Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Soeren Porsgaard"'
Autor:
Jan Knudsen, Stig Helveg, Stefan Wendt, Jacques Chevallier, Soeren Porsgaard, Flemming Besenbacher, Lindsay R. Merte, Helene Zeuthen, Luis K. Ono, Miquel Salmeron, Joachim Schnadt
Publikováno v:
Porsgaard, S, Ono, K, Zeuthen, H, Knudsen, J, Schnadt, J, Merte, L R, Chevallier, J, Wendt, S & Besenbacher, F 2013, ' In Situ Study of CO Oxidation on HOPG-Supported Pt Nanoparticles ', ChemPhysChem, vol. 14, no. 8, pp. 1553-1557 . https://doi.org/10.1002/cphc.201300217
An improved understanding of catalyzed reactions at anatomic level is of great importance for tailoring processes inthe chemical industry. Catalyzed reactions are typically con-ducted near or above atmospheric pressure and at elevatedtemperatures on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3a3f80e0d62b39b54315aba9b61fecc
https://doi.org/10.1002/cphc.201300217
https://doi.org/10.1002/cphc.201300217
Autor:
Flemming Besenbacher, Yinying Wei, Soeren Porsgaard, Bjørk Hammer, Umberto Martinez, Hicham Idriss, Lutz Lammich, Regine Bebensee, Stefan Wendt, Jonas Ø. Hansen, Estephania Lira, Zhongshan Li
Publikováno v:
Hansen, J Ø, Bebensee, R, Martinez, U, Porsgaard, S, Salazar, E L, Wei, Y, Lammich, L, Li, Z, Idriss, H, Besenbacher, F, Hammer, B & Wendt, S 2016, ' Unravelling site-specific photo-reactions of ethanol on rutile TiO2(110) ', Scientific Reports, vol. 6 . https://doi.org/10.1038/srep21990
Scientific Reports
Scientific Reports
Finding the active sites of catalysts and photo-catalysts is crucial for an improved fundamental understanding and the development of efficient catalytic systems. Here we have studied the photo-activated dehydrogenation of ethanol on reduced and oxid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7aeb2d1f7cae943137bf4ede8732ba58
Autor:
Stig Helveg, Mona C. R. Jensen, Ralf Bechstein, Soeren Porsgaard, Roman Wahl, Georg Kresse, Bjerne S. Clausen, Flemming Besenbacher, Kristoffer Meinander, Jeppe V. Lauritsen, Morten K. Rasmussen
Publikováno v:
Lauritsen, J V, Porsgaard, S, Rasmussen, M K, Jensen, M C R, Bechstein, R, Meinander, K, Clausen, B S, Helveg, S, Wahl, R, Kresse, G & Besenbacher, F 2011, ' Stabilization Principles for Polar Surfaces of ZnO ', ACS Nano . https://doi.org/10.1021/nn2017606
ZnO is a wide band gap metal oxide with a very interesting combination of semiconducting, transparent optical and catalytic properties. Recently, an amplified interest in ZnO has appeared due to the impressive progress made in nanofabrication of tail
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ec316205e96d1dab1688b49afefc7f5
https://doi.org/10.1021/nn2017606
https://doi.org/10.1021/nn2017606
Autor:
Flemming Besenbacher, Lindsay R. Merte, Jan Knudsen, Manos Mavrikakis, Soeren Porsgaard, Erik Lægsgaard, Falk M. Eichhorn, Lars C. Grabow, Ronnie T. Vang, Helene Zeuthen
Publikováno v:
Surface Science. 604:11-20
Using scanning tunneling microscopy (STM), X-ray photoemission spectroscopy (XPS) and density functional theory (DFT) calculations we have studied the reduction of ultra-thin films of FeO(1 1 1) grown on Pt(1 1 1) after exposure to atomic hydrogen at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13e82159f990a84a5a7bbe76e064c8d8
https://doi.org/10.1016/j.susc.2009.10.008
https://doi.org/10.1016/j.susc.2009.10.008
Autor:
Bjørk Hammer, Soeren Porsgaard, Anders Tuxen, Flemming Besenbacher, Henrik Goebel Füchtbauer, Albert Bruix, Alex S. Walton, Mie Andersen, Jeppe V. Lauritsen
Publikováno v:
Bruix, A, Fuchtbauer, H G, Tuxen, A K, Walton, A S, Andersen, M, Porsgaard, S, Besenbacher, F, Hammer, B & Lauritsen, J V 2015, ' In Situ Detection of Active Edge Sites in Single-Layer MoS 2 Catalysts ', A C S Nano, vol. 9, no. 9, pp. 9322-9330 . https://doi.org/10.1021/acsnano.5b03199
MoS2 nanoparticles are proven catalysts for processes such as hydrodesulfurization and hydrogen evolution, but unravelling their atomic-scale structure under catalytic working conditions has remained significantly challenging. Ambient pressure X-ray
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ce2aa4fb073ea474a9fbb995b75e2cd
Autor:
Soeren Porsgaard, Lisandro J. Giovanetti, Flemming Besenbacher, Miquel Salmeron, John T. Newberg, David Prendergast, Elzbieta Pach, Ferenc Borondics, Peng Jiang, Hendrik Bluhm
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Jiang, P, Prendergast, D, Borondics, F, Porsgaard, S, Giovanetti, L, Pach, E, Newberg, J, Bluhm, H, Besenbacher, F & Salmeron, M 2013, ' Experimental and theoretical investigation of the electronic structure of Cu2O and CuO thin films on Cu(110) using x-ray photoelectron and absorption spectroscopy ', Journal of Chemical Physics, vol. 138 . https://doi.org/10.1063/1.4773583
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Jiang, P, Prendergast, D, Borondics, F, Porsgaard, S, Giovanetti, L, Pach, E, Newberg, J, Bluhm, H, Besenbacher, F & Salmeron, M 2013, ' Experimental and theoretical investigation of the electronic structure of Cu2O and CuO thin films on Cu(110) using x-ray photoelectron and absorption spectroscopy ', Journal of Chemical Physics, vol. 138 . https://doi.org/10.1063/1.4773583
The electronic structure of Cu2O and CuO thin films grown on Cu(110) was characterized by X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS). The various oxidation states, Cu0, Cu+, and Cu2+, were unambiguously identified
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7c46a269305e6b2d22efb02a9013185
https://aip.scitation.org/doi/abs/10.1063/1.4773583
https://aip.scitation.org/doi/abs/10.1063/1.4773583
Autor:
Stig Helveg, Jeronimo Matos, Beatriz Roldan Cuenya, Luis K. Ono, Farzad Behafarid, Lindsay R. Merte, Flemming Besenbacher, Miquel Salmeron, Soeren Porsgaard
Publikováno v:
ACS Nano
Porsgaard, S, Merte, L R, Ono, L K, Behafarid, F, Matos, J, Helveg, S, Salmeron, M, Roldan Cuenya, B & Besenbacher, F 2012, ' Stability of platinum nanoparticles supported on SiO2/Si(111) : a high-pressure X-ray photoelectron spectroscopy study ', A C S Nano, vol. 6, no. 12, pp. 10743-9 . https://doi.org/10.1021/nn3040167
Porsgaard, S, Merte, L R, Ono, L K, Behafarid, F, Matos, J, Helveg, S, Salmeron, M, Roldan Cuenya, B & Besenbacher, F 2012, ' Stability of platinum nanoparticles supported on SiO2/Si(111) : a high-pressure X-ray photoelectron spectroscopy study ', A C S Nano, vol. 6, no. 12, pp. 10743-9 . https://doi.org/10.1021/nn3040167
The stability of Pt nanoparticles (NPs) supported on ultrathin SiO(2) films on Si(111) was investigated in situ under H(2) and O(2) (0.5 Torr) by high-pressure X-ray photoelectron spectroscopy (HP-XPS) and ex situ by atomic force microscopy (AFM). No
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::751ae75a1615f2f5a9c32afe93784e4c
https://pubmed.ncbi.nlm.nih.gov/23140267
https://pubmed.ncbi.nlm.nih.gov/23140267
Autor:
Jonas Ø. Hansen, Flemming Besenbacher, Yinying Wei, Stefan Wendt, Estephania Lira, Regine Streber, Felix Rieboldt, Peipei Huo, Zhongshan Li, Soeren Porsgaard, Erik Lægsgaard, Ralf Bechstein
Publikováno v:
Salazar, E L, Huo, P, Hansen, J Ø, Rieboldt, F, Bechstein, R, Wei, Y, Streber, R, Porsgaard, S, Li, Z, Lægsgaard, E, Wendt, S & Besenbacher, F 2012, ' Effects of the crystal reduction state on the interaction of oxygen with rutile Tio2(110) ', Catalysis Today, vol. 182, pp. 25 . https://doi.org/10.1016/j.cattod.2011.09.038
Catalysis Today
Catalysis Today
The interaction of O2 with reduced rutile TiO2(1 1 0)–(1 × 1) has been studied by means of scanning tunneling microscopy (STM), temperature-programmed desorption (TPD) and photoelectron spectroscopy (PES). It is found that the interaction of O2 wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32f5a371bd2bc86d2fe8670e35d31f58
https://pure.au.dk/portal/da/publications/effects-of-the-crystal-reduction-state-on-the-interaction-of-oxygen-with-rutile-tio2110(d8ac1d4e-664c-4f5e-88a8-4cffc19e2f8a).html
https://pure.au.dk/portal/da/publications/effects-of-the-crystal-reduction-state-on-the-interaction-of-oxygen-with-rutile-tio2110(d8ac1d4e-664c-4f5e-88a8-4cffc19e2f8a).html
Autor:
Hendrik Bluhm, Gordon E. Brown, John T. Newberg, Anders Nilsson, Erin R. Mysak, David E. Starr, Sarp Kaya, Susumu Yamamoto, Soeren Porsgaard, Miquel Salmeron, Tom Kendelewicz
Publikováno v:
Newberg, J T, Mysak, E R, Bluhm, H, Porsgaard, S, Salmeron, M B, Starr, D E, Yamamoto, S, Kaya, S, Brown, G E, Nilsson, A & Kendelewicz, T 2011, ' Autocatalytic surface hydroxylation of MgO(100) terrace sites observed under ambient conditions ', Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, vol. 115, no. 26, pp. 12864-12872 . https://doi.org/10.1021/jp200235v
We have investigated the reaction of water vapor with the MgO(100) surface using ambient pressure X-ray photoelectron spectroscopy (AP-XPS), which permits the study of the chemical composition of the MgO/water vapor interface at p(H2O) in the Torr ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb92473058abf206f3c0403a078a61f4
https://pure.au.dk/portal/da/publications/autocatalytic-surface-hydroxylation-of-mgo100-terrace-sites-observed-under-ambient-conditions(6049d365-851b-4573-93da-2e5bd5858271).html
https://pure.au.dk/portal/da/publications/autocatalytic-surface-hydroxylation-of-mgo100-terrace-sites-observed-under-ambient-conditions(6049d365-851b-4573-93da-2e5bd5858271).html
Autor:
Hendrik Bluhm, Jan Knudsen, Miquel Salmeron, Lars C. Grabow, Lindsay R. Merte, Erik Lægsgaard, Helene Zeuthen, Flemming Besenbacher, Falk M. Eichhorn, Manos Mavrikakis, Soeren Porsgaard
Publikováno v:
Journal of the American Chemical Society
Merte, L R, Knudsen, J, Eichhorn, F M, Porsgaard, S, Zeuthen, H, Grabow, L, Lægsgaard, E, Bluhm, H, Salmeron, M, Mavrikakis, M & Besenbacher, F 2011, ' CO-Induced Embedding of Pt Adatoms in a Partially Reduced FeO(x) Film on Pt(111) ', Journal of the American Chemical Society . https://doi.org/10.1021/ja2015923
Merte, L R, Knudsen, J, Eichhorn, F M, Porsgaard, S, Zeuthen, H, Grabow, L, Lægsgaard, E, Bluhm, H, Salmeron, M, Mavrikakis, M & Besenbacher, F 2011, ' CO-Induced Embedding of Pt Adatoms in a Partially Reduced FeO(x) Film on Pt(111) ', Journal of the American Chemical Society . https://doi.org/10.1021/ja2015923
The reduction of a single-layer FeO film grown on Pt(111) by CO at elevated pressures and temperatures has been studied through an interplay of scanning tunneling microscopy, ambient-pressure X-ray photoelectron spectroscopy, and density functional t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ebc1a30be01187969e2616bc5f60c17