Preparation of CoAl2O4 nanoblue pigment via polyacrylamide gel method

被引：70

作者：

Jafari, Mahsa ^{[1
]}

Hassanzadeh-Tabrizi, S. A. ^{[2
]}

机构：

[1] Islamic Azad Univ, Najafabad Branch, Dept Mat Engn, Najafabad, Isfahan, Iran

[2] Islamic Azad Univ, Najafabad Branch, Young Researchers & Elite Club, Najafabad, Isfahan, Iran

来源：

POWDER TECHNOLOGY | 2014年 / 266卷

关键词：

Polyacrylamide; Blue pigment; CoAl2O4; Nanostructured material; SURFACE-AREA COAL2O4; SOL-GEL; COBALT; SPINELS; PARTICLES; ALUMINA; POWDERS; NICKEL;

D O I：

10.1016/j.powtec.2014.06.018

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The purpose of this study is to define the preparation of CoAl2O4 as a nano-ceramic blue pigment via the polyacrylamide gel method. The powders were studied by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), thermo-gravimetric (TG) and differential thermal analysis (DTA), Fourier transform infrared spectroscopy (FTIR) and UV-visible techniques (UV-vis). Crystallized CoAl2O4 was obtained after calcination at 600 degrees C. The obtained powders in low temperature had a platy structure. By increasing the temperature, the layered structure was crushed into smaller pieces. The average particle size was approximately 18 nm. The UV-vis spectra presented three bands at 551,590 and 628 nm attributed to the Co2+ spin transitions in tetrahedral sites. The results showed that a different calcination temperature causes a variation in the color and size of the particles. The temperature for obtaining blue CoAl2O4 was about 1000 degrees C. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：236 / 239

页数：4

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