Synthesis of hydrosols of oxygen-containing cobalt compounds

被引：0

作者：

Yarovaya, O. V. ^{[1
]}

Mostovaya, U. L. ^{[1
]}

Shabal'nikova, A. D. ^{[1
]}

Kienskaya, K. I. ^{[1
]}

Nazarov, V. V. ^{[1
]}

机构：

[1] Mendeleev Univ Chem Technol, Moscow 125047, Russia

来源：

COLLOID JOURNAL | 2012年 / 74卷 / 04期

关键词：

AMMONIUM HYDROXIDE;

D O I：

10.1134/S1061933X12030155

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 procedure is developed for the synthesis of hydrosols of oxygen-containing cobalt compounds. The hydrosols are stable to aggregation for several weeks in the absence of additional stabilizers. It is established that the synthesized hydrosols contain crystalline particles formed from a mixture of CoO(OH) and Co3O4. According to transmission electron microscopy data, the most probable diameter of the particles is about 30 nm. The hydrosols are stable to aggregation at pH 6.2-8.0. In this pH range, the particles are positively charged and the values of their electrokinetic potential are no higher than 10 mV.

引用

页码：523 / 528

页数：6

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