Correlating STM contrast and atomic-scale structure by chemical modification: Vacancy dislocation loops on FeO/Pt(111)

Autor: Lars C. Grabow, Flemming Besenbacher, Lindsay R. Merte, Ronnie T. Vang, Jan Knudsen, Erik Lægsgaard, Manos Mavrikakis

Publikováno v: Merte, L R, Knudsen, J, Grabow, L C, Vang, R T, Lægsgaard, E, Mavrikakis, M & Besenbacher, F 2009, ' Correlating STM contrast and atomic-scale structure by chemical modification: Vacancy dislocation loops on FeO/Pt(111) ', Surface Science, vol. 603, pp. L15-L18 . https://doi.org/10.1016/j.susc.2008.11.014

By chemically modifying the FeO(1 1 1) thin film on Pt(1 1 1), we show that it is possible to unambiguously correlate its STM morphology with its underlying structure without recourse to STM simulations. Partial reduction of the oxide surface leads t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6a8acbfbd644a39bfb2229d8be5b483
https://doi.org/10.1016/j.susc.2008.11.014

Bridging the pressure gap in model systems for heterogeneous catalysis with high-pressure scanning tunneling microscopy

Autor: Erik Lægsgaard, Flemming Besenbacher, Ronnie T. Vang

Publikováno v: Vang, R T, Lægsgaard, E & Besenbacher, F 2007, ' Bridging the pressure gap in model systems for heterogeneous catalysis with high-pressure scanning tunneling microscopy ', Physical Chemistry Chemical Physics .

A high-pressure scanning tunneling microscope (HP-STM) enabling imaging with atomic resolution over the entire pressure range from ultrahigh vacuum (UHV) to one bar has been developed. By means of this HP-STM we have studied the adsorption of hydroge

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04896358e9a6d75fbc955a5e628a4fa2
https://doi.org/10.1039/b703328c

CO Desorption Rate Dependence on CO Partial Pressure over Platinum Fuel Cell Catalysts

Autor: Joachim Schnadt, Zbigniew Lodziana, Bjørk Hammer, Ashildur Logadottir, Lasse Bjørchmar Thomsen, Rasmus Munksgård Nielsen, Jens K. Nørskov, Flemming Besenbacher, Ib Chorkendorff, Ronnie T. Vang, S.R. Longwitz, Ebbe K. Vestergaard, J.C. Davies, Wei-Xue Li

Publikováno v: Fuel Cells. 4:309-319

Carbon monoxide adsorption on high area platinum fuel cell catalysts was investigated. Isotopic exchange experiments were performed to determine the exchange rate (k) of CO under different partial pressures of CO (p co) in argon. A linear dependence

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7a34aa9d4b646cfd5d677c5708175f97
https://doi.org/10.1002/fuce.200400046

Rapid Synthesis of Porous, Mixed Phase Titania Films with Tailored Orientation of Rutile for Enhanced Photocatalytic Performance

Autor: Flemming Besenbacher, Anders Palmqvist, Mogens Christensen, Björn Neo Esbjörnsson Elgh, Ronnie T. Vang, Ralf Bechstein, Stefan Wendt, Yanbin Shen, Ren Su, Bo B. Iversen, Jakob Kibsgaard

Publikováno v: Su, R, Christensen, M, Shen, Y, Kibsgaard, J, Elgh, B, Vang, R T, Bechstein, R, Wendt, S, Palmqvist, A, Iversen, B B & Besenbacher, F 2013, ' Rapid Synthesis of Porous, Mixed Phase Titania Films with Tailored Orientation of Rutile for Enhanced Photocatalytic Performance ', The Journal of Physical Chemistry Part C, vol. 117, no. 51, pp. 27039-27046 . https://doi.org/10.1021/jp4106713

We report on a new, one-step electrochemical oxidation method for the rapid synthesis of mixed phase, polycrystalline TiO2 porous films with oriented rutile within a few minutes. The orientation as well as the surface chemical composition of rutile n

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https://pure.au.dk/portal/da/publications/rapid-synthesis-of-porous-mixed-phase-titania-films-with-tailored-orientation-of-rutile-for-enhanced-photocatalytic-performance(58c18e10-571e-4150-93fe-16ae7958a352).html

How the Anatase-to-Rutile Ratio Influences the Photoreactivity of TiO2

Autor: Björn Esbjörnsson, M. Sillassen, Ren Su, Ralf Bechstein, Ronnie T. Vang, Anders Palmqvist, Flemming Besenbacher, Lasse Sø

Publikováno v: Su, R, Bechstein, R, Sø, L, Vang, R T, Sillassen, M B, Esbjørnsson, B, Palmqvist, A & Besenbacher, F 2011, ' How the Anatase-to-Rutile Ratio Influences the Photoreactivity of TiO(2) ', Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, bind 115, nr. 49 . https://doi.org/10.1021/jp2086768

In 1991, Bickley et al. proposed a synergetic effect between anatase and rutile in Degussa P25. Since then, there has been an intensive debate about the correctness of this proposal, the origin of the synergism, and the right polymorph composition. H

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdeb5061b47151a8f8ce62f841f74915
https://doi.org/10.1021/jp2086768