Magnetophoretic Capture of 5 nm sized Superparamagnetic Iron Oxide Nanoparticles Under Different Gradient Field Conditions

Bibliographic Details
Main Author:	Wu, Xian
Language:	English
Published:	The Ohio State University / OhioLINK 2020
Subjects:	Chemical Engineering
Online Access:	http://rave.ohiolink.edu/etdc/view?acc_num=osu1587651389722581

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spelling	ndltd-OhioLink-oai-etd.ohiolink.edu-osu15876513897225812021-08-03T07:14:40Z Magnetophoretic Capture of 5 nm sized Superparamagnetic Iron Oxide Nanoparticles Under Different Gradient Field Conditions Wu, Xian Chemical Engineering Superparamagnetic iron oxide nanoparticles (SPIONs) are widely employed in multiple fields, especially in medical and chemical engineering, due to their outstanding features. However, separation of SPIONS with sizes below of 20 nm is very challenging as the magnetophoretic motion is hindered by thermal energy and viscous drag. Recent studies have addressed the recovery of SPIONs by a combination of cooperative magnetophoresis and sedimentation. Nevertheless, the effect of horizontal, high fields and gradients on the vertical sedimentation of SPIONs has not been described. In this study, the magnetically facilitated sedimentation of 5 nm particles was reported by applying fields and gradients perpendicular to gravity. The magnetic field was generated by quadrupole magnetic sorters and the process was measured with time by tracking the concentration along the length of a channel contacting the 5 nm SPIONs within the quadrupole field. The experimental data suggest that aggregates of 60-90 particles are formed in the system; thus, particle agglomeration by dipole-dipole interactions was promoted, and these clusters settled down as a result of gravitational forces. Multiple variables and parameters were evaluated, including the initial SPION concentration, the temperature, the magnetic field and gradient and operation time. It was found that the process was improved by decreasing the initial concentration and the temperature, but the magnitude of the magnetic field and gradient did not significantly affect the sedimentation. Finally, the separation process was rapid, with the systems reaching the equilibrium in approximately 20 minutes, which is a significantly advantage in comparison to other systems that require longer times and larger particle sizes. 2020-10-08 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu1587651389722581 http://rave.ohiolink.edu/etdc/view?acc_num=osu1587651389722581 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection	NDLTD
language	English
sources	NDLTD
topic	Chemical Engineering
spellingShingle	Chemical Engineering Wu, Xian Magnetophoretic Capture of 5 nm sized Superparamagnetic Iron Oxide Nanoparticles Under Different Gradient Field Conditions
author	Wu, Xian
author_facet	Wu, Xian
author_sort	Wu, Xian
title	Magnetophoretic Capture of 5 nm sized Superparamagnetic Iron Oxide Nanoparticles Under Different Gradient Field Conditions
title_short	Magnetophoretic Capture of 5 nm sized Superparamagnetic Iron Oxide Nanoparticles Under Different Gradient Field Conditions
title_full	Magnetophoretic Capture of 5 nm sized Superparamagnetic Iron Oxide Nanoparticles Under Different Gradient Field Conditions
title_fullStr	Magnetophoretic Capture of 5 nm sized Superparamagnetic Iron Oxide Nanoparticles Under Different Gradient Field Conditions
title_full_unstemmed	Magnetophoretic Capture of 5 nm sized Superparamagnetic Iron Oxide Nanoparticles Under Different Gradient Field Conditions
title_sort	magnetophoretic capture of 5 nm sized superparamagnetic iron oxide nanoparticles under different gradient field conditions
publisher	The Ohio State University / OhioLINK
publishDate	2020
url	http://rave.ohiolink.edu/etdc/view?acc_num=osu1587651389722581
work_keys_str_mv	AT wuxian magnetophoreticcaptureof5nmsizedsuperparamagneticironoxidenanoparticlesunderdifferentgradientfieldconditions
_version_	1719457237527691264

Magnetophoretic Capture of 5 nm sized Superparamagnetic Iron Oxide Nanoparticles Under Different Gradient Field Conditions

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