Search Results - "Birkner, Alexander"

Probing the Mechanism of Low-Temperature CO Oxidation on Au/ZnO Catalysts by Vibrational Spectroscopy by Noei, Heshmat, Birkner, Alexander, Merz, Klaus, Muhler, Martin, Wang, Yuemin

“…Adsorption and oxidation of CO on Au/ZnO catalysts were studied by Fourier transform infrared (FTIR) spectroscopy using a novel ultra-high-vacuum (UHV) system…”
Get full text

The Ammonia-Synthesis Catalyst of the Next Generation: Barium-Promoted Oxide-Supported Ruthenium by Bielawa, Hubert, Hinrichsen, Olaf, Birkner, Alexander, Muhler, Martin

“…A high potential to save energy in the production of ammonia is possible with the ruthenium catalysts developed by a knowledge‐based approach using a parallel…”
Get full text

Sonochemical preparation of TiO2 nanoparticles in the ionic liquid 1-(3-hydroxypropyl)-3-methylimidazolium-bis(trifluoromethylsulfonyl)amide by Alammar, Tarek, Birkner, Alexander, Shekhah, Osama, Mudring, Anja-Verena

Get full text

Coexistence of Different Structural Phases in Thioaromatic Monolayers on Au(111) by Azzam, Waleed, Fuxen, Claus, Birkner, Alexander, Rong, Hai-Tao, Buck, Manfred, Wöll, Christof

“…Self-assembled monolayers formed by adsorption of 4-methyl-4‘-mercaptobiphenyl, CH3-(C6H4)2−SH (BPT), on Au(111) have been studied using scanning tunneling…”
Get full text

Chemical Vapor Deposition and Synthesis on Carbon Nanofibers:  Sintering of Ferrocene-Derived Supported Iron Nanoparticles and the Catalytic Growth of Secondary Carbon Nanofibers by Xia, Wei, Su, Dangsheng, Birkner, Alexander, Ruppel, Lars, Wang, Yuemin, Wöll, Christof, Qian, Jun, Liang, Changhai, Marginean, Gabriela, Brandl, Waltraut, Muhler, Martin

“…The synthesis of homogeneously distributed carbon nanofibers with well-defined morphology on vapor-grown carbon nanofibers was achieved by a sequence of…”
Get full text

Fabrication of free-standing ultrathin films of porous metal-organic frameworks by liquid-phase epitaxy and subsequent delamination by Darbandi, Masih, Arslan, Hasan K., Shekhah, Osama, Bashir, Asif, Birkner, Alexander, Wöll, Christof

“…In this work we describe an approach to fabricate MOF (metal‐organic framework) platelets with predefined shapes and well‐defined thicknesses. The process is…”
Get full text

Template-Mediated Synthesis of Polycyclic Aromatic Hydrocarbons: Cyclodehydrogenation and Planarization of a Hexaphenylbenzene Derivative at a Copper Surface by Weiss, Klaus, Beernink, Gunda, Dötz, Florian, Birkner, Alexander, Müllen, Klaus, Wöll, Christof H.

“…The deposition of polycyclic aromatic hydrocarbons on substrate surfaces is a key step for using such disklike molecules in nanoelectronic devices. An…”
Get full text

Chemical Activity of Thin Oxide Layers: Strong Interactions with the Support Yield a New Thin-Film Phase of ZnO by Schott, Vadim, Oberhofer, Harald, Birkner, Alexander, Xu, Mingchun, Wang, Yuemin, Muhler, Martin, Reuter, Karsten, Wöll, Christof

“…Influential support: Metal substrates affect the chemical properties of ZnO layers, which are important catalyst materials for the industrial production of…”
Get full text

Silicium Dioxide Nanoparticles As Carriers for Photoactivatable CO-Releasing Molecules (PhotoCORMs) by Dördelmann, Gregor, Pfeiffer, Hendrik, Birkner, Alexander, Schatzschneider, Ulrich

“…Silicium dioxide nanoparticles of about 20 nm diameter containing azido groups at the surface were prepared by emulsion copolymerization of…”
Get full text

Stabilizer-Free Metal Nanoparticles and Metal-Metal Oxide Nanocomposites with Long-Term Stability Prepared by Physical Vapor Deposition into Ionic Liquids by Richter, Kai, Birkner, Alexander, Mudring, Anja-Verena

“…Easy peasy: Physical vapor deposition by substrate evaporation into ionic liquids is a simple, clean, and facile way to prepare metal and metal–metal oxide…”
Get full text

Corrigendum: Chemical Activity of Thin Oxide Layers: Strong Interactions with the Support Yield a New Thin‐Film Phase of ZnO by Schott, Vadim, Oberhofer, Harald, Birkner, Alexander, Xu, Mingchun, Wang, Yuemin, Muhler, Martin, Reuter, Karsten, Wöll, Christof

Get full text

Absence of template induced ordering in organic multilayers: The growth of pentacene on a Cu(221) vicinal surface by Götzen, Jan, Lukas, Simon, Birkner, Alexander, Witte, Gregor

“…The structure and morphology of pentacene films grown on a Cu(221) vicinal surface have been studied by means of scanning tunneling microscopy (STM), low…”
Get full text

Synthesis, Structure, and Sensor Properties of Vanadium Pentoxide Nanorods by Grigorieva, Anastasia V., Badalyan, Siranuysh M., Goodilin, Eugene A., Rumyantseva, Marina N., Gaskov, Alexander M., Birkner, Alexander, Tretyakov, Yuri D.

“…Vanadium oxide nanorods were prepared by a hydrothermal route and then tested as a transducer for a resistive‐type gas sensor. The importance of control of pH…”
Get full text

Ultrasound-Assisted Synthesis of CuO Nanorods in a Neat Room-Temperature Ionic Liquid by Alammar, Tarek, Birkner, Alexander, Mudring, Anja-Verena

“…CuO nanorods were prepared via ultrasound‐assisted synthesis in the room temperature ionic liquid (RTIL)…”
Get full text

Visualization and functions of surface defects on carbon nanotubes created by catalytic etching by Xia, Wei, Yin, Xiuli, Kundu, Shankhamala, Sánchez, Miguel, Birkner, Alexander, Wöll, Christof, Muhler, Martin

“…[Display omitted] ► Created surface defects on carbon nanotubes visualized by STM. ► Oxygen anchored on etched CNTs more stable as indicated by…”
Get full text

Pyridyl-substituted porphyrins on palladium nanoparticles by Mayer-Gall, Thomas, Birkner, Alexander, Dyker, Gerald

“…Central versus peripheric: the binding mode of pyridylporphyrins strongly influences particle agglomeration and solubility. The influence of…”
Get full text

Berichtigung: Chemische Aktivität von dünnen Oxidschichten: Starke Träger‐ Wechselwirkungen ergeben eine neue ZnO‐Dünnfilmphase by Schott, Vadim, Oberhofer, Harald, Birkner, Alexander, Xu, Mingchun, Wang, Yuemin, Muhler, Martin, Reuter, Karsten, Wöll, Christof

Get full text

On the Nature of the Active State of Supported Ruthenium Catalysts Used for the Oxidation of Carbon Monoxide:  Steady-State and Transient Kinetics Combined with in Situ Infrared Spectroscopy by Assmann, Jens, Narkhede, Vijay, Khodeir, Lamma, Löffler, Elke, Hinrichsen, Olaf, Birkner, Alexander, Over, Herbert, Muhler, Martin

“…The oxidation of CO over Ru/MgO and Ru/SiO2 catalysts was used as a simple model reaction to derive turnover frequencies at atmospheric pressure, which were…”
Get full text

Sonochemical preparation of TiO 2 nanoparticles in the ionic liquid 1-(3-hydroxypropyl)-3-methylimidazolium-bis(trifluoromethylsulfonyl)amide by Alammar, Tarek, Birkner, Alexander, Shekhah, Osama, Mudring, Anja-Verena

“…Spherical shaped anatase nanoparticles ( ø 5 nm) have been synthesized in the ionic liquid…”
Get full text

The thermally induced interaction of Cu and Au with ZnO single crystal surfaces by Köhler, Ulrich, Kroll, Martin, Löber, Thomas, Birkner, Alexander, Schott, Vadim, Wöll, Christof

“…The reaction of Cu‐clusters with a polar and a mixed terminated single crystalline ZnO‐substrate upon thermal treatment in UHV is studied in comparison with…”
Get full text