Adsorption of Cr(III) and Fe(III) on an inorganic-organic silicon hybrid surface

被引：9

作者：

de Farias, RF

de Souza, AG

Nunes, LM

Cardoso, VD

机构：

[1] Univ Fed Roraima, Dept Quim, BR-69301970 Boa Vista, Roraima, Brazil

[2] Univ Fed Paraiba, Dept Quim, BR-58059900 Joao Pessoa, Paraiba, Brazil

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2002年 / 211卷 / 2-3期

关键词：

sol-gel; hybrids; adsorption; chromium; iron;

D O I：

10.1016/S0927-7757(02)00241-8

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：

By using tetraethylortosilicate (TEOS) and n-[3(trimethoxysilyl) propyl]-ethylenediamine, a silicon inorganic-organic hybrid matrix with 4.0 mmol g(-1) of pendant organic moiety was synthesized. The hybrid matrix was used as a substrate for the adsorption of chromium and iron from their chloride aqueous solutions. The matrix shows a higher affinity towards chromium, with concentrated iron solutions provoking its dissolution. The maximum adsorption capacity towards chromium and iron was 0.56 and 0.38 mmol g(-1), respectively. (C) 2002 Published by Elsevier Science B.V.

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收藏

页码：295 / 298

页数：4

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