Effect of pore structure of SBA-15 on immobilization of hemoglobin

被引：8

作者：

Zhou, Li-Hui ^{[1
,2
]}

Tao, Ying-Hua ^{[1
,2
]}

Hu, Jun ^{[1
,2
]}

Han, Xia ^{[1
,2
]}

Liu, Hong-Lai ^{[1
,2
]}

Hu, Ying ^{[1
,2
]}

机构：

[1] E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

[2] E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

来源：

JOURNAL OF POROUS MATERIALS | 2008年 / 15卷 / 06期

基金：

中国国家自然科学基金;

关键词：

SBA-15; Mesoporous structure; Hemoglobin; Immobilization; Binding; Leaching;

D O I：

10.1007/s10934-007-9146-y

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Immobilization of hemoglobin (Hb) in SBA-15 with various pore sizes by physical adsorption was studied. The structure changes of mesoporous SBA-15 before and after the immobilization of Hb were characterized by N-2 adsorption isotherms, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and Ultraviolet-visible spectroscopy (UV). The results indicate that SBA-15 is a good support for the immobilization of Hb due to its regular structure, large pore diameter, and high surface area. After immobilization of Hb, the regular structure of SBA-15 is still kept, but the pore diameter, pore volume and surface area decrease. With the increase of pore size, the binding amount and leaching amount of Hb increase. There is a maximum binding amount of Hb up to 355.2 mg/g (SBA-15) when pore size is 8.9 nm. It is suggested that the immobilization of Hb depends significantly on the pore size of SBA-15.

引用

页码：653 / 659

页数：7

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