Preparation and characterization of γ-La 2S 3 nanoparticles from thermal decomposition

Pei Sen Li; Huan Yong Li; Wan Qi Jie

doi:10.1007/s12613-011-0506-x

Preparation and characterization of γ-La ₂S ₃ nanoparticles from thermal decomposition

Pei Sen Li
, Huan Yong Li
, Wan Qi Jie

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

To synthesize pure γ-La ₂S ₃ at lower temperature, lanthanide complex La(Et ₂S ₂CN) ₃•phen, containing La-S bond, was chosen as the precursors to decompose. The obtained samples were characterized by X-ray power diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) with an energy dispersive spectrometer and UV-Vis diffuse reflectance spectra. The decomposition mechanism of the lanthanide complex was studied by thermogravimetric analyses (TGA). The results show that the obtained samples are cubic phase particles with sizes among 20-50 nm and the band gap is 2.97 eV, which is bigger than that of its bulk crystal. TG/DTG results indicate that La(Et ₂S ₂CN) ₃•phen decomposed to γ-La ₂S ₃ via La ₄(Et ₂S ₂CN) ₃ as an intermediate product.

Original language	English
Pages (from-to)	748-752
Number of pages	5
Journal	International Journal of Minerals, Metallurgy and Materials
Volume	18
Issue number	6
DOIs	https://doi.org/10.1007/s12613-011-0506-x
State	Published - Dec 2011

Keywords

chalcogenides
decomposition
nanoparticles
optical properties
thermogravimetric analysis

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10.1007/s12613-011-0506-x

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@article{b9cf7ccbd76c4cac9dbef6335fa16802,

title = "Preparation and characterization of γ-La 2S 3 nanoparticles from thermal decomposition",

abstract = "To synthesize pure γ-La 2S 3 at lower temperature, lanthanide complex La(Et 2S 2CN) 3•phen, containing La-S bond, was chosen as the precursors to decompose. The obtained samples were characterized by X-ray power diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) with an energy dispersive spectrometer and UV-Vis diffuse reflectance spectra. The decomposition mechanism of the lanthanide complex was studied by thermogravimetric analyses (TGA). The results show that the obtained samples are cubic phase particles with sizes among 20-50 nm and the band gap is 2.97 eV, which is bigger than that of its bulk crystal. TG/DTG results indicate that La(Et 2S 2CN) 3•phen decomposed to γ-La 2S 3 via La 4(Et 2S 2CN) 3 as an intermediate product.",

keywords = "chalcogenides, decomposition, nanoparticles, optical properties, thermogravimetric analysis",

author = "Li, \{Pei Sen\} and Li, \{Huan Yong\} and Jie, \{Wan Qi\}",

year = "2011",

month = dec,

doi = "10.1007/s12613-011-0506-x",

language = "英语",

volume = "18",

pages = "748--752",

journal = "International Journal of Minerals, Metallurgy and Materials",

issn = "1674-4799",

publisher = "University of Science and Technology Beijing",

number = "6",

}

TY - JOUR

T1 - Preparation and characterization of γ-La 2S 3 nanoparticles from thermal decomposition

AU - Li, Pei Sen

AU - Li, Huan Yong

AU - Jie, Wan Qi

PY - 2011/12

Y1 - 2011/12

N2 - To synthesize pure γ-La 2S 3 at lower temperature, lanthanide complex La(Et 2S 2CN) 3•phen, containing La-S bond, was chosen as the precursors to decompose. The obtained samples were characterized by X-ray power diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) with an energy dispersive spectrometer and UV-Vis diffuse reflectance spectra. The decomposition mechanism of the lanthanide complex was studied by thermogravimetric analyses (TGA). The results show that the obtained samples are cubic phase particles with sizes among 20-50 nm and the band gap is 2.97 eV, which is bigger than that of its bulk crystal. TG/DTG results indicate that La(Et 2S 2CN) 3•phen decomposed to γ-La 2S 3 via La 4(Et 2S 2CN) 3 as an intermediate product.

AB - To synthesize pure γ-La 2S 3 at lower temperature, lanthanide complex La(Et 2S 2CN) 3•phen, containing La-S bond, was chosen as the precursors to decompose. The obtained samples were characterized by X-ray power diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) with an energy dispersive spectrometer and UV-Vis diffuse reflectance spectra. The decomposition mechanism of the lanthanide complex was studied by thermogravimetric analyses (TGA). The results show that the obtained samples are cubic phase particles with sizes among 20-50 nm and the band gap is 2.97 eV, which is bigger than that of its bulk crystal. TG/DTG results indicate that La(Et 2S 2CN) 3•phen decomposed to γ-La 2S 3 via La 4(Et 2S 2CN) 3 as an intermediate product.

KW - chalcogenides

KW - decomposition

KW - nanoparticles

KW - optical properties

KW - thermogravimetric analysis

UR - https://www.scopus.com/pages/publications/83455164144

U2 - 10.1007/s12613-011-0506-x

DO - 10.1007/s12613-011-0506-x

M3 - 文章

AN - SCOPUS:83455164144

SN - 1674-4799

VL - 18

SP - 748

EP - 752

JO - International Journal of Minerals, Metallurgy and Materials

JF - International Journal of Minerals, Metallurgy and Materials

IS - 6

ER -

Preparation and characterization of γ-La ₂S ₃ nanoparticles from thermal decomposition

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Keywords

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