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Adsorption and photocatalytic degradation of methyl orange imprinted composite membranes using TiO2/calcium alginate hydrogel as matrix

Paper ID Volume ID Publish Year Pages File Format Full-Text
54077 46995 2014 8 PDF Available
Title
Adsorption and photocatalytic degradation of methyl orange imprinted composite membranes using TiO2/calcium alginate hydrogel as matrix
Abstract

•TiO2/calcium alginate membrane was prepared by cross-linking the mixture of sodium alginate and TiO2 in aqueous solution.•MO imprinted membrane (MIP) was synthesized using TiO2/calcium alginate as the matrix, silanes as the monomers.•The adsorption capacity had significant effect on the degradation of MO.•MIP degradated more MO than NIP did and gave good selectivity for the photodegradation of MO.

In this paper, molecularly imprinted TiO2/calcium alginate (T/CA) membrane was synthesized by using T/CA as supporting matrix, ethylenetri(β-methoxy) ethyoxysilane (KH-570) and γ-amidopropyltri- ethyoxysilane (KH-550) as functional monomers and methyl orange (MO) as template. The T/CA membranes and MO imprinted T/CA composite membranes were characterized by SEM, FT-IR and XRD. The adsorption and photocatalytic degradation of MO imprinted membranes were investigated. The results indicated that the process of dispersion in alginate and sol-gel of silanes did not have influence on the crystallization process of nano-TiO2 particles. MO was adsorbed more and faster by the molecularly imprinted membrane (MIP) than the non-imprinted membrane (NIP). Also, MIP showed good selectivity for photodegradation of MO when using MR as competitive molecules.

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Keywords
Titanium dioxide; Photocatalytic degradation; Methyl orange; Alginate; Molecular imprinting membrane; Adsorption
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Adsorption and photocatalytic degradation of methyl orange imprinted composite membranes using TiO2/calcium alginate hydrogel as matrix
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 236, Part A, 1 November 2014, Pages 127–134
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us