Search Results - "Johánek, Viktor"

Graphene Growth on Pt(111) by Ethylene Chemical Vapor Deposition at Surface Temperatures near 1000 K by Cushing, Gregory W, Johánek, Viktor, Navin, Jason K, Harrison, Ian

“…The nucleation and growth of graphene islands on a Pt(111) surface were examined at temperatures near 1000 K. Graphene was grown by chemical vapor deposition…”
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Counting electrons on supported nanoparticles by Lykhach, Yaroslava, Kozlov, Sergey M., Skála, Tomáš, Tovt, Andrii, Stetsovych, Vitalii, Tsud, Nataliya, Dvořák, Filip, Johánek, Viktor, Neitzel, Armin, Mysliveček, Josef, Fabris, Stefano, Matolín, Vladimír, Neyman, Konstantin M., Libuda, Jörg

“…The electronic interaction between deposited metal nanoparticles and their support material can influence their functionality. Here, a quantification of the…”
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Carbon Chain Length Dependence of Graphene Formation via Thermal Decomposition of Alkenes on Pt(111) by Johánek, Viktor, Nehasil, Václav, Skála, Tomáš, Tsud, Nataliya

“…Graphene layers were prepared by isothermal decomposition of different unsaturated hydrocarbons on Pt(111) single crystal surface and characterized by SRPES…”
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Optimization of ionomer-free ultra-low loading Pt catalyst for anode/cathode of PEMFC via magnetron sputtering by Ostroverkh, Anna, Johánek, Viktor, Dubau, Martin, Kúš, Peter, Khalakhan, Ivan, Šmíd, Břetislav, Fiala, Roman, Václavů, Michal, Ostroverkh, Yevhenii, Matolín, Vladimír

“…In this study, thin-film Pt catalysts with ultra-low metal loadings (ranging from 1 to 200 μg cm−2) were prepared by magnetron sputtering onto various…”
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Stability of the Pd/Co3O4(111) Model Catalysts in Oxidizing and Humid Environments by Schuschke, Christian, Fusek, Lukáš, Uvarov, Vitalii, Vorokhta, Mykhailo, Šmíd, Břetislav, Johánek, Viktor, Lykhach, Yaroslava, Libuda, Jörg, Mysliveček, Josef, Brummel, Olaf

“…The oxidation state and stability of Pd nanoparticles supported on well-ordered Co3O4(111) films prepared on Ir(100) have been investigated in UHV and under…”
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Bulk Hydroxylation and Effective Water Splitting by Highly Reduced Cerium Oxide: The Role of O Vacancy Coordination by Dvořák, Filip, Szabová, Lucie, Johánek, Viktor, Farnesi Camellone, Matteo, Stetsovych, Vitalii, Vorokhta, Mykhailo, Tovt, Andrii, Skála, Tomáš, Matolínová, Iva, Tateyama, Yoshitaka, Mysliveček, Josef, Fabris, Stefano, Matolín, Vladimír

“…Reactions of reduced cerium oxide CeO x with water are fundamental processes omnipresent in ceria-based catalysis. Using thin epitaxial films of ordered CeO x…”
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Pd/Co3O4(111) Interface Formation by Kastenmeier, Maximilian, Fusek, Lukáš, Mohamed, Fatema, Schuschke, Christian, Ronovský, Michal, Skála, Tomáš, Farnesi Camellone, Matteo, Tsud, Nataliya, Johánek, Viktor, Fabris, Stefano, Libuda, Jörg, Piccinin, Simone, Lykhach, Yaroslava, Mysliveček, Josef, Brummel, Olaf

“…The formation of the metal–oxide interface in the Pd/Co3O4(111) model catalyst was investigated by means of density functional theory (DFT), synchrotron…”
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Water Chemistry on Model Ceria and Pt/Ceria Catalysts by Lykhach, Yaroslava, Johánek, Viktor, Aleksandrov, Hristiyan A, Kozlov, Sergey M, Happel, Markus, Skála, Tomáš, Petkov, Petko St, Tsud, Nataliya, Vayssilov, Georgi N, Prince, Kevin C, Neyman, Konstantin M, Matolín, Vladimír, Libuda, Jörg

“…We have studied the interaction of water with stoichiometric CeO2(111)/Cu(111), partially reduced CeO2–x /Cu(111), and Pt/CeO2/Cu(111) model catalysts by means…”
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Efficient Ceria–Platinum Inverse Catalyst for Partial Oxidation of Methanol by Ostroverkh, Anna, Johánek, Viktor, Kúš, Peter, Šedivá, Romana, Matolín, Vladimír

“…Ceria–platinum-based bilayered thin films deposited by magnetron sputtering were developed and tested in regard to their catalytic activity for methanol…”
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Particle Size and Shape Effects in Electrochemical Environments: Pd Particles Supported on Ordered Co3O4(111) and Highly Oriented Pyrolytic Graphite by Kastenmeier, Maximilian, Fusek, Lukáš, Deng, Xin, Skála, Tomáš, Mehl, Sascha, Tsud, Nataliya, Grau, Sebastian, Stumm, Corinna, Uvarov, Vitalii, Johánek, Viktor, Libuda, Jörg, Lykhach, Yaroslava, Mysliveček, Josef, Brummel, Olaf

“…Particle size and shape effects control the oxidation behavior of nanostructured electrocatalysts. We investigated the oxidation state of Pd nanoparticles…”
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The Influence of Graded Amount of Potassium Permanganate on Corrosion of Hot-Dip Galvanized Steel in Simulated Concrete Pore Solutions by Pokorný, Petr, Vacek, Vítězslav, Prodanovic, Nikola, Zabloudil, Adam, Fojt, Jaroslav, Johánek, Viktor

“…This paper evaluates the amount of KMnO4 in simulated concrete pore solution (pH 12.8) on the corrosion behaviour of hot-dip galvanized steel (HDG). In the…”
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Cobalt Oxide-Supported Pt Electrocatalysts: Intimate Correlation between Particle Size, Electronic Metal–Support Interaction and Stability by Bertram, Manon, Prössl, Carolin, Ronovský, Michal, Knöppel, Julius, Matvija, Peter, Fusek, Lukáš, Skála, Tomáš, Tsud, Nataliya, Kastenmeier, Maximilian, Matolín, Vladimír, Mayrhofer, Karl J. J, Johánek, Viktor, Mysliveček, Josef, Cherevko, Serhiy, Lykhach, Yaroslava, Brummel, Olaf, Libuda, Jörg

“…Oxide supports can modify and stabilize platinum nanoparticles (NPs) in electrocatalytic materials. We studied related phenomena on model systems consisting of…”
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Adatom and Nanoparticle Dynamics on Single-Atom Catalyst Substrates by Farnesi Camellone, Matteo, Dvořák, Filip, Vorokhta, Mykhailo, Tovt, Andrii, Khalakhan, Ivan, Johánek, Viktor, Skála, Tomáš, Matolínová, Iva, Fabris, Stefano, Mysliveček, Josef

“…Single-atom catalysts represent an essential and ever-growing family of heterogeneous catalysts. Recent studies indicate that besides the valuable catalytic…”
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Reactive interaction of isopropanol with Co3O4(111) and Pt/Co3O4(111) model catalysts by Hohner, Chantal, Ronovský, Michal, Brummel, Olaf, Skála, Tomáš, Šmíd, Břetislav, Tsud, Nataliya, Vorokhta, Mykhailo, Prince, Kevin C., Mysliveček, Josef, Johánek, Viktor, Lykhach, Yaroslava, Libuda, Jörg

“…[Display omitted] •Isopropanol on Pt/Co3O4(111) decomposes to isopropoxide on Co3O4(111) and enolate species on Pt nanoparticles.•Reactive interaction of…”
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Durable ultra‐low‐platinum ionomer‐free anode catalyst for hydrogen proton exchange membrane fuel cell by Ostroverkh, Anna, Dubau, Martin, Kúš, Peter, Haviar, Stanislav, Václavů, Michal, Šmíd, Břetislav, Fiala, Roman, Yakovlev, Yurii, Ostroverkh, Yevhenii, Johánek, Viktor

“…Summary An ultra‐low‐platinum catalyst based on finely dispersed platinum (Pt) deposited on a highly porous complex microporous layer was investigated as a…”
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Decomposition of Acetic Acid on Model Pt/CeO2 Catalysts: The Effect of Surface Crowding by Neitzel, Armin, Lykhach, Yaroslava, Johánek, Viktor, Tsud, Nataliya, Skála, Tomáš, Prince, Kevin C, Matolín, Vladimír, Libuda, Jörg

“…Adsorption and decomposition of acetic acid were studied by means of synchrotron radiation photoelectron spectroscopy, resonant photoemission spectroscopy, and…”
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Reduction of Pt2+ species in model Pt–CeO2 fuel cell catalysts upon reaction with methanol by Neitzel, Armin, Johánek, Viktor, Lykhach, Yaroslava, Skála, Tomáš, Tsud, Nataliya, Vorokhta, Mykhailo, Matolín, Vladimír, Libuda, Jörg

“…[Display omitted] •Pt2+ species are reduced upon reaction with methanol.•Reduction of one Pt2+ requires presence of two oxygen vacancies.•Reduction of Pt2+…”
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Role of Oxygen in Acetic Acid Decomposition on Pt(111) by Neitzel, Armin, Lykhach, Yaroslava, Johánek, Viktor, Tsud, Nataliya, Skála, Tomáš, Prince, Kevin C, Matolín, Vladimír, Libuda, Jörg

“…We have investigated the role of coadsorbed atomic oxygen during the decomposition of acetic acid on Pt(111) by means of temperature-programmed desorption…”
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Adsorption and Decomposition of Formic Acid on Model Ceria and Pt/Ceria Catalysts by Lykhach, Yaroslava, Happel, Markus, Johánek, Viktor, Skála, Tomáš, Kollhoff, Fabian, Tsud, Nataliya, Dvořák, Filip, Prince, Kevin C, Matolín, Vladimír, Libuda, Jörg

“…Adsorption and reaction of formic acid on stoichiometric CeO2(111), partially reduced CeO2–x , and Pt/CeO2(111) films prepared on Cu(111) were studied by means…”
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Methanol Adsorption and Decomposition on Pt/CeO2(111)/Cu(111) Thin Film Model Catalyst by Matolín, Vladimír, Johánek, Viktor, Škoda, Michal, Tsud, Natalia, Prince, Kevin C, Skála, Tomáš, Matolínová, Iva

“…Adsorption and desorption of methanol on Pt particles on a CeO2(111)/Cu(111) thin film surface and on an ion-eroded Pt(111) single crystal were investigated by…”
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