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Periodic mesoporous organosilicas with 1,4-diethylenebenzene in the mesoporous wall: Synthesis, characterization, and bioadsorption properties
Li, Congming; Liu, Jian; Shi, Xin; Yang, Jie; Yang, Qihua
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2007-07-26
DOI10.1021/jp071093a
111期:29页:10948-10954
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science
关键词[WOS]MOLECULAR-SCALE PERIODICITY ; COPOLYMER-ASSISTED SYNTHESIS ; BRIDGING GROUPS ; BENZENE-SILICA ; ORGANIC GROUPS ; IMMOBILIZATION ; ADSORPTION ; ENZYMES ; SIEVES ; LYSOZYME
英文摘要The 1,4-diethylenebenzene-bridged mesoporous organosilicas and bifunctional periodic mesoporous organosilicas with various amounts of 1,4-diethylenebenzene and ethane bridging groups in the mesoporous wall were synthesized by a direct cocondensation method using P123 as structure-directing agent under acidic conditions. All the materials have ordered mesostructure with uniform pore size distributions. The BET surface area and pore diameter decrease as the amounts of 1,4-diethylenebenzene in the mesoporous wall increase. The composition of the mesoporous organosilicas was characterized by FT-IR, C-13 cross-polarization magic-angle spinning (CP-MAS) NMR, and Si-29 magic-angle spinning (MAS) NMR spectroscopy. The adsorption of lysozyme (Lz) on the resultant materials was studied at different pH values. All the adsorption isotherms have successfully been correlated by the Langmuir equation. The adsorption capacity of all materials reaches the maximum around the isoelectric point of Lz. It was found that the material with mixed composition of 1,4-diethylenebenzene and ethane in the wall exhibits higher adsorption amounts than the mesoporous ethane-silica, and the difference in the adsorption amounts between the two materials decreases as the solution pH increases, suggesting that the hydrophobic and hydrogen-bonding interaction between 1,4-diethylenebenzene and Lz is stronger than that between ethane and Lz, especially at lower pH value. FT-IR spectra of the adsorbed Lz confirm that the adsorption of Lz did not lead to the denaturation of enzyme in the pH range investigated.
语种英语
WOS记录号WOS:000248121600029
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被引频次:52[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140729
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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GB/T 7714
Li, Congming,Liu, Jian,Shi, Xin,et al. Periodic mesoporous organosilicas with 1,4-diethylenebenzene in the mesoporous wall: Synthesis, characterization, and bioadsorption properties[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2007,111(29):10948-10954.
APA Li, Congming,Liu, Jian,Shi, Xin,Yang, Jie,&Yang, Qihua.(2007).Periodic mesoporous organosilicas with 1,4-diethylenebenzene in the mesoporous wall: Synthesis, characterization, and bioadsorption properties.JOURNAL OF PHYSICAL CHEMISTRY C,111(29),10948-10954.
MLA Li, Congming,et al."Periodic mesoporous organosilicas with 1,4-diethylenebenzene in the mesoporous wall: Synthesis, characterization, and bioadsorption properties".JOURNAL OF PHYSICAL CHEMISTRY C 111.29(2007):10948-10954.
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