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

作　　者：Wei, Kun 

机构地区：[1]College of Materials Science & Engineering, South China University of Technology, Guangzhou Guangdong 510006, China [2]National Engineering Research Center for Human Tissue Restoration and Function Reconstruction, Guangzhou, Guangdong 510006, China

出　　处：《Chinese Journal of Chemistry》2011年第1期143-146,共4页中国化学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Nos. 50732003, U0834003） and High Technology Study Plan of China （Nos. 2007AA021908, 2006AA03Z356）.

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, N2 ad-desorption and 29Si 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.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, N2 ad-desorption and 29Si 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.

关 键 词：mesoporous materials FUNCTIONALIZATION CO-CONDENSATION adsorption 

分 类 号：O647.33[理学—物理化学] S816.7[理学—化学]