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YS-TaS2 and YxLa1-xS-TaS2 (0 ≤ x ≤ 1) Nanotubes: A Family of Misfit Layered Compounds.
Hettler, Simon; Sreedhara, M B; Serra, Marco; Sinha, Sudarson S; Popovitz-Biro, Ronit; Pinkas, Iddo; Enyashin, Andrey N; Tenne, Reshef; Arenal, Raul.
Afiliação
  • Hettler S; Instituto de Nanociencia de Aragón, Universidad de Zaragoza, 50018 Zaragoza, Spain.
  • Serra M; Department of Physical Chemistry, Center for Biomedical Research (CINBIO), Universidad de Vigo, 36310 Vigo, Spain.
  • Enyashin AN; Institute of Solid State Chemistry UB RAS, 620990 Ekaterinburg, Russian Federation.
  • Tenne R; Institute of Natural Sciences and Mathematics, Ural Federal University, 620083 Ekaterinburg, Russian Federation.
ACS Nano ; 14(5): 5445-5458, 2020 May 26.
Article em En | MEDLINE | ID: mdl-32347713
We present the analysis of a family of nanotubes (NTs) based on the quaternary misfit layered compound (MLC) YxLa1-xS-TaS2. The NTs were successfully synthesized within the whole range of possible compositions via the chemical vapor transport technique. In-depth analysis of the NTs using electron microscopy and spectroscopy proves the in-phase (partial) substitution of La by Y in the (La,Y)S subsystem and reveals structural changes compared to the previously reported LaS-TaS2 MLC-NTs. The observed structure can be linked to the slightly different lattice parameters of LaS and YS. Raman spectroscopy and infrared transmission measurements reveal the tunability of the plasmonic and vibrational properties. Density-functional theory calculations showed that the YxLa1-xS-TaS2 MLCs are stable in all compositions. Moreover, the calculations indicated that substitution of La by Sc atoms is electronically not favorable, which explains our failed attempt to synthesize these MLC and NTs thereof.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: ACS Nano Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Espanha

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: ACS Nano Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Espanha