Access to lanthanoid telluride nanoparticles: Liquid exfoliation of LnTe3 (Ln = La, Ho)статья
Статья опубликована в журнале из списка Web of Science и/или Scopus
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Авторы:
Pomelova T.A.,
Muraveva V.K.,
Podlipskaya T.Yu,
Khandarkhaeva S.E.,
Nebogatikova N.A.,
Yushina I.V.,
Gatapova E.Ya,
Cordier S.,
Naumov N.G.
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Журнал:
Materials Science & Engineering B: Solid-State Materials for Advanced Technology
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Том:
228
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Год издания:
2018
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Издательство:
Elsevier BV
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Местоположение издательства:
Netherlands
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Первая страница:
261
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Последняя страница:
266
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DOI:
10.1016/j.mseb.2017.12.006
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Аннотация:
Although many of the nanoparticles containing lanthanoids are deeply investigated, the reports concerning chalcogenide materials are scarce. Comprehensive exploration of properties of these materials requires a proper preparation method avoiding hydrolysis and contamination with oxygen-containing products. Hence, in this case, the top-down approach could be preferable. In this study we demonstrated preparation of LnTe3 (Ln = La, Ho) nanoparticles by liquid exfoliation method. Bulk tritellurides LaTe3 and HoTe3 afford stable dispersions in a number of common organic solvents under ultrasonic treatment. The size and morphology of nanoparticles in colloid solutions as well as films prepared from them were investigated by a number of methods (AFM, TEM, DLS, XRD, Raman). LnTe3 form stable dispersions in alcoholic media with concentration up to 165 mg/L. In these dispersions nanoparticles exist as 1–2 layered charged flakes with lateral size 50–80 nm. The nanoparticles can be reassembled as films, which demonstrated orientation along 0 k 0 direction. © 2017 Elsevier B.V.
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Добавил в систему:
Гатапова Елизавета Яковлевна