Preparation of SiO2 coated Ce2S3 red pigment with improved thermal stability

SiO2 coated Ce2S3 red pigment was prepared in ethanol/H2O system via sol-gel method and TEOS were used as silica sources. X-ray diffraction （XRD）, scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDX）, UV-visible spectro-photometer and automatic colorimeter were used to investigat...

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Bibliographic Details
Published inJournal of rare earths Vol. 31; no. 9; pp. 891 - 896
Main Author 陈观宏 朱振峰 刘辉 武英峰 朱春奎
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.2013
Subjects
Ce2S3
cerium silicon molar ratio
Coating
Ethyl alcohol
Pigments
Rare earth metals
rare earths
red pigment
Red pigments
Scanning electron microscopy
Silicon dioxide
SiO2 coating
SiO2涂层
Thermal stability
X-射线衍射仪
二氧化硅涂层
制备
可见分光光度计
扫描电子显微镜
热稳定性
红色颜料
cerium silicon molar ratio
red pigment
thermal stability
Ce2S3
SiO2 coating
rare earths
Online AccessGet full text
ISSN1002-0721
2509-4963
DOI10.1016/S1002-0721(12)60375-5

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Summary:SiO2 coated Ce2S3 red pigment was prepared in ethanol/H2O system via sol-gel method and TEOS were used as silica sources. X-ray diffraction （XRD）, scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDX）, UV-visible spectro-photometer and automatic colorimeter were used to investigate the properties of the samples. The results showed that the compact SiO2 film formed on the surface of Ce2S3 pigment at a cerium silicon molar ratio of 2. The thermal stability temperature of Ce2S3 pigment was improved to 450 oC after SiO2 coating. In addition, the color of Ce2S3 pigment was not affected significantly through coating colorless and transparent SiO2 and it could be used as safe red pigment in higher temperature fields.
Bibliography:11-2788/TF
CHEN Guanhong , ZHU Zhenfeng, LIU Hui , WU Yingfeng , ZHU Chunkui （School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi ＇an 710021, China）
Ce2S3; red pigment; SiO2 coating; cerium silicon molar ratio; thermal stability; rare earths
SiO2 coated Ce2S3 red pigment was prepared in ethanol/H2O system via sol-gel method and TEOS were used as silica sources. X-ray diffraction （XRD）, scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDX）, UV-visible spectro-photometer and automatic colorimeter were used to investigate the properties of the samples. The results showed that the compact SiO2 film formed on the surface of Ce2S3 pigment at a cerium silicon molar ratio of 2. The thermal stability temperature of Ce2S3 pigment was improved to 450 oC after SiO2 coating. In addition, the color of Ce2S3 pigment was not affected significantly through coating colorless and transparent SiO2 and it could be used as safe red pigment in higher temperature fields.
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ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(12)60375-5