U
Ulrich Hagemann
Researcher at University of Duisburg-Essen
Publications - 59
Citations - 973
Ulrich Hagemann is an academic researcher from University of Duisburg-Essen. The author has contributed to research in topics: Catalysis & Nanoparticle. The author has an hindex of 14, co-authored 47 publications receiving 617 citations. Previous affiliations of Ulrich Hagemann include Institute of Chartered Accountants of Nigeria & University of Duisburg.
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Journal ArticleDOI
In situ non-DLVO stabilization of surfactant-free, plasmonic gold nanoparticles: effect of Hofmeister's anions.
Vivian Merk,Christoph Rehbock,Felix Becker,Ulrich Hagemann,Hermann Nienhaus,Stephan Barcikowski +5 more
TL;DR: Quantification of surface charge density indicated that particle stabilization is dominated by ion adsorption and not by surface oxidation, which clearly demonstrate that stabilization of ligand-free gold nanoparticles scales proportionally with polarizability and antiproportionally with hydration of anion located at defined positions in a direct Hofmeister sequence of anions.
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Adjusting the catalytic properties of cobalt ferrite nanoparticles by pulsed laser fragmentation in water with defined energy dose
Friedrich Waag,Bilal Gökce,Chakrapani Kalapu,Georg Bendt,Soma Salamon,Joachim Landers,Ulrich Hagemann,Markus Heidelmann,Stephan Schulz,Heiko Wende,Nils Hartmann,Malte Behrens,Stephan Barcikowski +12 more
TL;DR: The results show that PLFL is a promising method that allows modification of the structural order in oxides and thus access to catalytically interesting materials.
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Direct self-assembly of Fe2O3/reduced graphene oxide nanocomposite for high-performance lithium-ion batteries
Lisong Xiao,Matthias Schroeder,Sebastian Kluge,Andrea Balducci,Ulrich Hagemann,Christof Schulz,Hartmut Wiggers +6 more
TL;DR: In this article, a self-assembly of oppositely charged Fe2O3 nanoparticles (NPs) and graphene oxide (GO) sheets, followed with a low-temperature hydrothermal reduction process, is described.
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3D atomic-scale imaging of mixed Co-Fe spinel oxide nanoparticles during oxygen evolution reaction
Weikai Xiang,Nating Yang,Xiaoming Li,Julia Linnemann,Ulrich Hagemann,O. Ruediger,Markus Heidelmann,T. Falk,Matteo Aramini,Serena DeBeer,Martin Muhler,Kristina Tschulik,Tong Li +12 more
TL;DR: In this article , the 3D structure of 10 nm sized Co2FeO4 and CoFe2O4 nanoparticles during oxygen evolution reaction (OER) was investigated.
Journal Article
Direct self-assembly of Fe₂O₃/reduced graphene oxide nanocomposite for high-performance lithium-ion batteries
Lisong Xiao,Matthias Schroeder,Sebastian Kluge,Andrea Balducci,Ulrich Hagemann,Christof Schulz,Hartmut Wiggers +6 more
TL;DR: In this paper, a self-assembly of oppositely charged Fe₂O₃ nanoparticles (NPs) and graphene oxide (GO) sheets was used to construct a low-temperature hydrothermal reduction process.