巢状多层中空多孔SiO2材料的模板法合成及其吸附活性的研究  

Templated Synthesis of Nest-like Hierarchial Hollow Porous SiO2 with High Adsorption Activity

作　　者：李刚 刘靖 顾冬雨 Li Gang;Liu Jing;Gu Dongyu(School of Marine Science and Environment Dalian Ocean University,Dalian 116023,China)

机构地区：[1]大连海洋大学海洋科技与环境学院

出　　处：《广东化工》2019年第24期14-15,13,共3页Guangdong Chemical Industry

基　　金：辽宁省教育厅科学研究项目(L201618)

摘　　要：本文利用一种简便的双模板法合成了具有类似鸟巢状多层结构的中空多孔SiO2材料。采用MCH作为模板剂,CTAB作为结构导向剂,制备出的SiO2材料除了具有模板剂的多层形态,同时具有空心、大孔及中孔结构。研究其吸附活性发现该材料具有较高的比表面积(最高为990 m2/g),对有机染料具有较大的吸附量和较快的吸附速率。In this letter, we presented a facile dual-template method for synthesizing nest-like hierarchical hollow porous SiO2. In this strategy, theMg5(CO3)4(OH)2·4H2O (MCH) , CTAB were used as recyclable template and structure-directing agent, respectively. The product retains the hierarchical morphologyof hard template, and possesses hollow, macroporous, mesoporous structures, and a high surface area(up to 990 m2/g). Moreover, the as-prepared sample exhibitedsuperior adsorption capacity and rateof organic dye. Such SiO2 materials will be very useful for adsorbent and catalysts support due to the high surface area andaccessibility of active sites.

关 键 词：中空多孔SiO2材料 模板法 吸附活性 

分 类 号：TQ[化学工程]