Highly Dispersed Re-Doped CoAl2 O4 Nanopigments: Synthesis and Chromatic Properties

Nanosized spinel sub(CoAl2-x) sub(Rex) sub(O4) complex oxides were prepared by self-propagation combustion method. The products have been characterized by XRD, SEM, and EDS. The results indicated that Al super(3+) can be partly replaced by Re super(3+) when the doped amount is less than 10%, which f...

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Bibliographic Details
Published in:Journal of nanomaterials 2016-01, Vol.2016
Main Authors: Tong, Yuping, Zhang, Hailong, Wang, Shun, Chen, Zheng, Bian, Baixue
Format: Article
Language:English
Subjects:
Dispersion
Nanomaterials
Nanoparticles
Nanostructure
Oxides
Pigments
Reflectivity
Solid solutions
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Summary:Nanosized spinel sub(CoAl2-x) sub(Rex) sub(O4) complex oxides were prepared by self-propagation combustion method. The products have been characterized by XRD, SEM, and EDS. The results indicated that Al super(3+) can be partly replaced by Re super(3+) when the doped amount is less than 10%, which forms single solid solution. The NIR reflectance and chromatic properties of samples have also been investigated. The substitution of Re super(3+) for Al super(3+) in CoAl sub(2) O sub(4) can increase the blueness of pigments. SEM results revealed that the obtained sub(CoAl2-x) sub(Rex) sub(O4) pigments consisted of highly dispersed spherical-like nanoparticles with uniform size distribution. EDS results indicated that the distribution of element was considerably uniform with no chemical segregation phenomenon.
ISSN:1687-4110
1687-4129
DOI:10.1155/2016/4169673