Search Results - "Zafeiratos, S"

Highly active nano-sized iridium catalysts: synthesis and operando spectroscopy in a proton exchange membrane electrolyzer by Lettenmeier, P, Majchel, J, Wang, L, Saveleva, V A, Zafeiratos, S, Savinova, E R, Gallet, J-J, Bournel, F, Gago, A S, Friedrich, K A

“…A stable and cost effective oxygen evolution reaction (OER) catalyst is crucial for the large-scale market penetration of proton exchange membrane (PEM) water…”
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The Effect of Polarization and Reaction Mixture on the Rh/YSZ Oxidation State During Ethylene Oxidation Studied by Near Ambient Pressure XPS by Katsaounis, A., Teschner, D., Zafeiratos, S.

“…In this study, near ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) is applied to investigate an electrochemical cell consisting of a rhodium thin…”
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Effect of support nature on the cobalt-catalyzed CO2 hydrogenation by Díez-Ramírez, J., Sánchez, P., Kyriakou, V., Zafeiratos, S., Marnellos, G.E., Konsolakis, M., Dorado, F.

“…[Display omitted] •The CO2 methanation performance of cobalt-based catalysts is explored.•The impact of support (CeO2, ZrO2, Gd2O3, ZnO) was…”
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Insight into the Mechanisms of High Activity and Stability of Iridium Supported on Antimony-Doped Tin Oxide Aerogel for Anodes of Proton Exchange Membrane Water Electrolyzers by Saveleva, V. A, Wang, L, Kasian, O, Batuk, M, Hadermann, J, Gallet, J.-J, Bournel, F, Alonso-Vante, N, Ozouf, G, Beauger, C, Mayrhofer, K. J. J, Cherevko, S, Gago, A. S, Friedrich, K. A, Zafeiratos, S, Savinova, E. R

“…The use of high amounts of iridium in industrial proton exchange membrane water electrolyzers (PEMWE) could hinder their widespread use for the decarbonization…”
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Methanol oxidation over model cobalt catalysts: Influence of the cobalt oxidation state on the reactivity by Zafeiratos, S., Dintzer, T., Teschner, D., Blume, R., Hävecker, M., Knop-Gericke, A., Schlögl, R.

“…Methanol oxidation on cobalt: the relation between the gas phase composition (I), the cobalt oxidation state (II) and the dominant reaction paths (III),…”
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Surface oxidation of NiCo alloy: A comparative X-ray photoelectron spectroscopy study in a wide pressure range by Law, Y.T., Dintzer, T., Zafeiratos, S.

“…[Display omitted] ► NiCo alloy surface oxidation is studied in two pressure regimes (5×10−7mbar and 0.5bar). ► Segregation and preferential oxidation of cobalt…”
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A Comparative Ambient Pressure X-ray Photoelectron and Absorption Spectroscopy Study of Various Cobalt-Based Catalysts in Reactive Atmospheres by Turczyniak, S., Luo, W., Papaefthimiou, V., Ramgir, N. S., Haevecker, M., Machocki, A., Zafeiratos, S.

“…The oxidation state of cobalt in various forms (single crystal, nanopowder, deposited on CeO 2 and ZnO supports) was investigated in situ under O 2 , H 2 and…”
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A comparative study of ethanol reactivity over Ni, Co and NiCo-ZnO model catalysts by Law, Y.T., Doh, W.H., Luo, W., Zafeiratos, S.

“…•The ethanol decomposition pathway on ZnO supported NiCo was studied by TPD.•Dehydrogenation of OH group takes place as a first step, generating adsorbed…”
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Probing Metal–Support Interaction in Reactive Environments: An in Situ Study of PtCo Bimetallic Nanoparticles Supported on TiO2 by Papaefthimiou, V, Dintzer, T, Lebedeva, M, Teschner, D, Hävecker, M, Knop-Gericke, A, Schlögl, R, Pierron-Bohnes, V, Savinova, E, Zafeiratos, S

“…Our recent surface characterization studies of extended and nanosized PtCo alloys under hydrogen and oxygen atmospheres, indicated significant and reversible…”
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Catalytically active states of Ru(0001) catalyst in CO oxidation reaction by Blume, R., Hävecker, M., Zafeiratos, S., Teschner, D., Kleimenov, E., Knop-Gericke, A., Schlögl, R., Barinov, A., Dudin, P., Kiskinova, M.

“…Identifying the composition of the catalytically active state of metal catalysts under dynamic operating conditions is of particular importance for oxidation…”
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The effect of Mo oxides and TiO2 support on the chemisorption features of linearly adsorbed CO on Pt crystallites : an infrared and photoelectron spectroscopy study by ZAFEIRATOS, S, PAPAKONSTANTINOU, G, JACKSIC, M. M, NEOPHYTIDES, S. G

“…CO adsorption was studied on Pt and Pt x -Mo (x = 1, 4) catalysts supported on TiO2 by means of temperature-programmed desorption (TPD) and diffuse reflectance…”
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Bimetallic Nickel–Cobalt Nanosized Layers Supported on Polar ZnO Surfaces: Metal–Support Interaction and Alloy Effects Studied by Synchrotron Radiation X-ray Photoelectron Spectroscopy by Law, Y. T, Skála, T, Píš, I, Nehasil, V, Vondráček, M, Zafeiratos, S

“…The interaction of ultrathin bimetallic Ni–Co layers (0.25 and 1.5 nm) supported on polar (0001)Zn–ZnO and (0001̅)O–ZnO substrates was investigated by…”
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Effect of the Specific Surface Sites on the Reducibility of α‑Fe2O3/Graphene Composites by Hydrogen by Papaefthimiou, V, Florea, I, Baaziz, W, Janowska, I, Doh, W. H, Begin, D, Blume, R, Knop-Gericke, A, Ersen, O, Pham-Huu, C, Zafeiratos, S

“…The reducibility of iron oxide nanoparticles (NPs) supported over few-layer thick graphite upon annealing in hydrogen is investigated by near ambient pressure…”
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Partial pressure dependent in situ spectroscopic study on the preferential CO oxidation in hydrogen (PROX) over Pt/ceria catalysts by Teschner, D., Wootsch, A., Pozdnyakova-Tellinger, O., Kröhnert, J., Vass, E.M., Hävecker, M., Zafeiratos, S., Schnörch, P., Jentoft, P.C., Knop-Gericke, A., Schlögl, R.

“…Platinum supported on ceria can oxidize CO in excess hydrogen selectively (PROX process). In situ DRIFTS and high-pressure ( ∼ 1   mbar ) XPS experiments were…”
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Composite Hypo-Hyper-d-Intermetallic and Interionic Phases as Supported Interactive Electrocatalysts by Neophytides, S. G, Murase, K, Zafeiratos, S, Papakonstantinou, G, Paloukis, F. E, Krstajic, N. V, Jaksic, M. M

“…Interactive, strong interbonding and highly electron conductive nonstoichiometric titanium suboxide catalytic supports, Magneli phases (Ti n O2 n - 1, on…”
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Oxidation of methanol on Ru catalyst: Effect of the reagents partial pressures on the catalyst oxidation state and selectivity by Blume, R., Hävecker, M., Zafeiratos, S., Teschner, D., Knop-Gericke, A., Schlögl, R., Dudin, P., Barinov, A., Kiskinova, M.

“…In situ core level photoelectron spectroscopy and mass spectrometry have been utilized to study the methanol oxidation on a model RuO 2 catalyst at pressures…”
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A comparative in situ XPS study of PtRuCo catalyst in methanol steam reforming and water gas shift reactions by Zafeiratos, S., Paloukis, F., Papakonstantinou, G., Teschner, D., Hävecker, M., Vass, E., Schnörch, P., Knop-Gericke, A., Schlögl, R., Moreno, B., Chinarro, E., Jurado, J.R., Neophytides, S.G.

“…In the present study the oxidation state and the surface composition of a ternary PtRuCo catalyst were investigated under methanol steam reforming (SRM) and…”
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Structural effects on kinetic properties for hydrogen electrode reactions and CO tolerance along Mo–Pt phase diagram by Jaksic, J.M., Vracar, Lj, Neophytides, S.G., Zafeiratos, S., Papakonstantinou, G., Krstajic, N.V., Jaksic, M.M.

“…The effect of structural and surface versus bulk properties of Mo–Pt alloys and intermetallic phases taken along their phase diagram upon kinetic and…”
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A study of gold ultrathin film growth on yttria-stabilized ZrO2(100) by ZAFEIRATOS, S, KENNOU, S

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Extended Brewer hypo-hyper- d -interionic bonding theory II. Strong metal-support interaction grafting of composite electrocatalysts by Neophytides, S.G., Zafeiratos, S., Papakonstantinou, G.D., Jaksic, J.M., Paloukis, F.E., Jaksic, M.M.

“…The extended Brewer interactive interionic bonding theory ( EBIIBT) to show the equivalence of interatomic and interionic bonding features, as the prerequisite…”
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