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MMM 2022

November 07, 2022

Minneapolis, United States

Simple Synthesis of Magnetic Nanomaterials by Microfluidics Process

Magnetic nanomaterials such as magnetite (Fe3O4) are sought after for their promising applications in sensing, drug delivery, tissue engineering and are also used as contrast agents in magnetic resonance imaging 1 .Synthesis of these nanomaterials with good uniformity in size and shape is imperative for their use in different applications. Microfluidic-based synthesis in designed reactors is a new technology which controls the mixing of fluids within a fixed channel dimension (ranging from 10-100 μm), offers efficient mass transport in channels and also reduces reaction time.2,3 Herein, we present a new synthesis strategy which utilizes 3D-printing technique to develop a microfluidic device for synthesis of Fe3O4 nanoparticles by droplet-based method.4 The droplet-based method uses oil as a continuous medium which confines the reactants in a droplet, and each droplet functions as an individual reactor thereby providing high level of control on synthesis conditions. This strategy overcomes the limitations of conventional glassware-based synthesis such as polydispersity and batch-to-batch variability in nanoparticles. Enhanced magnetism and monodispersity in Fe3O4 nanoparticles were controlled by application of AC voltage across the electrodes placed beneath the reaction chamber of the device. The present device can be used for synthesing metal nanoparticles.

References References:

  1. A. H. Lu, E. Salabas, F. Schüth (2007) Magnetic nanoparticles: synthesis, protection, functionalization, and application. Angew. Chem. 119:1242-1266; Angew. Chem. Int. Ed. 46: 1222-1244
  2. G. M. Whitesides (2006) The origins and the future of microfluidics. Nature 442:368–373
  3. K. Ren, J. Zhou, H. Wu (2013) Materials for Microfluidic Chip Fabrication. Acc. Chem. Res. 46:2396–2406
  4. V. Singh, R. Singh (2022) Voltage-Driven Microfluidic Synthesis of Magnetite and Gold Nanomaterials. J Flow Chem. DOI: 10.1007/s41981-022-00231-3.

Next from MMM 2022

Dynamics of magnetic fluids and bidisperse magnetic systems undergoing oscillatory shear

Dynamics of magnetic fluids and bidisperse magnetic systems undergoing oscillatory shear

MMM 2022

Petr RyapolovEvgeniiy Sokolov
Evgeniiy Sokolov and 2 other authors

07 November 2022

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