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Auflistung nach Autor "Krahl, Thoralf"
Anzeige der Publikationen 1-5 von 5
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2005-11-04DissertationAmorphes Aluminiumchlorofluorid und -bromofluorid - die stärksten bekannten festen Lewis-Säuren Krahl, ThoralfDie feste nichtkristalline Lewis-Säure Aluminiumchlorofluorid (ACF, AlCl(x)F(3-x), x = 0.05 .. 0.3) hat die höchste bisher bekannte Lewis-Acidität aller heterogenen Katalysatoren. Sie erreicht die Stärke von Antimonpentafluorid ...
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2021-02-08ZeitschriftenartikelChemical in‐depth analysis of (Ca/Sr)F2 core–shell like nanoparticles by X‐ray photoelectron spectroscopy with tunable excitation energy Müller, Anja; Krahl, Thoralf; Radnik, Joerg; Wagner, Andreas; Kreyenschulte, Carsten; Werner, Wolfgang S.M.; Ritter, Benjamin; Kemnitz, Erhard; Unger, WolfgangThe fluorolytic sol–gel synthesis is applied with the intention to obtain two different types of core–shell nanoparticles, namely, SrF2–CaF2 and CaF2–SrF2. In two separate fluorination steps for core and shell formation, ...
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2021-09-12ZeitschriftenartikelLocal Structure of Europium‐Doped Luminescent Strontium Fluoride Nanoparticles: Comparative X‐ray Absorption Spectroscopy and Diffraction Study Yusenko, Kirill; Kabelitz, Anke; Schökel, Alexander; Wagner, Ralph; Prinz, Carsten; Kemnitz, Erhard; Emmerling, Franziska; Krahl, Thoralf; Guilherme Buzanich, AnaRare‐earth based luminescent materials are key functional components for the rational design of light‐conversion smart devices. Stable Eu3+‐doped strontium fluoride (SrF2) nanoparticles were prepared at room temperature ...
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2020-07-14ZeitschriftenartikelNano metal fluorides: small particles with great properties Kemnitz, Erhard; Mahn, Stefan; Krahl, ThoralfThe recently developed fluorolytic sol–gel route to metal fluorides opens a very broad range of both scientific and technical applications of the accessible high surface area metal fluorides, many of which have already ...
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2020-04-08ZeitschriftenartikelToward Luminescent Composites by Phase Transfer of SrF2:Eu3+ Nanoparticles Capped with Hydrophobic Antenna Ligands Krahl, Thoralf; Beer, Fabian; Relling, Alexander; Gawlitza, Kornelia; Rurack, Knut; Kemnitz, ErhardTransparent dispersions of hydrophobic SrF2 : Eu3+ nanoparticles in cyclohexane with up to 20% europium were obtained by fluorolytic sol‐gel synthesis followed by phase transfer into cyclohexane through capping with sodium ...