Synthesis and characterization of ordered mesoporous silica (SBA-15 and SBA-16) for adsorption of biomolecules

被引：94
|
作者：
Lopes dos Santos, Sandra Maria [1 ]
Barros Nogueira, Karina Alexandre [1 ]
Gama, Marlon de Souza [1 ]
Ferreira Lima, Jeann Diniz [1 ]
da Silva Junior, Ivanildo Jose [1 ]
Silva de Azevedo, Diana Cristina [1 ]
机构：
[1] Univ Fed Ceara, Dept Engn Quim, BR-60455760 Fortaleza, Ceara, Brazil
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2013年 / 180卷
关键词：
Separation; Adsorption isotherm; Protein; Enzyme; Silica; BOVINE SERUM-ALBUMIN; FUNCTIONALIZED SBA-15; PORE-SIZE; PROTEIN ADSORPTION; CATALYTIC-ACTIVITY; IN-SITU; LYSOZYME; TRIBLOCK; SEPARATION; COPOLYMER;
D O I：
10.1016/j.micromeso.2013.06.043
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The present work describes the adsorption of biomolecules (bovine serum albumin (BSA), lysozyme (LYS) and cellulase (CEL)) on ordered mesoporous silicas with different pore diameters (SBA-15 and SBA-16) from buffered solutions. These adsorbents were synthesized by sol-gel and hydrothermal routes and characterized by X-ray diffraction, N-2 adsorption/desorption isotherms and transmission electron microscopy (TEM). The results by X-ray diffraction and TEM show that the synthesized materials have distinct degrees of mesoporous ordering. The influence of pH on the adsorption of BSA, LYS and CEL as well the kinetics and adsorption isotherms were evaluated in stirred tanks. Among the materials studied, hydrothermally synthesized SBA-15 showed the highest maximum adsorption capacity of BSA and LYS (329 and 636 mg/g, respectively). CEL was best adsorbed in SBA-15 synthesized by the sol-gel route. (C) 2013 Elsevier Inc. All rights reserved.
引用
收藏
页码：284 / 292
页数：9
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