Effect of ultrasound on synthesis of spherical silica

被引：37

作者：

Enomoto, N

Koyano, T

Nakagawa, Z

机构：

[1] Materials and Structure Laboratory, Tokyo Institute of Technology, Midori, Yokohama 226

来源：

ULTRASONICS SONOCHEMISTRY | 1996年 / 3卷 / 02期

关键词：

Stober method; monodispersed silica spheres; ultrasonic vibration amplitude;

D O I：

10.1016/1350-1477(96)00004-W

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Spherical particles of silica were prepared in the presence of ultrasound at various frequencies (20, 1740, 4000 kHz) and intensities (<25.4 W/cm(2)). It was found that the sphere size increased with increasing ultrasonic intensity and that the 20 kHz sonication induced agglomeration among the spheres. It was inferred that such agglomeration is dominated by a silanol group (-OH) at the surface of silica spheres. Size parameters, such as sphere size, agglomeration size, and ultrasonic vibration amplitude-are discussed.

引用

页码：S105 / S109

页数：5

共 12 条

[1]

ENOMOTO N, 1994, T MRS JAP, V14, P777

[2] EFFECT OF ULTRASONIC-WAVES ON CRYSTALLIZATION FROM A SUPERSATURATED SOLUTION OF ALUM [J].