• 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

    Cu2Se and Cu Nanocrystals as Local Sources of Copper in Thermally Activated In Situ Cation Exchange

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    acsnano2E5b07219.pdf
    Size:
    2.970Mb
    Format:
    PDF
    Description:
    Accepted Manuscript
    Download
    Type
    Article
    Authors
    Casu, Alberto
    Genovese, Alessandro
    Manna, Liberato
    Longo, Paolo
    Buha, Joka
    Botton, Gianluigi A.
    Lazar, Sorin
    Kahaly, M. Upadhyay
    Schwingenschlögl, Udo cc
    Prato, Mirko
    Li, Hongbo
    Ghosh, Sandeep
    Palazon, Francisco
    De Donato, Francesco
    Lentijo Mozo, Sergio
    Zuddas, Efisio
    Falqui, Andrea cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Bioscience Program
    Computational Physics and Materials Science (CPMS)
    Material Science and Engineering Program
    NABLA Lab
    Physical Science and Engineering (PSE) Division
    Date
    2016-02-03
    Online Publication Date
    2016-02-03
    Print Publication Date
    2016-02-23
    Permanent link to this record
    http://hdl.handle.net/10754/595373
    
    Metadata
    Show full item record
    Abstract
    Among the different synthesis approaches to colloidal nanocrystals a recently developed toolkit is represented by cation exchange reactions, where the use of template nanocrystals gives access to materials that would be hardly attainable via direct synthesis. Besides, post-synthetic treatments, such as thermally activated solid state reactions, represent a further flourishing route to promote finely controlled cation exchange. Here, we report that, upon in situ heating in a transmission electron microscope, Cu2Se nanocrystals deposited on an amorphous solid substrate undergo partial loss of Cu atoms, which are then engaged in local cation exchange reactions with Cu “acceptors” phases represented by rod- and wire- shaped CdSe nanocrystals. This thermal treatment slowly transforms the initial CdSe nanocrystals into Cu2-xSe nanocrystals, through the complete sublimation of Cd and the partial sublimation of Se atoms. Both Cu “donor” and “acceptor” particles were not always in direct contact with each other, hence the gradual transfer of Cu species from Cu2Se or metallic Cu to CdSe nanocrystals was mediated by the substrate and depended on the distance between the donor and acceptor nanostructures. Differently from what happens in the comparably faster cation exchange reactions performed in liquid solution, this study shows that slow cation exchange reactions can be performed at the solid state, and helps to shed light on the intermediate steps involved in such reactions.
    Citation
    Cu2Se and Cu Nanocrystals as Local Sources of Copper in Thermally Activated In Situ Cation Exchange 2016 ACS Nano
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Nano
    DOI
    10.1021/acsnano.5b07219
    PubMed ID
    26816347
    Additional Links
    http://pubs.acs.org/doi/abs/10.1021/acsnano.5b07219
    ae974a485f413a2113503eed53cd6c53
    10.1021/acsnano.5b07219
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Bioscience Program; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; Computational Physics and Materials Science (CPMS)

    entitlement

    Related articles

    • Cu Vacancies Boost Cation Exchange Reactions in Copper Selenide Nanocrystals.
    • Authors: Lesnyak V, Brescia R, Messina GC, Manna L
    • Issue date: 2015 Jul 29
    • Colloidal CdSe/Cu3P/CdSe nanocrystal heterostructures and their evolution upon thermal annealing.
    • Authors: De Trizio L, De Donato F, Casu A, Genovese A, Falqui A, Povia M, Manna L
    • Issue date: 2013 May 28
    • Cation exchange reactions in colloidal branched nanocrystals.
    • Authors: Miszta K, Dorfs D, Genovese A, Kim MR, Manna L
    • Issue date: 2011 Sep 27
    • Sequential cation exchange in nanocrystals: preservation of crystal phase and formation of metastable phases.
    • Authors: Li H, Zanella M, Genovese A, Povia M, Falqui A, Giannini C, Manna L
    • Issue date: 2011 Nov 9
    • Sn cation valency dependence in cation exchange reactions involving Cu(2-x)Se nanocrystals.
    • Authors: De Trizio L, Li H, Casu A, Genovese A, Sathya A, Messina GC, Manna L
    • Issue date: 2014 Nov 19
    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.