The influence of suspension composition and deposition mode on the electrophoretic deposition of TiO2 nanoparticle agglomerates

被引：88

作者：

Dor, S. ^{[1
]}

Ruhle, S. ^{[1
]}

Ofir, A. ^{[1
]}

Adler, M. ^{[1
]}

Grinis, L. ^{[1
]}

Zaban, A. ^{[1
]}

机构：

[1] Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2009年 / 342卷 / 1-3期

关键词：

Mesoporous TiO2; Electrophoretic deposition; Binder free; Controlled thickness; Density gradient; SENSITIZED SOLAR-CELLS; FILMS; EPD;

D O I：

10.1016/j.colsurfa.2009.04.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The rate of cathodic electrophoretic deposition (EPD) of TiO2 nanoparticle agglomerates and the density of the obtained films were measured as a function of the suspension composition, such as the particle concentration and the type of solvent. The difference in the dielectric constants of the solvents determines the ratio between ions and charged particles in the different suspensions and thus the deposition rate. We show that high quality mesoporous TiO2 films can be produced by EPD with a well controlled thickness. In the mesoporous films we observe a high particle density close to the substrate while further apart the particle density is very low resulting in films with a very high porosity. We show that this density profile is independent of the specific solvent or particle concentration used in the suspension. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：70 / 75

页数：6

共 19 条

[1] Compositional analysis and depth profile studies on undoped and doped tin oxide films prepared by spray technique [J].