Preparation of nanosized anatase TiO2-coated illite composite pigments by Ti(SO4)2 hydrolysis

被引：28
|
作者：
Zhao, Xiaoxian [1 ,2 ,3 ]
Li, Jie [1 ,2 ]
Zhang, Yongqiang [3 ]
Dong, Haifeng [3 ]
Qu, Jingkui [1 ,2 ]
Qi, Tao [1 ,2 ]
机构：
[1] Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
[3] Yanshan Univ, Sch Environm & Chem Engn, Qinhuangdao 066004, Hebei, Peoples R China
来源：
POWDER TECHNOLOGY | 2015年 / 271卷
基金：
美国国家科学基金会; 中国国家自然科学基金;
关键词：
Coating; Nanosized titanium dioxide; Illite particle; Composite pigment; TITANYL SULFATE-SOLUTION; TIO2; PARTICLES; SURFACE; GROWTH;
D O I：
10.1016/j.powtec.2014.10.021
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Illite/TiO2 composite pigments were prepared through hydrolysis of titanium sulfate on the surface of illite particles. Some factors that influence the coating process of TiO2 were investigated in single-factor tests, and the whiteness and oil absorption value of coating products were tested. With optimized coating conditions, the whiteness and oil absorption of illite/TiO2 composite pigments can reach to 95.73% and 31.35 g/100 g, respectively. The crystalline phases and surface morphology of the coating products were characterized by X-ray diffraction and scanning electron microscopy. In addition, the precipitated mechanism of anatase was investigated by X-ray photoelectron spectroscopy. The results showed that the microstructure of TiO2 coating on illite substrate was mainly anatase. The uniform and dense TiO2 layers were anchored to the surface of illite by forming Ti-O-Si bond. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：262 / 269
页数：8
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