十六烷基和3-氨丙基双改性的SBA-15材料对壬基酚的吸附性能研究  

Adsorption of NP from Water by bifunctionalized SBA-15

作　　者：全凤[1] 刁习 胡芸[1] 韦朝海[1] 

机构地区：[1]华南理工大学环境与能源学院,工业聚集区污染控制与生态修复教育部重点实验室,广州510006

出　　处：《化工新型材料》2016年第7期76-78,共3页New Chemical Materials

基　　金：国家自然科学基金项目(21277051,21037001);广州市科技计划(12C62081602)项目

摘　　要：采用十六烷基三甲氧基硅烷和3-氨丙基三甲氧基硅烷作为改性剂对SBA-15分子筛进行表面改性,制备出双官能化吸附剂十六烷基/3-氨丙基-SBA-15。用XRD、FT-IR、N2吸附/脱附、元素分析等手段对所制备材料进行结构表征,结果表明官能化后的SBA-15仍保留长程有序的六方介孔结构,十六烷基和3-氨丙基基团均成功负载到SBA-15表面。以壬基酚作为目标污染物,考察了所制备材料的吸附性能。研究结果表明,十六烷基/3-氨丙基-SBA-15的吸附容量高于十六烷基-SBA-15、3-氨丙基-SBA-15和未改性的SBA-15,这归因于双官能化吸附剂表面的十六烷基与壬基酚之间的疏水化作用力和3-氨丙基与壬基酚之间的氢键、离子键作用力的协同作用。SBA-15 was functionalized with hexadecyltrimethoxysilane and 3-aminopropyltrimethoxysilane.The prepared sample were characterized by XRD,FT-IR,N2 adsorption-desorption and element analysis.The results confirmed that the functionalized SBA-15 still reserved long-range order hexagonal mesostructure.Cetyl and aminopropyl groups were simultaneously functionalized on the surface of SBA-15.NP was used as target pollutant to evaluate the adsorption property of sample.The adsorption capacity of cetyl/amino-SBA-15 was much higher than that of cetyl-SBA-15 and amino-SBA-15,due to the cooperative effect of hydrogen bond/electrostatic interaction between 4-nonylphenol and aminopropyl groups and hydrophobic interaction between 4-nonylphenol and cetyl groups.

关 键 词：疏水改性 SBA-15 双官能化 吸附 

分 类 号：O647.3[理学—物理化学]