文献类型：期刊文献

中文题名：高吸附性能介孔磁性复合碳球的制备

英文题名：Preparation of mesoporous magnetic composite carbon spheres with high adsorption properties

作者：韩金玲[1];陈葵[1];武斌[1];纪利俊[1];吴艳阳[1];朱家文[1]

机构：[1]华东理工大学化工学院,上海200237

年份：2020

卷号：37

期号：4

起止页码：689

中文期刊名：精细化工

外文期刊名：Fine Chemicals

收录：CSTPCD;;EI(收录号：20201808594968);Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

语种：中文

中文关键词：磁性复合碳球;硅前驱体;介孔;吸附;红霉素;功能材料

外文关键词：magnetic composite carbon spheres;silicon precursor;mesoporous;adsorption;erythromycin;functional materials

摘要：以正硅酸乙酯(TEOS)为硅前驱体,间苯二酚-甲醛树脂(RF)为碳源,在表面活性剂十六烷基三甲基溴化铵(CTAB)的辅助作用下,采用原位聚合法制备了介孔磁性复合碳球Fe3O4@C-M。考察了醇水比〔V(乙醇)∶V(水)〕、表面活性剂用量、TEOS用量和水热温度(HT)对碳球的形貌、粒径和表面孔结构的影响。在84 mL乙醇/水混合液〔V(乙醇)∶V(水)=3∶4〕、CTAB 0.6 g、TEOS 4 mL、水热温度100℃下制备得到Fe3O4@C-M,采用TEM、XRD、XPS、BET、TGA、VSM对其进行表征。结果表明,Fe3O4@C-M的比表面积为553m^2/g,较不引入硅前驱体时制备的磁性复合碳球Fe3O4@C-0增大1.7倍,介孔孔容占比由18%增大到83%。考察Fe3O4@C-M对红霉素的吸附性能,饱和吸附量为255 mg/g;用乙酸正丁酯对吸附后材料进行再生,5次循环再生后吸附量维持在初始吸附量的85%以上。
Mesoporous magnetic composite carbon spheres Fe3O4@C-M were prepared by in-situ polymerization using tetraethyl orthosilicate(TEOS) as silicon precursor, resorcinol-formaldehyde resin(RF) as carbon source under the assistance of surfactant, cetyltrimethyl ammonium bromide(CTAB). The effects of ethanol-water ratio [V(ethanol)∶V(water)], CTAB dosage, TEOS dosage and hydrothermal temperature(HT) on the morphology, particle size and surface structure of carbon spheres were investigated. Fe3O4@C-M was prepared in 84 m L ethanol/water mixture [V(ethanol)∶V(water)=3∶4], 0.6 g CTAB, 4 mL TEOS, hydrothermal temperature 100 ℃. The sample was characterized by TEM, XRD, XPS, BET, TGA, and VSM. The results showed that the specific surface area of Fe3O4@C-M was 553 m^2/g, increased 1.7 times compared with that of the magnetic composite carbon spheres Fe3O4@C-0 prepared without introduction of the silicon precursor. Moreover, the mesoporous pore volume ratio increased from 18% to 83%. At the same time, the adsorption property of erythromycin on Fe3O4@C-M was investigated. And the saturated adsorption capacity of erythromycin was 255 mg/g. The Fe3O4@C-M could be regenerated with n-butyl acetate, and the adsorption capacity of erythromycin maintained over 85% of the initial adsorption capacity after five cycles of regeneration.