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						<h1 itemprop="headline">Distinguished iNANO Lecture: Reactions on the Rutile TiO2(110) Surface Studied by High-Resolution STM and TPD</h1>
						
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							<p class="text--intro" itemprop="description">Senior researcher Stefan Wendt, Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark</p>
						
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														Friday 21  February 2014,
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														&nbsp;at 10:15 -  11:00
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														<p>The auditorium of the iNANO House, Gustav Wieds Vej 14, 8000 Aarhus C</p>
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														<span itemprop="name">Trine Møller Hansen</span>
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									<table cellpadding="2" cellspacing="2" class="contenttable"> <tbody> <tr> <td>&nbsp;</td> <td> <h2><a href="http://pure.au.dk/portal/en/persons/id(38065aec-8b5c-4989-a714-fe9622047009).html" target="_self" data-htmlarea-external="1">Senior researcher Stefan Wendt, Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark</a></h2> <h3><em><strong>Reactions on the Rutile TiO2(110) Surface Studied by High-Resolution STM and TPD</strong></em></h3> <p>In this lecture, I will summarize surface science studies addressing a prototypical model oxide system – the rutile TiO<sub>2</sub>(110)–(1 <strong>×</strong> 1) surface. The identification of point defects on the terraces such as oxygen vacancies, hydroxyl groups, and near surface defect such as Ti interstitials will be discussed. Using high-resolution scanning tunnelling microscopy (STM) several examples for the reaction of water and ethanol molecules with oxygen vacancies will be presented [1]. These reactions have been directly imaged in so-called STM movies. Whereas the reactions on the terraces can be imaged directly, a combination of static STM results with temperature-programmed desorption/reaction (TPD/TPR) measurements has been utilized to study the reactions at step edges, with the focus particularly on the &lt;1-11&gt; step edges [2]. In addition, I will address the complex oxygen–TiO<sub>2</sub>(110) interaction, which is related to processes occurring on the terraces and in the bulk [3,4]. Finally, I will compare the photo-reaction of ethanol on differently prepared TiO<sub>2</sub>(110) surfaces.</p> <p>[1] J. Ø. Hansen, P. Huo, U. Martinez, E. Lira, Y.Y. Wei, R. Streber, E. Lægsgaard, B. Hammer, S. Wendt, F. Besenbacher, Phys. Rev. Lett. <strong>107</strong>, 136102 (2011).</p> <p>[2] U. Martinez, J. Ø. Hansen, E. Lira, H. H. Kristoffersen, P. Huo, R. Bechstein, E. Lægsgaard, F. Besenbacher, B. Hammer, S. Wendt, Phys. Rev. Lett. <strong>109</strong>, 155501 (2012).</p> <p>[3] S. Wendt, P. T. Sprunger, E. Lira, G. K. H. Madsen, Z. Li, J. Ø. Hansen, J. Matthiesen, A. Blekinge-Rasmussen, E. Lægsgaard, B. Hammer, F. Besenbacher, Science <strong>320</strong>, 1755 (2008).</p> <p>[4] E. Lira, J. Ø. Hansen, P. Huo, R. Bechstein, P. Galliker, E. Lægsgaard, B. Hammer, S. Wendt, F. Besenbacher, Surf. Sci. <strong>604</strong>, 1945 (2010).</p> <p><strong>Host:</strong> Director &amp; professor Jørgen Kjems, iNANO &amp; Department of Molecular Biology and Genetics</p> </td> </tr> <tr> <td>&nbsp;</td> <td><strong>Coffee, tea and bread will be served in front of the iNANO auditorium from 10:00.</strong></td> </tr> </tbody> </table>
								
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