One-step synthesis of high capacity mesoporous Hg2+ adsorbents by non-ionic surfactant assembly

被引：200

作者：

Brown, J ^{[1
]}

Richer, R ^{[1
]}

Mercier, L ^{[1
]}

机构：

[1] Laurentian Univ, Dept Chem & Biochem, Sudbury, ON P3E 2C6, Canada

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2000年 / 37卷 / 1-2期

基金：

加拿大自然科学与工程研究理事会;

关键词：

adsorbent; mercury; mesoporous; mesostructure; one-step synthesis;

D O I：

10.1016/S1387-1811(99)00191-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

We report the first example of a one-step preparation route towards high capacity mesostructured heavy metal ion adsorbents with uniform mesopore diameters. The synthesis approach involved the co-condensation of TEOS and 3-mercaptopropyltrimethoxysilane in the presence of structure-directing non-ionic Triton-X100 surfactant micelles. One such material, denoted MP(2)-MSU-2, had a uniform pore diameter distribution centered at 28 Angstrom and a Hg2+ loading capacity of 2.3 mmol/g, making its effectiveness for mercury ion trapping comparable to that of the highest capacity materials previously reported. The total access of the Hg2+ ions to every complexation site in the adsorbents was also demonstrated. Treating the Hg-loaded adsorbents with concentrated HCl was found to remove the bound mercury ions and regenerate the material for further adsorption. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：41 / 48

页数：8

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