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Titel: Long Alkyl Chain Organophosphorus Coupling Agents for in Situ Surface Functionalization by Reactive Milling
VerfasserIn: Betke, Annika
Kickelbick, Guido
Sprache: Englisch
Titel: Inorganics
Bandnummer: 2
Heft: 3
Startseite: 410
Endseite: 423
Verlag/Plattform: MDPI
Erscheinungsjahr: 2014
DDC-Sachgruppe: 540 Chemie
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: Innovative synthetic approaches should be simple and environmentally friendly. Here, we present the surface modification of inorganic submicrometer particles with long alkyl chain organophosphorus coupling agents without the need of a solvent, which makes the technique environmentally friendly. In addition, it is of great benefit to realize two goals in one step: size reduction and, simultaneously, surface functionalization. A top-down approach for the synthesis of metal oxide particles with in situ surface functionalization is used to modify titania with long alkyl chain organophosphorus coupling agents. A high energy planetary ball mill was used to perform reactive milling using titania as inorganic pigment and long alkyl chain organophosphorus coupling agents like dodecyl and octadecyl phosphonic acid. The final products were characterized by IR, NMR and X-ray fluorescence spectroscopy, thermal and elemental analysis as well as by X-ray powder diffraction and scanning electron microscopy. The process entailed a tribochemical phase transformation from the starting material anatase to a high-pressure modification of titania and the thermodynamically more stable rutile depending on the process parameters. Furthermore, the particles show sizes between 100 nm and 300 nm and a degree of surface coverage up to 0.8 mmol phosphonate per gram.
DOI der Erstveröffentlichung: 10.3390/inorganics2030410
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-274369
hdl:20.500.11880/28531
http://dx.doi.org/10.22028/D291-27436
ISSN: 2304-6740
Datum des Eintrags: 3-Jan-2020
Bezeichnung des in Beziehung stehenden Objekts: Supplementary Materials
In Beziehung stehendes Objekt: https://www.mdpi.com/2304-6740/2/3/410
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Chemie
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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