高比表面磁性有序介孔炭的合成及对亚甲基蓝的吸附性能  

Preparation of high specific surface area magnetic ordered mesoporous carbons and adsorption property of methylene blue

作　　者：田勇[1] 钟国英[1] 王秀芳[1] 林汉森[1] 

机构地区：[1]广东药学院药科学院,广东广州510006

出　　处：《化工学报》2012年第12期4082-4088,共7页CIESC Journal

基　　金：国家自然科学基金项目(50802017);广东省高等学校高层次人才项目(2011年度);广东省自然科学基金项目(S2012010009416);广东高校优秀青年创新人才培养计划项目(2012LYM_085);广东省科技计划项目(2012B020316007)~~

摘　　要：具有高比表面积、大孔容的铁磁性有序介孔炭(Fe/OMCs)对含染料废水的处理提供了一种简单有效的方法。采用苯酚树脂作炭源,三嵌段共聚物F127为模板剂,正硅酸乙酯为硅前驱体,硝酸铁为磁源,通过软模路线合成了Fe/OMCs。利用X射线衍射仪(XRD),氮气吸附仪,透射电镜(TEM)和综合物性测试仪研究了硝酸铁加入量对Fe/OMCs的相态、孔结构参数和磁性的影响;并以亚甲基蓝(MB)为染料探针分子,研究了Fe/OMCs对MB的吸附行为。结果表明材料有序性、比表面和孔容随着硝酸铁加入量的增加而降低,而饱和磁化强度明显增强。Fe/OMCs对MB有快速吸附能力,其行为符合Sips吸附方程。Magnetic Fe-containing ordered mesoporous carbons（Fe/OMCs）with high surface area and large pore volume provide an easy and effective way for the treatment of dye in waste water.Fe/OMCs were synthesized by the soft-template route,wherein phenolic resin was used as a carbon precursor,triblock copolymer F127 as a template agent,tetraethylorsilicate（TEOS）as a silica precursor and hydrated iron nitrate as an iron source.The effects of Fe（NO3）3·9H2O loading on the morphology,structural parameters,and magnetic properties of the Fe/OMCs were evaluated by X-ray diffraction（XRD）,N2 sorption analysis,transmission electron microscopy（TEM）and physical property measurements.By using methylene blue（MB）as model dye,the adsorption of MB on the obtained Fe/OMCs was investigated.The experimental results showed that the ordering,specific surface area and total pore volume decreased with the increase of Fe（NO3）3·9H2O loading.The Fe/OMCs had fast adsorption ability for MB.The adsorption of MB on the obtained Fe/OMCs followed the Sips adsorption equation and the corresponding parameters were obtained.

关 键 词：有序介孔炭 合成 吸附 亚甲基蓝 

分 类 号：O647[理学—物理化学] TQ424.1[理学—化学]