以具有三维骨架结构的环氧树脂大孔聚合物为整体型模板,利用硅酸酯原位水解和高温烧结制备出大尺寸SiO2大孔材料.在溶剂热条件下,用3-氨丙基三乙氧基硅烷对SiO2大孔材料进行表面修饰,得到氨基功能化SiO2大孔材料(H2N-SiO2).用SEM和FT-IR对制备的大孔材料进行了表征.以Cu2-和pb2+为模拟污染物,研究了H2N-SiO2的吸附性能.结果表明,室温下,在pH值为6.5时能有效吸附Cu2+和Pb2+；吸附为放热自发过程；吸附过程符合准二级动力学方程；吸附等温线用Freundlich方程拟合的结果优于Langmuir方程,H2N-SiO2对Cu2+和pb2+的理论最大吸附量分别为76.0和143mg/g;H2N-SiO2对50mg/L水溶液中pb2+的去除率可达99.4％,重复使用3次后对pb2+的去除率保持在87.8％.
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