Sol-gel synthesis, optical and structural characterization of ZrOS nanopowder

被引：10
作者：
Uduh, U. C. [1 ]
Obodo, R. M. [1 ]
Esaenwi, S. [1 ,2 ]
Amaechi, C. I. [1 ]
Asogwa, P. U. [1 ]
Osuji, R. U. [1 ]
Ezema, F. I. [1 ]
机构：
[1] Univ Nigeria, Dept Phys & Astron, Nsukka, Enugu State, Nigeria
[2] Univ Nigeria, Ctr Basic Space Sci, Natl Space Res & Dev Agcy, Nsukka, Enugu State, Nigeria
来源：
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2014年 / 71卷 / 01期
关键词：
Tetragonal ZrOS nanopowder; Anionic oxalate complex; Sol-gel technique; Absorbance; SPRAY-PYROLYSIS; ZRO2-EU3+ PHOSPHORS; THIN-FILMS; COATINGS; PHOTOLUMINESCENCE; TEMPERATURE;
D O I：
10.1007/s10971-014-3331-7
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this paper, we report the synthesis of tetragonal zirconium oxysulfide t-ZrOS nanopowder by the sol-gel method using water solution of a precursor containing thiourea [CS(NH2)(2)] and zirconium in the form of an anionic oxalate complex [Zr(C2O4)](4-). The tetragonal t-ZrOS structure with space group P4/nmm revealed by X-ray patterns showed preferred orientation along (101) plane. For surface morphology, compositional and optical absorption studies, scanning electron microscopy, energy dispersive X-ray and ultraviolet-visible spectroscopy were employed for characterization of the powder respectively. A nearly constant value of the refractive index at higher wavelength lambda a parts per thousand yen 1,100 nm was found to be 2.19. High indirect and direct optical band gap of similar to 2.0 and 2.50 eV with absorbance < 40 % were obtained for the powder.
引用
收藏
页码：79 / 85
页数：7
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