A5013771670- Catalytic Processes in Materials Science
- Electrochemical Analysis and Applications
- Molecular Junctions and Nanostructures
- Catalysis and Oxidation Reactions
- Lipid Membrane Structure and Behavior
- Mesoporous Materials and Catalysis
- Force Microscopy Techniques and Applications
- Electrodeposition and Electroless Coatings
- Corrosion Behavior and Inhibition
- Graphene research and applications
- Spectroscopy and Quantum Chemical Studies
- Electrocatalysts for Energy Conversion
- Zeolite Catalysis and Synthesis
- Supercapacitor Materials and Fabrication
- Gas Sensing Nanomaterials and Sensors
- Adsorption and biosorption for pollutant removal
- Water Quality Monitoring and Analysis
- Hydrogen embrittlement and corrosion behaviors in metals
- Carbon Nanotubes in Composites
- Surfactants and Colloidal Systems
- Chemical Thermodynamics and Molecular Structure
- Catalysis and Hydrodesulfurization Studies
- Analytical chemistry methods development
- Thermodynamic properties of mixtures
- Surface Chemistry and Catalysis
Nicolaus Copernicus University
2007-2023
University of Guelph
2004-2018
Warsaw University of Technology
2011-2015
Jagiellonian University
2007
Technical University of Munich
2007
Institute of Physical Chemistry
2006
AGH University of Krakow
2006
University of Waterloo
1998
University of Warsaw
1986-1991
The adsorption properties of a modified activated carbon with various oxygen- and/or nitrogen-containing surface groups toward copper ions was studied. Previously de-ashed and chemically commercial D-43/1 (Carbo-Tech, Essen, Germany) used. chemical the were estimated by standard neutralization titration HCl, NaOH, NaOC2H5. Cu2+ on three carbons from aqueous CuSO4 solution pH measured. samples adsorbed analyzed spectroscopic methods (X-ray photoelectron spectroscopy, Fourier transform...
Electrochemical measurements, atomic force microscopy, and scanning tunneling microscopy have been combined to present the first direct images of potential-controlled phase transition between hemimicellar condensed states a dodecyl sulfate (SDS) film at Au(111) electrode surface. The adsorbed SDS forms stripe-shaped aggregates small or moderate charge densities electrode. High-resolution STM these revealed that molecules are ordered form long-range two-dimensional lattice. A unit cell this...
Silicon is a widely applied material and the wetting of silicon surface an important phenomenon. However, contradictions in literature appear considering value water contact angle (WCA). The purpose this study to present holistic experimental theoretical approach WCA determination. To do this, we checked chemical composition (1,0,0) by using X-ray photoelectron spectroscopy (XPS) method, next was purified different cleaning methods. As it proved that airborne hydrocarbons change solid...
Chronocoulometry and the thermodynamic analysis of charge density data were employed to describe energetics sodium dodecyl sulfate (SDS) adsorption at Au(111) electrode surface. Thermodynamic such as Gibbs excess, energy adsorption, film pressure adsorbed SDS determined for a broad range potentials, densities, bulk concentrations. The present results, combined with our previous scanning probe microscopy (SPM) studies, show that surface has two-state character. At small or moderate absolute...
The dependence of the surface-enhanced Raman scattering (SERS) pyrazine (pz), adsorbed on polycrystalline gold electrodes ("smooth" and rough), both surface coverage morphology was investigated. rough electrode observed by atomic force microscopy (AFM), data were obtained from previous electrochemical measurements. plots between SERS intensity pz ring-breathing mode (ca. 1016 cm-1) parameters (roughness factor) obtained. reached a maximum 20 30 ORCs. Independent AFM measurements indicated...
This work has presented the results of first systematic reactive Monte Carlo studies on influence oxygen surface groups equilibria reaction leading to polar product in pores activated carbons. Carbonyl have been chosen as simple representative functionalities. It should be noted that effects chemical nature carbon studied phenomenon are not sufficiently known. The our theoretical provided some general regularities which can adapted real processes and show direction synthesis/modification...
We described the first scanning tunneling microscopy study of spreading unilamellar vesicles 1,2-dimyristoyl-sn-glycero-3-phosphatidylcholine (DMPC) at a Au(111) electrode surface. At initial stage film formation, molecular resolution images revealed that DMPC molecules are adsorbed flat with acyl chains oriented parallel to The assemble into double rows by aligning in nearest neighbor direction reconstructed surface and assuming 90 ± 10° angle respect line row. After ∼30 min, this is...
The effects of the Cr concentration in hydrothermally synthesized Cr−MCM-41 and impact various postsynthesis treatments including grafting with alumina were investigated. Using physicochemical characterization by XRD, diffuse reflectance UV−vis spectroscopy, EPR 29Si MAS NMR H2 TPR, acidity measurements, formation mono- dichromate surface species as well CrV, dispersed CrIII, clustered CrIII was detected, confirming high speciation valence versatility chromium. roles each preparation stage,...
Electrochemical scanning tunneling microscopy (EC-STM) has been applied to study the structure of film formed by fusion cholesterol suspensions and mixed dimyristoylphosphatidylcholine (DMPC)/cholesterol vesicles on a Au(111) electrode surface. It demonstrated that molecules assemble at gold support into several structures templated crystallography metal surface involving flat or edge-on adsorbed molecules. Studies DMPC/cholesterol revealed ordered domains either pure DMPC were formed. These...
Synthesis of high-surface-area graphene oxide for application in next-generation devices is still challenging. In this study, we present a simple and green-chemistry procedure the synthesis oxygen-enriched materials, having very large surface areas compared with those reported powdered graphene-related solids. Using hydrothermal treatment carbon nanohorns by H2O2 oxidant under elevated pressure, progressive creation stable nanomaterial, denoted as open-sensu-shaped (OSSGO) us, observed. This...
Electrochemical measurements, atomic force microscopy, and scanning tunneling microscopy have been combined to describe the electric-field-controlled surface aggregation of N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (DDAPS), a model zwitterionic surfactant, at Au(111) electrode surface. At concentrations below critical micelle concentration (CMC), monomer adsorbs aggregates The charge on metal (sigmaM) controls orientation adsorbed molecules consequently film structure. high...
We have employed electrochemical and neutron reflectivity measurements to study the transfer of 4-pentadecyl-pyridine (C15−4Py), an insoluble amphiphilic surfactant, from gas−solution (G−S) interface metal−solution (M−S) a Au(111) electrode. Neutron experiments demonstrated that C15−4Py forms bilayer at electrode surface. Electrochemical this is formed spontaneously when surface brought in contact with film-covered G−S interface. The surfactant molecules can move M−S across triple-phase...