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题名: Morphological and structural evolution of mesoporous silicas in a mild buffer solution and lysozyme adsorption
作者: Liu, Jian;  Li, Congming;  Yang, Qihua;  Yang, Jie;  Li, Can
通讯作者: 杨启华
刊名: LANGMUIR
发表日期: 2007-06-19
DOI: 10.1021/la7003134
卷: 23, 期:13, 页:7255-7262
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 506,503
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Multidisciplinary ;  Chemistry, Physical ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Materials Science
英文摘要: Mesoporous silicas with various morphologies and structures were synthesized with the aid of 2,2,4-trimethylpentane (TMP) in the presence of nonionic surfactant P123 [(EO)(20)(PO)(70)(EO)(20)] as a structure-directing agent under mild reaction conditions (HAc-NaAc buffer solution, pH 4.4). The ropelike particles formed by end-to-end interconnected nanorods were obtained at a TMP/P123 weight ratio of 0.5. It is noteworthy to mention that the mesoporous nanorods have channels running parallel to the short axis. The silica hollow spheres can be obtained at a higher TMP/P123 weight ratio because of the fusion of the primary nanorods around the interface of the O/W emulsion. Initial synthesis temperatures of 15, 25, and 40 degrees C can lead to mesoporous silicas with highly ordered 2D hexagonal mesostructure, vesicular mesostructure, and mesostructured cellular foams (MCF), respectively. The mesoporous silicas exhibit high adsorption capacity (up to 536 mg g(-1)) and very rapid (<5 min to reach equilibrium) lysozyme immobilization. More importantly, it is revealed that mesoporous silica hollow spheres with rugged surfaces can greatly accelerate the adsorption rate of the enzyme during the adsorption process.
关键词[WOS]: SILICEOUS HOLLOW SPHERES ;  MOLECULAR-SIEVES ;  HYDROTHERMAL STABILITY ;  HIERARCHICAL ORDER ;  SBA-15 ;  IMMOBILIZATION ;  COPOLYMERS ;  MECHANISM ;  VESICLES ;  PORES
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000247145300055
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/98833
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.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Liu, Jian,Li, Congming,Yang, Qihua,et al. Morphological and structural evolution of mesoporous silicas in a mild buffer solution and lysozyme adsorption[J]. LANGMUIR,2007,23(13):7255-7262.
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