化学气相沉积法合成Fe/CMK-5及其对溶菌素的吸附性能  

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

作　　者：曹银娣[1] 党利琴[1] 白丹[1] 雷志斌[1] 刘美英[1] 

机构地区：[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

出　　处：《物理化学学报》2010年第6期1593-1598,共6页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(20803033);教育部留学回国人员科研启动基金;辽宁省教育厅基金(2008348)资助项目~~

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.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 pH of 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.

关 键 词：吸附 Fe/CMK-5复合材料 中孔碳 化学气相沉积 溶菌素 

分 类 号：O647.3[理学—物理化学]