Preparation and film-growing mechanism of hydrous zirconia coated on TiO2

被引：10

作者：

Li, Jie ^{[1
,2
,3
]}

Sun, Ti-chang ^{[2
]}

Wang, Yong ^{[1
,3
]}

Wang, Li-na ^{[1
,3
]}

Qu, Jing-kui ^{[1
,3
]}

Qi, Tao ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China

[2] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing 100083, Peoples R China

[3] Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS | 2010年 / 17卷 / 05期

关键词：

coatings; rutile; zirconia; materials preparation; mechanism; SURFACE; PRECIPITATION; PARTICLES; WATER;

D O I：

10.1007/s12613-010-0371-z

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To overcome the photochemical activity of rutile used as a pigment and improve its durability in application, hydrous zirconia-coated TiO2 was prepared by the precipitation method. High-resolution transmission electron microscope (HRTEM) and X-ray photoelectron spectroscopy (XPS) were used to characterize the morphology and surface structure of hydrous zirconia-coated TiO2. The zeta-potential and ultraviolet (UV) absorption of both coated and uncoated rutile were examined. The results show that hydrous zirconia can not only improve the durability but also raise the lightness. A suitable ZrO2 content of hydrous zirconia-coated TiO2 is about 1.0wt%, and a dense film on the surface of rutile can be formed with better pigmentary properties. Based on the thermodynamic analysis, the zirconia-coating process and the film growth mechanism were discussed.

引用

页码：660 / 667

页数：8

共 17 条

[1] An X-ray photoelectron spectroscopy study of the acidity of SiO2-ZrO2 mixed oxides [J].