2 to H2O thereby harnessing energy reaction provides a completely green cycle for sustainable conversion storage. The realization this goal is however hampered by lack efficient catalysts splitting oxygen reduction. We report exceptionally active bifunctional electrodes comprising Mn3O4 Co3O4 nanoparticles embedded in nitrogen-doped carbon, obtained selective pyrolysis subsequent mild calcination manganese cobalt N4...
The influence of the reaction rate at SECM tip on overall imaging result is often neglected during respiration studies performed by SECM. effect driving force elucidated using a potential pulse profile implemented into constant-distance mode. Time-dependent data acquisition allows visualization transition between behaving as passive observer and actively inducing transmembrane diffusion oxygen.
In pursuance of efficient tools for the local analysis and characterization novel photoelectrocatalytic materials, several SECM-based techniques have been developed, aiming on combined benefit a irradiation analyzed sample microelectrode probe localized electrochemical surface. We present development application scanning photoelectrochemical microscopy (SPECM) laterally resolved materials. Particularly, system was developed n-type semiconductor-based photoanodes water splitting. By using tip...
Abstract Die reversible Umwandlung von Wasser in H 2 und O sowie die Rekombination zu unter Gewinnung Energie ist Basis für einen vollständig nachhaltigen Zyklus der Energiekonversion ‐speicherung. Realisierung dieses Ziels wird jedoch Nichtverfügbarkeit effizienter Katalysatoren Wasserspaltung Sauerstoffreduktion behindert. Wir berichten über hochaktive bifunktionale Sauerstoffelektroden, aus Mn 3 4 ‐ Co ‐Nanopartikeln, eingeschlossen N‐dotierten Kohlenstoff, bestehen durch selektive...
The detection of cellular respiration activity is important for the assessment status a biological cell. Due to its non-invasive character and high spatial resolution scanning electrochemical microscopy (SECM) powerful tool single cell measurements. Common limitations studies performed by SECM are discussed strategies provided further adapt schemes specific requirements investigation respiration. In particular combination potential pulse technique in redox competition mode with...
In thin film deposition processes, the temperature is one of crucial process parameters for obtaining films with desired properties. Usually optimum found by conducting several depositions sequentially in a time consuming process. This paper demonstrates facile and rapid route simultaneous at six different temperatures ranging from 100 to 1000 °C. Cuprite (Cu 2 O) was chosen study as this material interest energy applications. The are assessed their crystallographic, microstructural, Raman...
Abstract As surface‐enhanced Raman scattering (SERS) crucially depends on the morphology of nanostructured metal surfaces, we developed a convenient approach to produce size gradient truncated spherical Au nanovoids single bipolar electrode. The continuous potential drop in solution implies linearly changing interfacial difference at wireless electrode, leading rate electrodeposition. Such structural enables fast and reproducible screening for those structures, evoking high SERS intensity...
Scanning electrochemical microscopy (SECM) is coupled with surface-enhanced Raman scattering (SERS) to characterize local surface modifications. SECM utilized for the patterning of para-nitrothiophenol self-assembled monolayers (SAMs) in direct mode a subsequent readout chemical patterns by means combined SECM-SERS. The SECM-SERS combination allows monitoring processes and provides simultaneous complementary spectroscopic information. reaction products upon SAM reduction, specifically...
Abstract The use of scanning electrochemical microscopy (SECM) for the qualitative and quantitative determination sulfapyridine (SPY) in milk is described. A direct competitive immunoassay was performed involving an antibiotic horseradish peroxidase (HRP)‐labeled analog using selective capture antibodies immobilized on surface Protein G‐modified glassy carbon plates. SECM detection accomplished by means sample generator/tip collector (GC) mode reduction benzoquinone (BQ) generated upon...
Der Einfluss der Reaktionsgeschwindigkeit an SECM-Sonde wird bei Untersuchungen Zellatmung oft vernachlässigt. Ein Constant-Distance-Modus mit Potentialpulsprofil macht die Auswirkung Triebkraft Sondenreaktion erfassbar. Die zeitabhängige Datenaufnahme ermöglicht Visualisierung des Übergangs zwischen einer Sonde, als passiver Beobachter agiert, zu aktiv transmembranäre Diffusion von Sauerstoff induziert.
Katalysatoren mit Doppelfunktion …︁für Sauerstoffreduktion und -entwicklung sind wichtig für die Umsetzung wiederaufladbarer Metall-Luft-Batterien regenerativer Brennstoffzellen. In ihrer Zuschrift auf S. 8648 ff. berichten W. Schuhmann, M. Muhler et al. über außergewöhnlich aktive bifunktionale aus Co-, Mn- Ni-Oxiden, eingebettet in stickstoffdotiertem Kohlenstoff, herkömmliche Pt-, Ir- Ru-basierte übertreffen.