| Differential magnetic catch and release: analysis and separation of magnetic nanoparticles. | |
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MedLine Citation:
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PMID: 19891452 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This article reports the purification and separation of magnetic nanoparticle mixtures using differential magnetic catch and release (DMCR). This method applies a variable magnetic flux orthogonal to the flow direction in an open tubular capillary to trap and controllably release magnetic nanoparticles. Magnetic moments of 8, 12, and 17 nm diameter CoFe2O4 nanoparticles are calculated using the applied magnetic flux and experimentally determined force required to trap 50% of the particle sample. Balancing the relative strengths of the drag and magnetic forces enables separation and purification of magnetic CoFe2O4 nanoparticle samples with <20 nm diameters. Samples were characterized by transmission electron microscopy to determine the average size and size dispersity of the sample population. DMCR is further demonstrated to be useful for separation of a magnetic nanoparticle mixture, resulting in samples with narrowed size distributions. |
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Authors:
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Jacob S Beveridge; Jason R Stephens; Andrew H Latham; Mary Elizabeth Williams |
Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Analytical chemistry Volume: 81 ISSN: 1520-6882 ISO Abbreviation: Anal. Chem. Publication Date: 2009 Dec |
Date Detail:
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Created Date: 2009-12-01 Completed Date: 2010-02-23 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370536 Medline TA: Anal Chem Country: United States |
Other Details:
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Languages: eng Pagination: 9618-24 Citation Subset: IM |
Affiliation:
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Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Cobalt
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chemistry* Complex Mixtures / analysis, chemistry, isolation & purification Ferrous Compounds / analysis*, chemistry, isolation & purification* Kinetics Magnetics* Nanoparticles / analysis*, chemistry Particle Size |
| Chemical | |
Reg. No./Substance:
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0/Complex Mixtures; 0/Ferrous Compounds; 7440-48-4/Cobalt |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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