Adsorption of Cu2+ on Amine-Functionalized Mesoporous Silica Brackets |
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Authors: | Zhihui Hu Xiaodan Zhang Donghui Zhang Ji-xiao Wang |
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Affiliation: | 1. Chemical Engineering Research Center, State key laboratory of chemical engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
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Abstract: | A directly amine-functionalized mesoporous silica (AMS) was prepared via an anionic surfactant-mediated synthesis method and used as adsorbents for deep removal of Cu2+ ions from aqueous solution at room temperature. The synthesized AMS had been characterized by X-ray diffraction, nitrogen physisorption measurement, and thermogravimetric analysis. The amine groups prefer to position to the surface of AMS material due to the S?N+????I? mechanism. Copper adsorption process had been studied from both kinetic and equilibrium points of view for AMS material. Experiments proved that the aqueous Cu2+ adsorption rates were fast and adsorption capacity was about 53.3?mg/g. |
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