Volume 39, Issue 11 pp. 2051-2058
Research Article

Continuous-Flow Synthesis and Functionalization of Magnetite: Intensified Process for Tailored Nanoparticles

Franz Haseidl

Franz Haseidl

Technische Universität München, Department of Chemistry, Garching b. München, Germany.

Technische Universität München, Catalysis Research Center, Garching b. München, Germany.

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Barbara Müller

Barbara Müller

Technische Universität München, Department of Chemistry, Garching b. München, Germany.

Technische Universität München, Catalysis Research Center, Garching b. München, Germany.

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Olaf Hinrichsen

Corresponding Author

Olaf Hinrichsen

Technische Universität München, Department of Chemistry, Garching b. München, Germany.

Technische Universität München, Catalysis Research Center, Garching b. München, Germany.

Technische Universität München, Department of Chemistry, Garching b. München, Germany.Search for more papers by this author
First published: 10 August 2016
Citations: 12

Abstract

The spinning disc reactor (SDR) is used for the size-selective synthesis and functionalization of nanoscale superparamagnetic iron oxide particles in a single-step continuous-flow process. Nanometer-sized magnetite (Fe3O4) particles are precipitated in a highly sheared thin liquid film on a rapidly rotating disc. A novel liquid-liquid synthesis is presented whereas control over particle size is reached via adjustable micromixing properties on the disc. The nanoparticles with tailored size, narrow size distribution, and high saturation magnetization can thus meet the special requirements for the use in biotechnological, medical, and catalytic applications. The functionalization of the particles with oleic acid for higher biocompatibility and better dispersibility is accomplished in the SDR in a single step.

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