Search results for: Pawel J. Kulesza

Items from 1 to 20 out of 135 results

article

Synergism of Flame‐Retardant, Self‐Healing, High‐Conductive and Polar to a Multi‐Functional Binder for Lithium–Sulfur Batteries

Mingliang Liu, Peng Chen, Xinchen Pan, Shencheng Pan, more

Advanced Functional Materials > 32 > 36 > n/a - n/a

In this work, a multifunctional binder with self‐healing, flame retardant, high conductivity, and abundant polar groups is prepared by the free radical polymerization method and applied to lithium–sulfur (Li‐S) batteries to achieve high safety and exceptional electrochemical performance. The self‐healing characteristic of binder induced by intermolecular hydrogen bonds and SS dynamic covalent bonds...

article

Discrete, Cationic Palladium(II)‐Oxo Clusters via f‐Metal Ion Incorporation and their Macrocyclic Host‐Guest Interactions with Sulfonatocalixarenes

Saurav Bhattacharya, Andrea Barba‐Bon, Tsedenia A. Zewdie, Anja B. Müller, more

Angewandte Chemie > 134 > 25 > n/a - n/a

We report on the discovery of the first two examples of cationic palladium(II)‐oxo clusters (POCs) containing f‐metal ions, [Pd^II₆O₁₂M₈{(CH₃)₂AsO₂}₁₆(H₂O)₈]⁴⁺ (M=Ce^IV, Th^IV), and their physicochemical characterization in the solid state, in solution and in the gas phase. The molecular structure of the two novel POCs comprises an octahedral {Pd₆O₁₂}¹²⁻ core that is capped by eight M^IV ions, resulting...

article

Discrete, Cationic Palladium(II)‐Oxo Clusters via f‐Metal Ion Incorporation and their Macrocyclic Host‐Guest Interactions with Sulfonatocalixarenes

Saurav Bhattacharya, Andrea Barba‐Bon, Tsedenia A. Zewdie, Anja B. Müller, more

Angewandte Chemie International Edition > 61 > 25 > n/a - n/a

article

Fe^III₄₈‐Containing 96‐Tungsto‐16‐Phosphate: Synthesis, Structure, Magnetism and Electrochemistry

Joydeb Goura, Bassem S. Bassil, Jasleen K. Bindra, Iwona A. Rutkowska, more

Chemistry – A European Journal > 26 > 68 > 15821 - 15824

The 48‐Fe^III‐containing 96‐tungsto‐16‐phosphate, [Fe^III₄₈(OH)₇₆(H₂O)₁₆(HP₂W₁₂O₄₈)₈]³⁶⁻ (Fe₄₈), has been synthesized and structurally characterized. This polyanion comprises eight equivalent {Fe^III₆P₂W₁₂} units that are linked in an end‐on fashion forming a macrocyclic assembly that contains more iron centers than any other polyoxometalate (POM) known to date. The novel Fe₄₈ was synthesized by a simple...

article

Electrocatalytic Oxygen Reduction in Alkaline Medium at Graphene-Supported Silver-Iron Carbon Nitride Sites Generated During Thermal Decomposition of Silver Hexacyanoferrate

Beata Dembinska, Kamila Brzozowska, Adam Szwed, Krzysztof Miecznikowski, more

Electrocatalysis > 2019 > 10 > 1 > 112-124

Silver-iron carbon nitride, which has been prepared by pyrolysis (under inert atmosphere) of silver hexacyanoferrate(II) deposited on graphene nanoplatelets, is considered here as electrocatalyst for oxygen reduction in alkaline medium (0.1 M potassium hydroxide electrolyte) in comparison to simple silver nanoparticles and iron carbon nitride (prepared separately in a similar manner on graphene nanoplatelets)...

article

Enhanced photoelectrochemical CO2-reduction system based on mixed Cu2O – nonstoichiometric TiO2 photocathode

Ewelina Szaniawska, Krzysztof Bienkowski, Iwona A. Rutkowska, Pawel J. Kulesza, more

Catalysis Today > 2018 > 300 > C > 145-151

Photoelectrochemical reduction of CO₂ is explored here with respect to the possible production of simple organic fuels. While the photoelectrochemical system is based on p-type Cu₂O semiconductor, special attention has been paid to its stabilization, intentional modification and fabrication, as well as to optimization of experimental conditions permitting control and diversification of the CO₂ reduction...

article

Amperometric detector for gas chromatography based on a silica sol-gel solid electrolyte

William H. Steinecker, Krzysztof Miecznikowski, Pawel J. Kulesza, Zechariah D. Sandlin, more

Talanta > 2017 > 174 > C > 1-6

An electrochemical cell comprising a silica sol-gel solid electrolyte, a working electrode that protrudes into a gas phase, and reference and counter electrodes that contact the solid electrolyte comprises an amperometric detector for gas chromatography. Under potentiostatic conditions, a current related to the concentration of an analyte in the gas phase is produced by its oxidation at the three-phase...

article

Heterogeneous iron-containing carbon gels as catalysts for oxygen electroreduction: Multifunctional role of sulfur in the formation of efficient systems

Wojciech Kiciński, Beata Dembinska, Małgorzata Norek, Bogusław Budner, more

Carbon > 2017 > 116 > C > 655-669

(Co)polycondensation of resorcinol and heterocyclic aldehydes yields heteroaromatic porous polymers. Carbonization of such polymers results in N-doped, S-doped, N/S-co-doped or undoped carbon gels depending on the starting composition of reactants. If the (co)polycondensation is initiated with FeCl₃, Fe-containing carbon gels are obtained. Depending on the nature of the heteroatom doping (solely N...

article

Evaluation of reduced-graphene-oxide-supported gold nanoparticles as catalytic system for electroreduction of oxygen in alkaline electrolyte

Sylwia Zoladek, Iwona A. Rutkowska, Magdalena Blicharska, Krzysztof Miecznikowski, more

Electrochimica Acta > 2017 > 233 > C > 113-122

Chemically-reduced graphene-oxide-supported gold nanoparticles with a diameter, of 40–60nm are considered here as catalytic materials for the reduction of oxygen in alkaline medium in comparison to analogous systems based on conventional Vulcan carbon carriers. Gold nanoparticles are prepared by the chemical reduction method, in which the NaBH₄-prereduced Keggin-type phosphomolybdate heteropolyblue...

article

Carbon supported PdxPty nanoparticles for oxygen reduction. The effect of Pd:Pt ratio

Monika Góral-Kurbiel, Robert Kosydar, Jacek Gurgul, Beata Dembińska, more

Electrochimica Acta > 2016 > 222 > C > 1220-1233

Studies concentrated on the development of carbon supported Pd_xPt_y/C electrocatalysts for the oxygen reduction reaction (ORR). The application of the reverse ‘water-in-oil’ microemulsion method allowed to obtain a number of electrocatalysts with metal nanoparticles of ca. 5–6nm in size. Catalysts with the constant metal loading of 10wt% and various Pd:Pt atomic ratios were investigated. The textural...

article

Enhancement of oxidative electrocatalytic properties of platinum nanoparticles by supporting onto mixed WO3/ZrO2 matrix

Iwona A. Rutkowska, Anna Wadas, Pawel J. Kulesza

Applied Surface Science > 2016 > 388 > PB > 616-623

Nanostructured mixed metal (W, Zr) oxide matrices (in a form of layered intercalated films of WO₃ and ZrO₂) are considered here for supporting and activating catalytic platinum nanoparticles toward electrooxidation of ethanol. Remarkable increases of electrocatalytic (voltammetric, chronoamperometric) currents measured in 0.5moldm⁻³H₂SO₄ (containing 0.5moldm⁻³ ethanol) have been observed. Comparison...

article

Bacterial-biofilm enhanced design for improved electrocatalytic reduction of oxygen in neutral medium

Weronika A. Lotowska, Iwona A. Rutkowska, Ewelina Seta, Ewelina Szaniawska, more

Electrochimica Acta > 2016 > 213 > C > 314-323

The specific reactivity and ability of biofilms to form stable polymer-like hydrogel aggregates of microorganisms adhering to common solid (including the glassy carbon electrode) surfaces have been explored here to form systems analogous to electrocatalytic redox-polymer modified electrodes. Growth of biofilms has been demonstrated with use of Yersinia enterocolitica, a robust Gram-negative rod-shaped...

article

Mixed layered WO3/ZrO2 films (with and without rhodium) as active supports for PtRu nanoparticles: enhancement of oxidation of ethanol

Iwona A. Rutkowska, Anna Wadas, Pawel J. Kulesza

Electrochimica Acta > 2016 > 210 > C > 575-587

Mixed-valent tungsten(VI,V) oxide and zirconium(IV) oxide have been sequentially deposited and integrated through voltammetric potential cycling to form robust sub-microstructured mixed metal oxide (WO₃/ZrO₂) films on glassy carbon electrode. Attractive interactions between anionic tungstate units (of the inner WO₃ layer) and cationic oxo-zirconium surface species (existing in acid media on ZrO₂ nanostructures...

article

Phase Transition Detection in Accumulation of a Potential Anticancer Drug Cl-IPBD with DNA: Supercoiled and Linear pUC19 Plasmids

Dominika Janiszek, Monika M. Karpinska, Andrzej Niewiadomy, Agnieszka Girstun, more

Electrochimica Acta > 2016 > 210 > C > 422-434

The electrochemical investigation of the plasmid DNA (pUC19) interactions with Cl-IPBD (4-chloro-6-(1H-imidazo[4,5-b]phenasine-2-yl)benzene-1,3-diol), a prospective anticancer drug, have revealed the presence of a phase transition between two orientations of the compound in the DNA layer adsorbed on a glassy carbon (GC) electrode. Except for the needed sufficient incorporation of the compound into...

article

Influence of polymolybdate adsorbates on electrooxidation of ethanol at PtRu nanoparticles: Combined electrochemical, mass spectrometric and X-ray photoelectron spectroscopic studies

Barbara Gralec, Adam Lewera, Pawel J. Kulesza

Journal of Power Sources > 2016 > 315 > C > 56-62

The role Keggin-type phosphomolybdate (PMo₁₂O₄₀³⁻) ions (adsorbed on carbon-supported PtRu, PtRu/C) on electrooxidation of ethanol is addressed here. The combined results obtained using Differential Electrochemical Mass Spectrometry, X-ray Photoelectron Spectroscopy and Cyclic Voltammetry are consistent with the view that presence of the Keggin-type polyoxometallate, phosphomolybdate, ions (adsorbates)...

article

Evaluation of kinetic constants on porous, non-noble catalyst layers for oxygen reduction—A comparative study between SECM and hydrodynamic methods

Anna Dobrzeniecka, Aleksandar R. Zeradjanin, Justus Masa, Magdalena Blicharska, more

Catalysis Today > 2016 > 262 > C > 74-81

An advanced approach based on scanning electrochemical microscopy (SECM) was used to investigate the kinetics of the oxygen reduction reaction (ORR) on multiwalled carbon nanotubes (MWCNTs) and a composite of MWCNTs and cobalt (IX) protoporphyrin (MWCNTs/CoP). The amount of hydrogen peroxide produced during ORR was studied as a function of catalyst loading in an electrolyte of pH 7. Additionally,...

article

Physicochemical identity and charge storage properties of battery-type nickel oxide material and its composites with activated carbon

Narjes Bagheri, Alireza Aghaei, Nick Vlachopoulos, Magdalena Skunik-Nuckowska, more

Electrochimica Acta > 2016 > 194 > C > 480-488

The structural properties of annealed nickel oxide and its composites with activated carbon (synthesized via simple precipitation methods) have been addressed using X-ray diffraction, X-ray photoelectron spectroscopy, nitrogen adsorption/desorption method and scanning electron microscopy. The charge storage properties of materials have also been investigated in three- and two-electrode configurations...

article

Enhancement of oxygen reduction at Co-porphyrin catalyst by supporting onto hybrid multi-layered film of polypyrrole and polyoxometalate-modified gold nanoparticles

Sylwia Zoladek, Iwona A. Rutkowska, Magdalena Blicharska, Katarzyna Skorupska, more

Journal of Solid State Electrochemistry > 2016 > 20 > 4 > 1199-1208

Three-dimensional multi-layered films (on glassy carbon) composed of networks of polyoxometallate (PMo₁₂O₄₀ ³⁻)-modified gold nanoparticles linked together through the alternately deposited ultra-thin layers of polypyrrole have served as active supports for Co-porphyrin catalytic centers. The hybrid organic-inorganic films (supports) have been prepared by using the layer-by-layer approach...

article

Selenourea-assisted synthesis of selenium-modified iridium catalysts: evaluation of their activity toward reduction of oxygen

Beata Dembinska, Anna Dobrzeniecka, Marcin Pisarek, Pawel J. Kulesza

Electrochimica Acta > 2015 > 185 > C > 162-171

Carbon-supported selenium-modified iridium nanoparticles have been synthesized using IrCl₃ and selenourea serving as a precursor of selenium and nitrogen atoms. Here nanostructured iridium is chosen as model base metal for fundamental catalytic considerations because it exhibits interfacial properties resembling both platinum and ruthenium. The systems' electrocatalytic properties have been studied...

article

Development of Hybrid Tungsten Oxide Photoanodes Admixed with Borododecatungstate-Polyanion Modified-Hematite: Enhancement of Water Oxidation upon Irradiation with Visible Light

Krzysztof Miecznikowski, Alejandra Ramírez, Sebastian Fiechter, Peter Bogdanoff, more

Electrochimica Acta > 2015 > 179 > C > 379-385

A typical procedure based on sol-gel aggregation for the fabrication of mesoporous WO₃ photoanodes was modified and used produce modified tungsten oxide films by utilizing the tungstic acid sol admixed with Keggin-type borotungstic acid (H₅BW₁₂O₄₀) or the borotungstic acid–stabilized hematite (Fe₂O₃). Physicochemical properties (structure, morphology and spectroscopic identity) of the resulting hybrid...

Publication date

Last 3 years (3)

Close

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

From:

To:
Set your own date range

Data set

Elsevier (94)
Springer (23)
Wiley (8)
ACS (7)
PSJD (3)

Journal

Electrochimica Acta (50)
Journal of Solid State Electrochemistry (18)
Journal of Electroanalytical Chemistry (9)
Journal of Power Sources (9)
Applied Surface Science (4)
Electrocatalysis (4)
Electrochemistry Communications (4)
Analytica Chimica Acta (3)
Analytical Chemistry (3)
Biuletyn Polskiego Stowarzyszenia Wodoru i Ogniw Paliwowych (3)
Catalysis Today (3)
Colloids and Surfaces A: Physicochemical and Engineering Aspects (3)
Angewandte Chemie (2)
Angewandte Chemie International Edition (2)
Bioelectrochemistry (2)
Chemistry of Materials (2)
Electroanalysis (2)
Advanced Functional Materials (1)
Carbon (1)
Chemical Physics Letters (1)
Chemistry – A European Journal (1)
Corrosion Science (1)
International Journal of Hydrogen Energy (1)
Journal of Applied Electrochemistry (1)
Journal of the American Chemical Society (1)
Polyhedron (1)
Solid State Ionics (1)
Talanta (1)
The Journal of Physical Chemistry B (1)
more

INFONA - science communication portal

Search results for: Pawel J. Kulesza

Synergism of Flame‐Retardant, Self‐Healing, High‐Conductive and Polar to a Multi‐Functional Binder for Lithium–Sulfur Batteries

Discrete, Cationic Palladium(II)‐Oxo Clusters via f‐Metal Ion Incorporation and their Macrocyclic Host‐Guest Interactions with Sulfonatocalixarenes

Discrete, Cationic Palladium(II)‐Oxo Clusters via f‐Metal Ion Incorporation and their Macrocyclic Host‐Guest Interactions with Sulfonatocalixarenes

Fe^III₄₈‐Containing 96‐Tungsto‐16‐Phosphate: Synthesis, Structure, Magnetism and Electrochemistry

Electrocatalytic Oxygen Reduction in Alkaline Medium at Graphene-Supported Silver-Iron Carbon Nitride Sites Generated During Thermal Decomposition of Silver Hexacyanoferrate

Enhanced photoelectrochemical CO2-reduction system based on mixed Cu2O – nonstoichiometric TiO2 photocathode

Amperometric detector for gas chromatography based on a silica sol-gel solid electrolyte

Heterogeneous iron-containing carbon gels as catalysts for oxygen electroreduction: Multifunctional role of sulfur in the formation of efficient systems

Evaluation of reduced-graphene-oxide-supported gold nanoparticles as catalytic system for electroreduction of oxygen in alkaline electrolyte

Carbon supported PdxPty nanoparticles for oxygen reduction. The effect of Pd:Pt ratio

Enhancement of oxidative electrocatalytic properties of platinum nanoparticles by supporting onto mixed WO3/ZrO2 matrix

Bacterial-biofilm enhanced design for improved electrocatalytic reduction of oxygen in neutral medium

Mixed layered WO3/ZrO2 films (with and without rhodium) as active supports for PtRu nanoparticles: enhancement of oxidation of ethanol

Phase Transition Detection in Accumulation of a Potential Anticancer Drug Cl-IPBD with DNA: Supercoiled and Linear pUC19 Plasmids

Influence of polymolybdate adsorbates on electrooxidation of ethanol at PtRu nanoparticles: Combined electrochemical, mass spectrometric and X-ray photoelectron spectroscopic studies

Evaluation of kinetic constants on porous, non-noble catalyst layers for oxygen reduction—A comparative study between SECM and hydrodynamic methods

Physicochemical identity and charge storage properties of battery-type nickel oxide material and its composites with activated carbon

Enhancement of oxygen reduction at Co-porphyrin catalyst by supporting onto hybrid multi-layered film of polypyrrole and polyoxometalate-modified gold nanoparticles

Selenourea-assisted synthesis of selenium-modified iridium catalysts: evaluation of their activity toward reduction of oxygen

Development of Hybrid Tungsten Oxide Photoanodes Admixed with Borododecatungstate-Polyanion Modified-Hematite: Enhancement of Water Oxidation upon Irradiation with Visible Light

Filter options

Publication date

Content availability

Publication language

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: Pawel J. Kulesza

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication language

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options