铃铛型Fe_3O_4/C磁性多孔碳微球的合成及其吸附性能研究
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- 英文论文题名：Synthesis and adsorption ability of rattle-type Fe_3O_4/C magnetic particles
- 论文作者：张小乐 ; 麻彬彬 ; 李小刚 ; 王巍杰
- 英文论文作者：Xiaole Zhang ; Binbin Ma ; Xiaogang Li ; Weijie Wang ; College of Life Science ; North China University of Science and Technology
- 年：2016
- 作者机构：华北理工大学生命科学学院;
- 论文关键词：多孔碳 ; 磁性 ; 铃铛型 ; 吸附性能
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十六分会：环境化学
- 语种：中文
- 分类号：TQ424
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十六分会 ; 环境化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：199k
- 原文格式：D
- 会议级别：全国
摘要
多孔碳具有比表面积大、制备简单等特点,是应用较为广泛的吸附材料。将其与磁性纳米材料相结合制得磁性多孔碳复合材料,即可在其吸附目标物后,通过外加磁场快速从母液中回收以便重复利用。本研究首先在Fe_3O_4磁性颗粒表面包覆硅胶,然后利用天然多酚类物质-单宁酸与Fe3+的络合聚合反应在其表面快速形成聚多酚复合物层,最后在通N2条件下高温碳化并利用氨水将中间的硅胶层溶解后,得到了铃铛型Fe_3O_4/C磁性多孔碳微球。其Fe_3O_4核心赋予了材料磁分离能力,而其铃铛型结构进一步提高了复合材料的吸附性能。此外,利用聚多酚替代酚醛树脂或聚苯乙烯等高分子聚合物作为碳源,不仅反应时间大大缩短,反应条件更为温和,而且避免了合成过程中有机溶剂的使用,制备成本也更为低廉。
Porous carbon,with high surface area and perfect stability,has been widely used as adsorbent.Magnetic porous carbon complex,obtained by combination with magnetic particle,can be readily isolated from matrix with an external magnet for reuse after adsorption.In this research,silica was coated onto Fe_3O_4 nanoparticles,followed by the coating of polyphenol polymer through the fast complex polymerization between the natural polyphenol-tannins and Fe3+.After carbonation under 500 oC in N2 and dissolution of silica layer,rattle-type Fe_3O_4/C magnetic microspheres were achieved.The Fe_3O_4 core endows the material with magnetic separation ability and the rattle like structure further enhances the adsorption ability.In addition,the reaction is mild and fast and organic solvent is avoided by changing synthetic polymer such as phenolic resin or polystyrene with polyphenol as carbon source.
Porous carbon,with high surface area and perfect stability,has been widely used as adsorbent.Magnetic porous carbon complex,obtained by combination with magnetic particle,can be readily isolated from matrix with an external magnet for reuse after adsorption.In this research,silica was coated onto Fe_3O_4 nanoparticles,followed by the coating of polyphenol polymer through the fast complex polymerization between the natural polyphenol-tannins and Fe3+.After carbonation under 500 oC in N2 and dissolution of silica layer,rattle-type Fe_3O_4/C magnetic microspheres were achieved.The Fe_3O_4 core endows the material with magnetic separation ability and the rattle like structure further enhances the adsorption ability.In addition,the reaction is mild and fast and organic solvent is avoided by changing synthetic polymer such as phenolic resin or polystyrene with polyphenol as carbon source.
引文
[1]Zeng,T.;Zhang,X.;Guo,Y.;Niu,H.;Cai,Y.J.Mater.Chem.A 2014,2:14807.
[2]Li,X.;Gai,F.;Guan,B.;Zhang,Y.;Liu,Y.;Huo,Q.J.Mater.Chem.A 2015,3:3988.
[2]Li,X.;Gai,F.;Guan,B.;Zhang,Y.;Liu,Y.;Huo,Q.J.Mater.Chem.A 2015,3:3988.