A novel two-step silica-coating process for engineering magnetic nanocomposites

被引：226

作者：

Liu, QX

Xu, ZH ^{[1
]}

Finch, JA

Egerton, R

机构：

[1] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada

[2] USG Corp, Res & Technol Ctr, Libertyville, IL USA

[3] McGill Univ, Dept Min & Met Engn, Montreal, PQ H3A 2B2, Canada

[4] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada

来源：

CHEMISTRY OF MATERIALS | 1998年 / 10卷 / 12期

关键词：

D O I：

10.1021/cm980370a

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：

A novel two-step silica-coating process, sol-gel followed by dense liquid coatings, is described. The maghemite surfaces coated with silica, using the two-step process, are characterized by X-ray photoelectron spectroscopy, electrokinetics, leaching test, and magnetization measurement. Compared with the single-step sol-gel or dense-liquid-coating process, the two-step process produces magnetic nanocomposites of the highest protection against acid attack at the lowest level of silica coatings with maximized magnetization.

引用

页码：3936 / 3940

页数：5

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