Synthesis and lysozyme adsorption of rod-like large-pore periodic mesoporous organosilica

Qiao, S. Z., Djojoputro, Hiannie, Hu, Qiuhong and Lu, G. Q. (2006) Synthesis and lysozyme adsorption of rod-like large-pore periodic mesoporous organosilica. Progress in Solid State Chemistry, 34 2-4: 249-256. doi:10.1016/j.progsolidstchem.2005.11.023


Author Qiao, S. Z.
Djojoputro, Hiannie
Hu, Qiuhong
Lu, G. Q.
Title Synthesis and lysozyme adsorption of rod-like large-pore periodic mesoporous organosilica
Journal name Progress in Solid State Chemistry   Check publisher's open access policy
ISSN 0079-6786
1873-1643
Publication date 2006-07
Sub-type Article (original research)
DOI 10.1016/j.progsolidstchem.2005.11.023
Volume 34
Issue 2-4
Start page 249
End page 256
Total pages 8
Editor Clement Sanchez
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Abstract Highly ordered rod-like large-pore periodic mesoporous organosilica (PMO) was successfully synthesized at low acid concentration with the assistance of inorganic salt using triblock copolymer P123 as a template. The roles of inorganic salt and acidity in the production of highly ordered mesostructure and the morphology control of PMOs were investigated. It was found that the inorganic salt can significantly widen the range of the synthesis parameters to produce highly ordered 2D hexagonal pore structure of p6mm symmetry. However, the uniform rod-like PMOs can only be synthesized in a narrow range of acid and salt concentrations, which were sensitive to induction time. The adsorption of lysozyme on PMO was studied at different pH values in comparison with adsorption on pure silica material under controlled morphology and pore structure. It was found that the adsorption capacity of lysozyme on the PMO was lower than that on pure SBA-15 silica material and the adsorption amounts are larger at pH 9.6 than at 7.0 for both materials. The results show that the electrostatic interaction between lysozyme and PMO/SBA-15 surface is more dominant than the hydrophobic forces and the interaction of neighboring lysozyme molecules also plays an important role.
Keyword Chemistry, Inorganic & Nuclear
Catalytic-activity
Molecular-sieves
Cytochrome-c
Immobilization
Enzymes
Polysilsesquioxanes
Hybrid
Silica
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Special issue title: Advanced Functional Nanomaterials - from NanoscaleObjects to Nanostructered Inorganic and Hybrid Materials

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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Created: Mon, 03 Oct 2011, 16:51:52 EST by Ms Chun Xiang Cynthia Lin on behalf of School of Chemical Engineering