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Reference type: Journal
Authors: Su HJ, Li Q, Tan TW
Article Title: Double-functional characteristics of a surface molecular imprinted adsorbent with immobilization of nano-TiO2.
Publication date: 2006
Journal: Journal of Chemical Technology & Biotechnology
Volume: 81
Issue: (11)
Page numbers: 1797-1802.
DOI: 10.1002/jctb.1606
Alternative URL: http://www3.interscience.wiley.com/cgi-bin/abstract/113385506/ABSTRACT?CRETRY=1&SRETRY=0

Abstract: A new chitosan molecular imprinted adsorbent obtained by immobilization of nano-TiO2 on the adsorbent surface (surface-imprinted adsorbent with nano-TiO2) was prepared. Based on photocatalytic reaction and the surface molecular imprinting technology, this new kind of surface-imprinted adsorbent with immobilization of nano-TiO2 can not only adsorb template metal ions but can also degrade organic pollutants. The results showed that, after the nano-TiO2 was immobilized on the adsorbent surface, the adsorption ability for the imprinted ion (Ni2+) of this new imprinted adsorbent immobilized with nano-TiO2 was not affected, but the degradation ability for p-nitrophenol (PNP) of the surface-imprinted adsorbent with nano-TiO2 increased three-fold compared with that of the surface-imprinted adsorbent without nano-TiO2, from 23.8 to 76.1% (at an initial PNP concentration of 20 mgdm-3). The optimal TiO2 concentration in the adsorbent preparation was 0.025 gTiO2 g-1 adsorbent. The removal capacity for PNP reached 60.25 mgg-1 (at 400 mgdm-3 initial PNP concentration) under UV irradiation. The surface-imprinted adsorbent with nano-TiO2 can be reused for at least five cycles without decreasing the removal ability for PNP and the imprinted ion (Ni2+). Copyright 2006 Society of Chemical Industry
Template and target information:
Author keywords: Heavy metal ions, Nano-TiO2, photocatalytic reaction, p-nitrophenol, surface molecular imprinting

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