Hydrous alumina/silica double-layer surface coating of TiO2 pigment
文献类型：期刊论文
| 作者 | Li, Jie1,2; Liu, Yahui1,2; Wang, Yong1,2,3; Wang, Weijing1,2; Wang, Dong1,2; Qi, Tao1,2 |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2012-08-05 |
| 卷号 | 407期号:0页码:77-84 |
| 关键词 | Surface coating Double-layer Hydrous alumina (-111) facets TiO2 pigment |
| ISSN号 | 0927-7757 |
| 通讯作者 | Qi, T |
| 英文摘要 | The hydrous alumina/silica double-layer surface coating of TiO2 pigment was prepared by precipitation method under two different conditions. High-resolution transmission electron microscopy (HRTEM), Energy dispersive spectrometer (EDS). X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectrum (FTIR) as well as zeta-potential analysis were used to characterize the morphology, structure and surface electrokinetic behavior, respectively. The results show that hydrous alumina is continuously coated on the surface of silica-coated TiO2 particle with a compact layer at 60 degrees C, pH 4.0. There is a chemical interaction between the hydrous alumina layer and silica layer. An Al-O-Si bond was formed and a thin film of aluminosilicate was existed. A flocculent hydrous alumina layer was formed at 60 degrees C, pH 8.0. The XPS spectra of Ols show that the peak of 531.2 eV is assigned to AlO(OH) for the loose and flocculent morphology. The theoretical calculations reveal that the coated Al2O3 center dot H2O on Si-O layer combined with (-111) lattice plant of rutile TiO2 is more stable than the coated AlO(OH) and the discrepancy of total energy between them is about -1.303 eV, i.e., the sample obtained at 60 degrees C. pH 4.0 has a more stable thermodynamic property. In addition, the adsorption of H+ ion on AlO(OH) surface is easier than that on Al2O3 center dot H2O surface, as the discrepancy of total energy between them decrease to -0.721 eV. (c) 2012 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | PARTICLES ; PRECIPITATION ; MORPHOLOGY ; MOLECULES ; EXCHANGE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000306890200011 |
| 公开日期 | 2013-10-15 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3230]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Hebei Univ Sci & Technol, Dept Pharmaceut & Chem Engn, Shi Jiazhang 050031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jie,Liu, Yahui,Wang, Yong,et al. Hydrous alumina/silica double-layer surface coating of TiO2 pigment[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2012,407(0):77-84. |
| APA | Li, Jie,Liu, Yahui,Wang, Yong,Wang, Weijing,Wang, Dong,&Qi, Tao.(2012).Hydrous alumina/silica double-layer surface coating of TiO2 pigment.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,407(0),77-84. |
| MLA | Li, Jie,et al."Hydrous alumina/silica double-layer surface coating of TiO2 pigment".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 407.0(2012):77-84. |
入库方式： OAI收割
来源：过程工程研究所
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