Synthesis of Amino-Functionalized Hexagonal Mesoporous Silica for Adsorption of Pb2+

被引：21
|
作者：
Wei Kun [1 ,2 ]
Shu Lijun [1 ,2 ]
Guo Wusheng [1 ,2 ]
Wu Yuan [1 ,2 ]
Zeng Xiaofeng [1 ,2 ]
机构：
[1] S China Univ Technol, Coll Mat Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China
[2] Natl Engn Res Ctr Human Tissue Restorat & Funct R, Guangzhou 510006, Guangdong, Peoples R China
来源：
CHINESE JOURNAL OF CHEMISTRY | 2011年 / 29卷 / 01期
基金：
中国国家自然科学基金;
关键词：
mesoporous materials; functionalization; co-condensation; adsorption; CO-CONDENSATION; CAPACITY; ROUTE;
D O I：
10.1002/cjoc.201190042
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Highly ordered amino-functionalized hexagonal mesoporous silica (HMS-NH2) had been synthesized successfully by co-condensation. The resultant materials were characterized by means of XRD, TEM, FT-IR, N-2 ad-desorption and Si-29 NMR to confirm the ordered mesoporous structure and the functionalization of the amino groups. The sample was employed as a Pb2+ adsorbent in aqueous solutions at room temperature. Both Lagergren's first order kinetic model and Lagergren's second order kinetic model were used to describe the adsorption data. It was found that the pseudo second order model fitted the sorption kinetic data better than the pseudo first order model. According to the information analyzed from AAS, HMS-NH2 had a Pb2+ adsorption amount of over 90.7 mg.g(-1), showing a promising application for the treatment of wastewater containing Pb2+ ions.
引用
收藏
页码：143 / 146
页数：4
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