期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 360, 期 1, 页码 86-92出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2011.03.084
关键词
Mesoporous silica SBA-15; Surface functionalization; Calix[4]arene derivatives; Solid extraction phase; Heavy transition metal ions
资金
- Fonds National de la Recherche Scientifique, Belgium
- Belgian federal PAI-IUAP [17/6]
A layer of macrocyclic calix[4]arene derivatives has been grafted on the internal surface of the mesochannels of the ordered mesoporous SBA-15 to develop highly efficient trap for heavy transition metal (HIM) ions. To ensure the successful anchoring of calix[4]arene derivatives on the surface of SBA-15, two different types of calix[4]arene derivatives, one with one trimethoxysilane functional group and another with two trimethoxysilane functional groups have been explored. XRD, N(2) adsorption and TEM results provide strong evidence that the mesoporous structure of the supporting materials retain their long range ordering throughout the grafting process. Solid-state NMR, TG and FT-IR spectroscopy indicate that both types of calix[4]arene derivatives can be well-anchored on the surface of the wall of SBA-15. Calix[4]arene derivative with only one trimethoxysilane functional group showed high grafting efficiency compared to that with two trimethoxysilane functional groups due to the intramolecular and intermolecular poly-condensation between two trimethoxysilane functional groups. The HIM ions extraction capacity in aqueous solution of macrocycle functionalized SBA-15 nanohybrides for a series of HIM ions has been studied. The obtained materials demonstrated very high HIM ions extraction capacity up to 96% for Pb2(+) in aqueous solution. (C) 2011 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据