Preparation of spherical silica particles by Stober process with high concentration of tetra-ethyl-orthosilicate

被引：293

作者：

Wang, Xiao-Dong ^{[1
]}

Shen, Zheng-Xiang ^{[1
]}

Sang, Tian ^{[1
]}

Cheng, Xin-Bin ^{[1
]}

Li, Ming-Fang ^{[2
]}

Chen, Ling-Yan ^{[1
]}

Wang, Zhan-Shan ^{[1
]}

机构：

[1] Tongji Univ, Dept Phys, Inst Precis Opt Engn, Shanghai 200092, Peoples R China

[2] Tongji Univ, Dept Chem, Shanghai 200092, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2010年 / 341卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Silica; Solid content; Hydrolysis; Condensation; GROWTH-MODEL; SOL-GEL; NANOPARTICLES; SPHERES; SIZE; HYDROLYSIS; PRECIPITATION; KINETICS; CONDENSATION; ALKOXIDES;

D O I：

10.1016/j.jcis.2009.09.018

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：

In this paper, Stober process with high concentration of tetra-ethyl-orthosilicate (TEOS) up to 1.24 M is used to prepare monodisperse and uniform-size silica particles. The reactions are carried out at [TEOS] = 0.22-1.24 M, low concentrations of ammonia ([NH3] = 0.81 [TEOS]), and [H2O] = 6.25[TEOS] in isopropanol. The solids content in the resulting suspension achieves a maximum value of 7.45% at 1.24 M TEOS. Various-sized particles in the range of 30-1000 nm are synthesized. The influences of TEOS, NH3, and H2O on the size and size distribution of the particles are discussed. A modified monomer addition model combined with aggregation model is proposed to analyze the formation mechanism of silica particles. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：23 / 29

页数：7

共 37 条

[1] Synthesis of nanosize silica in a nonionic water-in-oil microemulsion: Effects of the water/surfactant molar ratio and ammonia concentration [J].

Arriagada, FJ ;

Osseo-Asare, K .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1999, 211 (02) :210-220

[2]

Balthis J.H., 1952, U.S. Patent, Patent No. 2614994

[3] RAMAN AND INFRARED-SPECTRA ON SILICA-GEL EVOLVING TOWARD GLASS [J].

BERTOLUZZA, A ;

FAGNANO, C ;

MORELLI, MA ;

GOTTARDI, V ;

GUGLIELMI, M .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1982, 48 (01) :117-128

[4] PREPARATION OF MONODISPERSE SILICA PARTICLES - CONTROL OF SIZE AND MASS FRACTION [J].

BOGUSH, GH ;

TRACY, MA ;

ZUKOSKI, CF .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1988, 104 (01) :95-106

[5] STUDIES OF THE KINETICS OF THE PRECIPITATION OF UNIFORM SILICA PARTICLES THROUGH THE HYDROLYSIS AND CONDENSATION OF SILICON ALKOXIDES [J].

BOGUSH, GH ;

ZUKOSKI, CF .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1991, 142 (01) :1-18

[6] UNIFORM SILICA PARTICLE-PRECIPITATION - AN AGGREGATIVE GROWTH-MODEL [J].

BOGUSH, GH ;

ZUKOSKI, CF .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1991, 142 (01) :19-34

[7]

Brinker C.J., 1991, SOL GEL SCI

[8]

Brinker C. J., 1990, SOL GEL SCI PHYS CHE, P581

[9] The size dependence of growth rate of monodisperse silica particles from tetraalkoxysilane [J].

Chen, SL ;

Dong, P ;

Yang, GH .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1997, 189 (02) :268-272

[10] Kinetics of formation of monodisperse colloidal silica particles through the hydrolysis and condensation of tetraethylorthosilicate [J].

Chen, SL ;

Dong, P ;

Yang, GH ;

Yang, JJ .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1996, 35 (12) :4487-4493

← 1 2 3 4 →