Synthesis of a pigment of monodispersive spherical silica particles coated with neodymium disilicate

被引：3

作者：

Ke, Shanjun ^{[1
]}

Pan, Zhidong ^{[1
]}

Wang, Yanmin ^{[1
]}

Ning, Chengyun ^{[1
]}

Zheng, Shulong ^{[2
]}

机构：

[1] S China Univ Technol, Coll Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China

[2] Foshan Oceano Ceram Co Ltd, Foshan 528138, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2016年 / 42卷 / 09期

关键词：

SiO2; Nd2Si2O7; Core-shell; Sol-gel method; SPHERES; GROWTH; ND;

D O I：

10.1016/j.ceramint.2016.04.051

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：

Spherical silica (SiO2) particles coated with neodymium disilicate (Nd2Si2O7) layer were prepared by a modified Pechini sol-gel method. The phase, structure and morphology of the prepared core-shell particles were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and transmission electron microscopy (TEM), respectively. The results reveal that the obtained particles consist of amorphous SiO2 core and crystalline Nd2Si2O7 shell, which have a perfect spherical shape with narrow size distribution, smooth surface and non-agglomeration. The SiO2@Nd2Si2O7 particles possess light-violet and light-blue colors (a*=3.46 and b*= 8.19) due to the characteristic absorption bands of neodymium element. In addition, the formation process of the core-shell SiO2@Nd2Si2O7 particles was also discussed. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：11500 / 11503

页数：4

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