摘要
以3-巯丙基-三甲氧基硅烷为有机功能试剂,采用后接枝法,合成了巯基功能化的介孔材料HS-Zr-La-SBA-15(HS-ZLS)。修饰后的样品不仅保持了高度有序的SBA-15的二维六角结构,而且具有较高的热稳定性,较大的比表面、孔容和较窄的孔径分布。考察了HS-ZLS介孔分子筛对阳离子染料孔雀石绿和罗丹明B的吸附性能。实验结果表明,该吸附剂对两种阳离子染料均具有良好的吸附性能,吸附平衡快,吸附容量高。实验还表明该吸附剂对两种染料的吸附动力学均符合准二级动力学模型,吸附等温线符合Langmuir单分子层吸附模型。
Thiol-functionalized mesoporous materials HS-ZLS were respectively synthesized by a post-grafting procedure using 3-mercaptopropyl trimethoxysilane as organic modifiers.The synthesized materials still maintained inherent long-range ordered twodimensional hexagonal channel structure of the mesoporous materials and possessed higher thermostability,bigger specific surface area and pore volume,and narrower pore size distribution.Adsorption performances of thiol- functionlized Zr-La-SBA-15( ZLS) mesoporous sieve to cationic dyes Malachite green and Rhodamine B were investigated and it was found that the adsorbent possessed excellent adsorption properties including fast adsorption equilibrium and high adsorption capacities. The results also showed that the adsorption kinetics of the adsorbent to the two dyes obeyed pseudo-second-order kinetic model and the adsorption isotherms obeyed Langmuir monomolecular layer adsorption model.
作者
刘婧
张建辉
冷艳丽
慕红梅
张榕芳
杨武
LIU Jing;ZHANG Jian-hui;LENG Yan-li;MU Hong-mei;ZHANG Rong-fang;YANG Wu(Department of Food and Chemical Engineering,Gansu College of Agriculture Technology ,Lanzhou 730020, China;School of Chemical Engineering,Guizhou Minzu University , Guiyang 550025 , China;Department of Applied Chemical Engineering, Lanzhou Resources & Environment Voc-Tech College, Lanzhou 730021 , China;College of Chemistry and Chemical Engineering, Northwest Normal University , Lanzhou 730070, China)
出处
《化学试剂》
CAS
北大核心
2019年第7期668-674,共7页
Chemical Reagents
基金
甘肃省高等学校科研项目(2015A-196,2018A-213)
兰州资源环境职业技术学院校级课题项目(Z2016-04)
甘肃农业职业技术学院科研流动站项目(2017)
关键词
介孔材料
功能化
阳离子染料
吸附
mesoporous materials
functionalization
cationic dyes
adsorption
