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- W2391751445 abstract "Large-sized SiO2 macroporous materials were prepared by using a three-dimensional skeletal epoxy resin macroporous polymer as template through an in situ hydrolysis of ethyl silicate and a subsequent calcination at high temperature.The amino-functionalized SiO2 macroporous materials(H2N-SiO2) were obtained through the surface modification of the SiO2 macroporous materials with 3-aminopropyl-triethoxysilane under solvothermal conditions.The as-prepared macroporous materials were characterized by SEM and FT-IR.Cu2+ and Pb2+ were selected as simulative pollutants,the adsorption properties of H2N-SiO2 were investigated.The results show that Cu2+ and Pb2+ can be effectively removed from aqueous solution at room temperature and pH 6.5.The adsorption was an exothermic and spontaneous process.The adsorption follows a pseudo-second order process.The equilibrium isotherm is well described by the Freundlich model rather than the Langmuir model and the theoretical maximum adsorption capacities of Cu2+ and Pb2+ are 76.0 and 143mg/g,respectively.The removal efficiency of Pb2+ was found to be 99.4% at an initial concentration of 50mg/L.After 3 cycles of adsorption,87.8% removal efficiency of Pb2+ was maintained." @default.
- W2391751445 created "2016-06-24" @default.
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- W2391751445 date "2013-01-01" @default.
- W2391751445 modified "2023-09-23" @default.
- W2391751445 title "Preparation and adsorption properties of amino-functionalized large-sized SiO_2 macroporous materials" @default.
- W2391751445 hasPublicationYear "2013" @default.
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