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题名: Pore-size tunable mesoporous zirconium organophosphonates with chiral (L)-proline for enzyme adsorption
作者: Shi, Xin;  Liu, Jian;  Li, Congming;  Yang, Qihua
刊名: INORGANIC CHEMISTRY
发表日期: 2007-09-17
DOI: 10.1021/ic700892z
卷: 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
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.
关键词[WOS]: SULFATE WATER-SYSTEM ;  ALUMINUM ORGANOPHOSPHONATES ;  MOLECULAR-SIEVES ;  CATIONIC SURFACTANT ;  PHASE-DIAGRAM ;  PHOSPHATE ;  PHOSPHONATES ;  MYOGLOBIN ;  PROTEINS ;  MCM-41
语种: 英语
WOS记录号: WOS:000249371500037
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140573
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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

Recommended Citation:
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.
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