Laser-Ablated Vortex Fluidic-Mediated Synthesis of Superparamagnetic Magnetite Nanoparticles in Water Under Flow

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Date
2018-09-14
Authors
Luo, Xuan
Al-Antaki, Ahmed H M
Alharbi, Thaar M D
Hutchison, Wayne D
Zou, Yi-chao
Zou, Jin
Sheehan, Antony
Zhang, Wei
Raston, Colin L
Journal Title
Journal ISSN
Volume Title
Publisher
ACS Publications
Abstract
Selective formation of only one iron oxide phase is a major challenge in conventional laser ablation process, as is scaling up the process. Herein, superparamagnetic single-phase magnetite nanoparticles of hexagonal and spheroidal-shape, with an average size of ca. 15 nm, are generated by laser ablation of bulk iron metal at 1064 nm in a vortex fluidic device (VFD). This is a one-step continuous flow process, in air at ambient pressure, with in situ uptake of the nanoparticles in the dynamic thin film of water in the VFD. The process minimizes the generation of waste by avoiding the need for any chemicals or surfactants and avoids time-consuming purification steps in reducing any negative impact of the processing on the environment.
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ACS AuthorChoice - This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes
Keywords
magnetic materials, nanoparticles, paramagnetism, surface treatment
Citation
Luo, X., Al-Antaki, A. H. M., Alharbi, T. M. D. et al., (2018). Laser-Ablated Vortex Fluidic-Mediated Synthesis of Superparamagnetic Magnetite Nanoparticles in Water Under Flow. ACS Omega, 3(9), 11172-11178.