Influence of S⁄La Molar Ratio on the Morphology and Optical Property of La2S3 Microcrystalline Prepared by Microwave Hydrothermal

Ye Zhang; Li Yun Cao; Jian Feng Huang; Jian Peng Wu

doi:10.4028/www.scientific.net/KEM.512-515.223

Paper Titles

Synthesis of V₂O₅ Powders by EDTA Assistance Ultrasound Sol-Gel Process
p.207

Synthesis of In₂Se₃/CuSe Composite Powder by Solvothermal Method
p.211

Synthesis and Characterization the Intercalation Compound of SnS₂-Ethylenediamine by Hydrothermal Reaction
p.215

Synthesis and Characterization of SnS Flake-Like Microcrystals with a Microwave Hydrothermal Processing
p.219

Influence of S⁄La Molar Ratio on the Morphology and Optical Property of La₂S₃ Microcrystalline Prepared by Microwave Hydrothermal
p.223

Synthesis of LiV₃O₈ Crystallites via an Improved Citric Acid Assisted Sol-Gel Method
p.227

Effect of pH Value on Preparation of La₂CuO₄ Microcrystallites Synthesized by Sol-Gel Process
p.231

Phase Control of Nanosized NaYF₄ Upconversion Particles
p.235

Preparation and Property Characterization of Talc/Phthalocyanine Blue Composite Powder
p.239

HomeKey Engineering MaterialsKey Engineering Materials Vols. 512-515Influence of S⁄La Molar Ratio on the Morphology...

Influence of S⁄La Molar Ratio on the Morphology and Optical Property of La₂S₃ Microcrystalline Prepared by Microwave Hydrothermal

Abstract:

The La₂S₃ microcrystalline were prepared by microwave hydrothermal method (M–H). The influences of different S⁄La molar ratio on the phase composition, and morphology of the La₂S₃ microcrystalline were particularly investigated. The obtained samples were characterized by X–ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet and visible–spectroscopy (UV–vis) and photoluminescence spectroscopy (PL) at room temperature. XRD results show that the decrease of S⁄La molar ratio from 6⁄3 to 6⁄6, the improving in crystallization of the obtained microcrystalline is observed with the decrease in S⁄La molar ratio. The morphology of prepared La₂S₃ transforms from irregular shapes to quasi-sphere structure. The as-prepared microcrystalline show excellent absorbency of ultraviolet light and are almost transparent to visible light to exhibit stable violet-blue photoluminescence properties under the ultraviolet light excitation at room temperature.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 512-515)

Pages:

223-226

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.512-515.223

Citation:

Cite this paper

Online since:

June 2012

Authors:

Ye Zhang, Li Yun Cao, Jian Feng Huang, Jian Peng Wu

Keywords:

La₂S₃ Microcrystalline, Microwave Hydrothermal, Optical Property

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] G.D. Bagde, H.M. Pathan, C.D. Lokhande, S.A. Patil, M. Muller, Studies on sprayed lanthanum sulphide (La2S3) thin ﬁlms from non-aqueous medium, Appl. Surf. Sci. 252 (2005)1502-1509.

DOI: 10.1016/j.apsusc.2005.02.132

Google Scholar

[2] K. Kukli, H. Heikkinen, E. Nykanen, L. Niinisto, Deposition of lanthanum sulﬁde thin ﬁlms by atomic layer epitaxy, J. Alloy. Compd. 275-277 (1998) 10-14.

DOI: 10.1016/s0925-8388(98)00264-3

Google Scholar

[3] L. Tian, T.Ouyang, K. P. Loh, J. J. Vittal, La2S3 thin films from metal organic chemical vapor deposition of single-source precursor, J. Mater. Chem. 16 (2006) 272-277.

DOI: 10.1039/b511981b

Google Scholar

[4] M. Ohta, S. Hirai, Z. Ma, T. Nishimura, Y. Uemura, K. Shimakage, Phase transformation and microstructures of Ln2S3 (Ln=La,Sm) with different impurities content of oxygen and carbon, J. Alloy. Compd. 408-412 (2006) 551-555.

DOI: 10.1016/j.jallcom.2004.12.071

Google Scholar

[5] V.V. Sokolov, A.A. Kamarzin, L.N. Trushnikova, M.V. Savelyeva, Optical materials containing rare earth Ln2S3 sulfides, J. Alloy. Compd. 225 (1995) 567-570.

DOI: 10.1016/0925-8388(94)07063-6

Google Scholar

[6] M. Ohta, H. Yuan, S. Hirai, Y. Uemura, K. Shimakage, Preparation of R2S3 (R:La, Pr, Nd, Sm) powders by sulfurization of oxide powders using CS2 gas, J. Alloy. Compd. 374 (2004) 112-115.

DOI: 10.1016/j.jallcom.2003.11.081

Google Scholar

[7] C.M. Forster and W.B. White, Optical absorption edge in rare earth sesquisulﬁdes, Mater. Res. Bull. 41 (2006) 448-454.

Google Scholar

[8] H. Yuan, J. Zhang, R. Yu, Q. Su, Synthesis of rare earth sulfides and their UV-vis absorption spectra, J. Rare Earth 27 (2009) 308-311.

DOI: 10.1016/s1002-0721(08)60239-2

Google Scholar

[9] K.B. Tang, C.H. An, P.B. Xie, G.Z. Shen, Y.T. Qian, Low-temperature synthesis and characterization of β-La2S3 nanorods, J. Cryst. Growth 245 (2002) 304-308.

DOI: 10.1016/s0022-0248(02)01730-x

Google Scholar