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Pore-size tunable mesoporous zirconium organophosphonates with chiral (L)-proline for enzyme adsorption
Shi, Xin; Liu, Jian; Li, Congming; Yang, Qihua
刊名INORGANIC CHEMISTRY
2007-09-17
DOI10.1021/ic700892z
46期:19页:7944-7952
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Inorganic & Nuclear
研究领域[WOS]Chemistry
关键词[WOS]SULFATE WATER-SYSTEM ; ALUMINUM ORGANOPHOSPHONATES ; MOLECULAR-SIEVES ; CATIONIC SURFACTANT ; PHASE-DIAGRAM ; PHOSPHATE ; PHOSPHONATES ; MYOGLOBIN ; PROTEINS ; MCM-41
英文摘要Mesoporous zirconium organciphosphonates with a tunable mesopore (pore diameter: from 4.8 to 16.3 nm) were synthesized through co-condensation of ZrCl4 and 1-phosphomethylproline (H3PMP) with the aid of organic additives in the presence of an anionic surfactant (sodium dodecyl sulfate) under weak acidic conditions. The organic additives, tetrahydrofuran, can effectively strengthen the assembly of ZrCl4 and H3PMP around the surfactant micelles through decreasing the hydrolysis and condensation rate of ZrCl4. The results of the N-2 sorption isotherm and SEM image show that zirconium phosphate with a bimodal structure is formed by calcination of mesoporous zirconium organophosphonate. Mesoporous zirconium organophosphonates can effectively adsorb lysozyme (Lz),and papain, and the adsorption equilibrium for Lz can be reached within 30 min. The adsorption capacity for Lz and papain can reach as high as 438 and 297 mg/g, respectively. Furthermore, Lz adsorbed on mesoporous zirconium organophosphonates can retain its structural conformation as in its free state, and no leaching of Lz from the solid was observed when shaking the Lz-loaded solid in a buffer solution. Also, the existence Of L-proline in the mesopore could help the adsorption of papain at a pH value lower than the p/ of papain.
语种英语
WOS记录号WOS:000249371500037
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140573
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Liaoning Normal Univ, Dept Chem, Inst Chem Functionalized Mat, Dalian 116029, Peoples R China
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GB/T 7714
Shi, Xin,Liu, Jian,Li, Congming,et al. Pore-size tunable mesoporous zirconium organophosphonates with chiral (L)-proline for enzyme adsorption[J]. INORGANIC CHEMISTRY,2007,46(19):7944-7952.
APA Shi, Xin,Liu, Jian,Li, Congming,&Yang, Qihua.(2007).Pore-size tunable mesoporous zirconium organophosphonates with chiral (L)-proline for enzyme adsorption.INORGANIC CHEMISTRY,46(19),7944-7952.
MLA Shi, Xin,et al."Pore-size tunable mesoporous zirconium organophosphonates with chiral (L)-proline for enzyme adsorption".INORGANIC CHEMISTRY 46.19(2007):7944-7952.
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