Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (06): 1593-1598.doi: 10.3866/PKU.WHXB20100614

• CATALYSIS AND SURFACE STRUCTURE • Previous Articles     Next Articles

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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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