NDLI: Trilayer-cubic core–shell structure of PbS/EuS nanocrystals revealed by the combination of the synchrotron small-angle X-ray scattering method and energy-dispersive X-ray spectroscopy

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Takata, Masaki Masunaga, Hiroyasu Kawai, Tsuyoshi Ogawa, Hiroki Hikima, Takaaki Nakashima, Takuya Sasaki, Sono
Description	Author Affiliation: Masunaga H ( Research and Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto Sayo, Sayo, Hyogo, 679-5198, Japan. masunaga@spring8.or.jp.)
Abstract	Multilayer nanostructure analysis has been carried out for core–shell PbS/EuS nanocrystals by the combination of the synchrotron small-angle X-ray scattering (SAXS) method and energy-dispersive X-ray spectroscopy (EDS). SAXS patterns of a dilute hexane solution of the PbS/EuS nanocrystals were measured at a high signal-to-noise ratio by using synchrotron radiation. Initial structure models used for SAXS data analyses were obtained from EDS images of the particle where Eu and O atoms are localized only in the shell part of a quasi-cubic particle and, on the other hand, Pb and S atoms in the core. By simulating the intensity of SAXS using multilayer-cubic models with various core–shell electron density distributions, it was found that the particle structure was explained approximately as a trilayer-cubic model having the PbS core and the $EuS/Eu_{2}O_{3}$ shell. The diagonal length of the cubic particle was ca. 9.4 nm and the estimated thicknesses of EuS and $Eu_{2}O_{3}$ layers in the shell were ca. 1.9 and 2.9 nm at maximum, respectively.
ISSN	14779226
Issue Number	45
Volume Number	42
e-ISSN	13645447
Journal	Dalton Trans.
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2013-12-07
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Europium Chemistry Lead Nanoparticles Sulfides Ultrastructure Scattering, Small Angle Spectrometry, X-Ray Emission Synchrotrons X-Ray Diffraction Journal Article Research Support, Non-U.S. Gov't
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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