物理化学学报 >> 2010, Vol. 26 >> Issue (06): 1593-1598.doi: 10.3866/PKU.WHXB20100614

催化和表面结构 上一篇    下一篇

化学气相沉积法合成Fe/CMK-5及其对溶菌素的吸附性能

曹银娣, 党利琴, 白丹, 雷志斌, 刘美英   

  1. 辽宁师范大学化学化工学院, 功能材料化学研究所, 辽宁 大连 116029
  • 收稿日期:2009-12-21 修回日期:2010-03-16 发布日期:2010-05-28
  • 通讯作者: 雷志斌, 刘美英 E-mail:myliu312@yahoo.com; zblei@lnnu.edu.cn

Adsorption of Lysozymes on Fe/CMK-5 Composites Synthesized by Chemical Vapor Deposition

CAO Yin-Di, DANG Li-Qin, BAI Dan, LEI Zhi-Bin, LIU Mei-Ying   

  1. Institute of Chemistry for Functionalized Materials, Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, Liaoning Province, P. R. China
  • Received:2009-12-21 Revised:2010-03-16 Published:2010-05-28
  • Contact: LEI Zhi-Bin, LIU Mei-Ying E-mail:myliu312@yahoo.com; zblei@lnnu.edu.cn

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摘要：

以SBA-15为模板, 二茂铁为碳源,利用化学气相沉积(CVD)法合成了Fe/CMK-5复合材料. 用粉末X射线衍射、低温N2吸附、热重分析、透射电镜等对复合材料进行了表征. 结果表明复合材料中碳以CMK-5结构存在, Fe颗粒均匀地分布在CMK-5的骨架中, 通过调节CVD时间可改变Fe/CMK-5的结构参数. 在pH值为11的缓冲溶液中研究了Fe/CMK-5系列复合材料对溶菌素(lysozyme)的吸附性能, 考察了溶菌素在Fe/CMK-5孔道内部的结构稳定性以及在不同pH值溶液中的泄露量.

关键词: 吸附, Fe/CMK-5复合材料, 中孔碳, 化学气相沉积, 溶菌素

Abstract:

Fe/CMK-5 composites were synthesized by chemical vapor deposition (CVD) using ferrocene as carbon precursor and SBA-15 as silica template. The composites were characterized by powder X-ray diffraction (XRD), N2 adsorption, thermogravimetric analysis (TGA) and transmission electron microscopy (TEM). We found that the carbon in the composites existed as CMK-5, while the metallic Fe nanoparticles were homogenously embedded in the framework of mesoporous carbon. The textural parameters of the Fe/CMK-5 composites could be adjusted in a facile manner by changing the CVD duration time. The obtained Fe/CMK-5 composites were applied as adsorbents for the adsorption of lysozymes (Lzs) in the buffer solution at a pHof 11. The stabilities of the Lzs confined in the mesopores of the Fe/CMK-5 composites were investigated and the Lz leakage from the Fe/CMK-5 composite was also measured in buffer solutions with different pH values.

Key words: Adsorption, Fe/CMK-5 composites, Mesoporous carbon, Chemical vapor deposition, Lysozyme