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Access to lanthanoid telluride nanoparticles: Liquid exfoliation of LnTe3 (Ln = La, Ho)статья
- 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.
- Журнал: Materials Science & Engineering B: Solid-State Materials for Advanced Technology
- Том: 228
- Год издания: 2018
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 261
- Последняя страница: 266
- DOI: 10.1016/j.mseb.2017.12.006
- 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.
- Добавил в систему: Гатапова Елизавета Яковлевна