Molecular imprinting and adsorption of metallothionein on nanocrystalline titania membranes

Metallothionein (MT) imprinted TiO 2 membrane was synthesized via surface sol–gel process, using MT as template and TiO 2 sol as imprinted matrix. Appropriate template cavities in the TiO 2 sol–gel membrane were formed after the template molecules were removed on treatment with 1% NaOH solution. In...

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Bibliographic Details
Published in:Applied surface science 2008-05, Vol.254 (15), p.4457-4461
Main Authors: Cai, Zhen-Feng, Dai, Hong-Juan, Si, Shi-Hui, Ren, Feng-Lian
Format: Article
Language:English
Subjects:
Chemistry
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Electrochemistry
Electrodes: preparations and properties
Exact sciences and technology
General and physical chemistry
Materials science
Materials synthesis
materials processing
Metallothionein (MT)
Molecular imprinting
Nanocrystalline titania
Physics
Quartz crystal microbalance
Sol-gel processing, precipitation
Solid surfaces and solid-solid interfaces
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
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Summary:Metallothionein (MT) imprinted TiO 2 membrane was synthesized via surface sol–gel process, using MT as template and TiO 2 sol as imprinted matrix. Appropriate template cavities in the TiO 2 sol–gel membrane were formed after the template molecules were removed on treatment with 1% NaOH solution. In situ technique of quartz crystal microbalance (QCM) was employed to study the molecular imprinting behavior of MT on nanocrystalline titania membranes. The imprinted membrane showed selectivity recognition for MT as compared to the other proteins. The amount of adsorption increased with the increasing of MT concentration both on imprinted membrane and non-imprinted membrane. The adsorption amount increased with the increasing of pH on imprinted membrane.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2008.01.015