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Title: Air- and Water-Resistant Noble Metal Coated Ferromagnetic Cobalt Nanorods

Abstract

Cobalt nanorods possess ideal magnetic properties for applications requiring magnetically hard nanoparticles. However, their exploitation is undermined by their sensitivity toward oxygen and water, which deteriorates their magnetic properties. The development of a continuous metal shell inert to oxidation could render them stable, opening perspectives not only for already identified applications but also for uses in which contact with air and/or aqueous media is inevitable. However, the direct growth of a conformal noble metal shell on magnetic metals is a challenge. Here, we show that prior treatment of Co nanorods with a tin coordination compound is the crucial step that enables the subsequent growth of a continuous noble metal shell on their surface, rendering,them air- and water-resistant, while conserving the monocrystallity, metallicity and the Magnetic properties of the Co core. Thus, the as-synthesized tore shell ferromagnetic nanorods combine high;Magnetization and strong uniaxial Magnetic anisotropy, even after exposure to air and water, and hold promise for successful implementation in in vitro biodiagnostics requiring probes Of high magnetization and anisotropic shape.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
Universite de Technologie de Troyes; University of Antwerp; Argonne National Laboratory - Chemical Sciences and Engineering Division; Austrian Institute of Technology
OSTI Identifier:
1390799
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
ACS Nano
Additional Journal Information:
Journal Volume: 9; Journal Issue: 3; Journal ID: ISSN 1936-0851
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
Air- and Water-Resistant Noble Metal Coated Ferromagnetic Cobalt Nanorods

Citation Formats

Lentijo-Mozo, Sergio, Tan, Reasmey P., Garcia-Marcelot, Cécile, Altantzis, Thomas, Fazzini, Pier-Francesco, Hungria, Teresa, Cormary, Benoit, Gallagher, James R., Miller, Jeffrey T., Martinez, Herve, Schrittwieser, Stefan, Schotter, Joerg, Respaud, Marc, Bals, Sara, Tendeloo, Gustaaf Van, Gatel, Christophe, and Soulantica, Katerina. Air- and Water-Resistant Noble Metal Coated Ferromagnetic Cobalt Nanorods. United States: N. p., 2015. Web. doi:10.1021/nn506709k.
Lentijo-Mozo, Sergio, Tan, Reasmey P., Garcia-Marcelot, Cécile, Altantzis, Thomas, Fazzini, Pier-Francesco, Hungria, Teresa, Cormary, Benoit, Gallagher, James R., Miller, Jeffrey T., Martinez, Herve, Schrittwieser, Stefan, Schotter, Joerg, Respaud, Marc, Bals, Sara, Tendeloo, Gustaaf Van, Gatel, Christophe, & Soulantica, Katerina. Air- and Water-Resistant Noble Metal Coated Ferromagnetic Cobalt Nanorods. United States. https://doi.org/10.1021/nn506709k
Lentijo-Mozo, Sergio, Tan, Reasmey P., Garcia-Marcelot, Cécile, Altantzis, Thomas, Fazzini, Pier-Francesco, Hungria, Teresa, Cormary, Benoit, Gallagher, James R., Miller, Jeffrey T., Martinez, Herve, Schrittwieser, Stefan, Schotter, Joerg, Respaud, Marc, Bals, Sara, Tendeloo, Gustaaf Van, Gatel, Christophe, and Soulantica, Katerina. 2015. "Air- and Water-Resistant Noble Metal Coated Ferromagnetic Cobalt Nanorods". United States. https://doi.org/10.1021/nn506709k.
@article{osti_1390799,
title = {Air- and Water-Resistant Noble Metal Coated Ferromagnetic Cobalt Nanorods},
author = {Lentijo-Mozo, Sergio and Tan, Reasmey P. and Garcia-Marcelot, Cécile and Altantzis, Thomas and Fazzini, Pier-Francesco and Hungria, Teresa and Cormary, Benoit and Gallagher, James R. and Miller, Jeffrey T. and Martinez, Herve and Schrittwieser, Stefan and Schotter, Joerg and Respaud, Marc and Bals, Sara and Tendeloo, Gustaaf Van and Gatel, Christophe and Soulantica, Katerina},
abstractNote = {Cobalt nanorods possess ideal magnetic properties for applications requiring magnetically hard nanoparticles. However, their exploitation is undermined by their sensitivity toward oxygen and water, which deteriorates their magnetic properties. The development of a continuous metal shell inert to oxidation could render them stable, opening perspectives not only for already identified applications but also for uses in which contact with air and/or aqueous media is inevitable. However, the direct growth of a conformal noble metal shell on magnetic metals is a challenge. Here, we show that prior treatment of Co nanorods with a tin coordination compound is the crucial step that enables the subsequent growth of a continuous noble metal shell on their surface, rendering,them air- and water-resistant, while conserving the monocrystallity, metallicity and the Magnetic properties of the Co core. Thus, the as-synthesized tore shell ferromagnetic nanorods combine high;Magnetization and strong uniaxial Magnetic anisotropy, even after exposure to air and water, and hold promise for successful implementation in in vitro biodiagnostics requiring probes Of high magnetization and anisotropic shape.},
doi = {10.1021/nn506709k},
url = {https://www.osti.gov/biblio/1390799}, journal = {ACS Nano},
issn = {1936-0851},
number = 3,
volume = 9,
place = {United States},
year = {Tue Mar 24 00:00:00 EDT 2015},
month = {Tue Mar 24 00:00:00 EDT 2015}
}

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