• Login
    View Item 
    •   Home
    • Research
    • Articles
    • View Item
    •   Home
    • Research
    • Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguidePlumX LibguideSubmit an Item

    Statistics

    Display statistics

    Unexpected Insights about Cation-Exchange on Metal Oxide Nanoparticles and Its Effect on Their Magnetic Behavior

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    acs.chemmater.8b04331.pdf
    Size:
    5.205Mb
    Format:
    PDF
    Description:
    Published version
    Download
    Thumbnail
    Name:
    cm8b04331_si_001.pdf
    Size:
    13.29Mb
    Format:
    PDF
    Description:
    Supplemental files
    Download
    Type
    Article
    Authors
    Lentijo Mozo, Sergio
    Deiana, Davide
    Sogne, Elisa cc
    Casu, Alberto
    Falqui, Andrea cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Bioscience Program
    Date
    2018-10-22
    Online Publication Date
    2018-10-22
    Print Publication Date
    2018-11-13
    Permanent link to this record
    http://hdl.handle.net/10754/630189
    
    Metadata
    Show full item record
    Abstract
    Tuning the magnetic behavior of nanoparticles via the control of their features has always been challenging because these features are mostly intertwined. In the last years, a novel synthetic approach based on cation-exchange has been reported, and one of its main advantages is to maintain the shape and size of nanoparticles. However, such a synthetic strategy has been seldom applied to iron oxide magnetic nanoparticles, where the substitution of iron with diverse transition element cations was described as occurring in their whole volume. Surprisingly, we found results quite discordant from the few ones so far published in exploiting again this approach. We show here that it unavoidably leads to core/shell structures with only the shell undergoing the cation-exchange. Moreover, the starting phase of iron oxide strongly dictates the number of iron cations that could be replaced: if it is structurally free of vacancies, like magnetite, the maximum amount of exchanged cations is low and only affects the nanoparticles' most external, disordered layers. Conversely, the cation-exchange is boosted if the iron oxide phase is structurally prone to vacancies, like wüstite, and the shell where the iron cations have been partly substituted becomes quite thicker. These findings are further corroborated by the materials' magnetic properties.
    Citation
    Lentijo-Mozo S, Deiana D, Sogne E, Casu A, Falqui A (2018) Unexpected Insights about Cation-Exchange on Metal Oxide Nanoparticles and Its Effect on Their Magnetic Behavior. Chemistry of Materials 30: 8099–8112. Available: http://dx.doi.org/10.1021/acs.chemmater.8b04331.
    Sponsors
    Table of contents graphic was produced by Heno Hwang, scientific illustrator at KAUST, who is gratefully acknowledged. Mr. Efisio Zuddas, who participated to the preparation of some samples, is also thankfully acknowledged.
    Publisher
    American Chemical Society (ACS)
    Journal
    Chemistry of Materials
    DOI
    10.1021/acs.chemmater.8b04331
    Additional Links
    https://pubs.acs.org/doi/10.1021/acs.chemmater.8b04331
    ae974a485f413a2113503eed53cd6c53
    10.1021/acs.chemmater.8b04331
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Bioscience Program

    entitlement

     
    DSpace software copyright © 2002-2021  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.