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Structural dependence of the efficiency of functionalization of silica-coated FeOx magnetic nanoparticles studied by ATR-IR by Angelo Vargas; Ivan Shnitko; Alexandra Teleki; Stephen Weyeneth; Sotiris E. Pratsinis; Alfons Baiker is a Materials Science article available to read on EtoBox.
What is Structural dependence of the efficiency of functionalization of silica-coated FeOx magnetic nanoparticles studied by ATR-IR about?
The efficiency of propylamino functionalization of magnetic silica-coated FeO x nanoparticles prepared by different methods, including coprecipitation and flame aerosol synthesis, has been evaluated by attenuated total reflection infrared spectroscopy (ATR-IR) combined with a specific surface reaction, thus revealing the availability of the grafted functional groups. Large differences in the population of reactive groups were observed for the investigated materials, underlining the tight relation between the structure of nanoparticles and their suitability for organic functionalization. The materials possessed different core structure, surface area, and porosity, as evidenced by transmission electron microscopy and nitrogen adsorption-desorption isotherms. Grafting of aminopropyl groups using a standard procedure based on reaction with (3-aminopropyl)trimethoxysilane as source of the propylamino groups was performed, followed by classical dry analysis methods to determine the specific concentration of the organic functional groups (in mmol g -1 of material). ATR-IR spectroscopy in a specially constructed reactor cell was applied as wet methodology to determine the chemically availa
Who reads Structural dependence of the efficiency of functionalization of silica-coated FeOx magnetic nanoparticles studied by ATR-IR?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Angelo Vargas; Ivan Shnitko; Alexandra Teleki; Stephen Weyeneth; Sotiris E. Pratsinis; Alfons Baiker
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0169-4332)
- Published
- 2011
- Language
- EN
- Field
- Materials Science (Physical Sciences)