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化学气相沉积法合成Fe/CMK-5及其对溶菌素的吸附性能
  • 期刊名称:《物理化学学报》,2010, 26(6), 1593-1598
  • 时间:0
  • 分类:O647[理学—物理化学;理学—化学]
  • 作者机构:[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
  • 相关基金: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
  • 相关项目:多组分金属/半导体纳米结的合成及光催化分解水制氢的研究
中文摘要:

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.

英文摘要:

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.

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