Continuous‐Flow Synthesis and Functionalization of Magnetite: Intensified Process for Tailored Nanoparticles. Issue 11 (7th October 2016)

• Record Type: Journal Article
• Authors: Haseidl, Franz; Müller, Barbara; Hinrichsen, Olaf
• Other Names: Hinrichsen Kai‐Olaf sponsoringEditor.; Klemm Elias sponsoringEditor.
• Is Part Of: Chemical engineering & technology. Volume 39:Issue 11(2016:Nov.)
• Page Start: 2051
• Page End: 2058
• Publication Date: 2016-10-07
• Subjects: Controlled mixing -- Liquid‐liquid synthesis -- Magnetite nanoparticles -- Process intensification -- Spinning disc reactor; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201600163
• Languages: English
• ISSNs: 0930-7516

Abstract

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 (Fe3 O4 ) 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. Abstract : A continuous‐flow process for tailored nanoparticles is established on a spinning disc reactor. Control over the particle properties, surface functionalization in a single step, and the absence of hazardous chemicals make this process especially reliable, efficient, and clean. Narrow particle size distributions along with high magnetizabilities qualify the ferrofluids for numerous applications.