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

材料学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

6 引用（Scopus）

摘要

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.

源语言	英语
页（从-至）	748-752
页数	5
期刊	International Journal of Minerals, Metallurgy and Materials
卷	18
期	6
DOI	https://doi.org/10.1007/s12613-011-0506-x
出版状态	已出版 - 12月 2011

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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",

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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

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VL - 18

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JO - International Journal of Minerals, Metallurgy and Materials

JF - International Journal of Minerals, Metallurgy and Materials

IS - 6

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

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