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

页码：79 / 85

页数：7

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