Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Ulrich Hasse"'
Autor:
Ulrich Hasse, Andreas Bollmann, Heike Kahlert, Klaus Lücke, Katja Vahl, Fritz Scholz, Robert Smail Jack, Tyll Utesch
Publikováno v:
Gold Bulletin. 52:99-103
Metallic gold is not completely inert towards biological tissues and cells. Cytotoxicity and immunotoxicity are concerns in various gold applications. This study shows that treating the surface of gold with OH• radicals renders the gold surface non
Autor:
Manfred Zander, Harm Wulff, Fritz Scholz, Frank Frost, Paula Ahrens, Ulrich Hasse, Dietmar Hirsch
Publikováno v:
Journal of Electroanalytical Chemistry. 832:233-240
The effect of argon ion beam etching and subsequent annealing on the surface morphology and electrochemical response of poly- and monocrystalline gold electrodes was studied with the help of scanning electron microscopy, cyclic voltammetry and measur
Publikováno v:
Journal of Solid State Electrochemistry. 22:1149-1154
The impact of 1-decanethiol self-assembled monolayer (SAM) formation and removal cycles on polycrystalline Au surfaces and SAM quality was studied with the help of CV, DPV, Pb-UPD, STM, and AFM. The SAM removal was accomplished by dissolution with ox
Autor:
Ulrich Hasse, Fritz Scholz, Manfred Zander, Paula Ahrens, Angela Kruth, Chinnaya Jeyabharathi, Harm Wulff
Publikováno v:
ChemElectroChem. 5:943-957
Publikováno v:
Journal of Solid State Electrochemistry. 20:3025-3031
The electrochemical oxidation of single-crystal gold surfaces has been well studied, and the exposed crystal planes can be reliably distinguished based on the peak potentials of oxide formation. However, the multiple oxidation peaks of polycrystallin
Publikováno v:
Journal of Solid State Electrochemistry. 18:3299-3306
The oxygen reduction reaction (ORR) in acid media can be catalyzed on gold electrodes when the surface is activated by mechanical or electrochemical pretreatments. The activation is caused by increased surface roughness and defects, or asperities. Af
Publikováno v:
Journal of Solid State Electrochemistry. 17:3047-3053
Gold surfaces with a strongly preferential Au{100} orientation were prepared by annealing of commercial gold foil in an oven at temperatures between 400 and 900 °C. The annealing also led to an improved crystallinity and growth of grain size. A simi
Publikováno v:
Electrochemistry Communications, Vol 29, Iss, Pp 33-36 (2013)
Aryl layers on glassy carbon and gold electrodes were degraded by hydroxyl radicals from UV photolysis of hydrogen peroxide. The electrode surfaces were modified via electrochemical reduction of two structurally different azobenzene diazonium derivat
Publikováno v:
Journal of Electroanalytical Chemistry. 690:121-126
The electrochemical behavior of ethanethiol was studied on polycrystalline gold electrodes in alkaline solution. With the help of cyclic voltammetry, differential pulse voltammetry and ex-situ X-ray photoelectron spectroscopy it is possible to propos
Publikováno v:
Journal of Solid State Electrochemistry. 16:2383-2389
Annealed thin layers of gold with large mono-crystalline areas were treated with OH· radicals generated in an electrochemical Fenton reaction. The morphological changes observed with ex situ atomic force microscopy in non-contact mode and grazing in