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Reference type: Journal
Authors: Deng F, Li YX, Luo XB, Yang LX, Tu XM
Article Title: Preparation of conductive polypyrrole/TiO2 nanocomposite via surface molecular imprinting technique and its photocatalytic activity under simulated solar light irradiation.
Publication date: 2012
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume: 395
Issue: (0)
Page numbers: 183-189.
DOI: 10.1016/j.colsurfa.2011.12.029
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0927775711007758

Abstract: Conductive polypyrrole/TiO2 nanocomposites were successfully prepared by surface molecular imprinting technique (MIP-PPy/TiO2) using methyl orange as template molecule. The samples were characterized by means of SEM, XRD, BET and UV-vis diffuse reflectance spectroscopy. Compared with conductive polypyrrole/TiO2 nanocomposites which were prepared by in situ method (Control-PPy/TiO2), the absorption edge of MIP-PPy/TiO2 red-shifts 10 nm, indicating that the band gap energy of MIP-PPy/TiO2 is narrower than Control-PPy/TiO2. Moreover, MIP-PPy/TiO2 nanocomposites show higher adsorption capacity and selectivity for template molecule than Control-PPy/TiO2 nanocomposites, and the photocatalytic activity of MIP-PPy/TiO2 is two times of Control-PPy/TiO2, which is attributed to the introduction of the imprinted cavities on the surface of MIP-PPy/TiO2 nanocomposites. Therefore, surface molecular imprinting method may be considered as a novel technology for the preparation of PPy/TiO2
Template and target information: methyl orange
Author keywords: Surface molecular imprinting technique, Polypyrrole, TiO2 nanocomposite, Methyl orange, Photocatalytic activity, Simulated solar light

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