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Enhanced Photodegradation of Hazardous Tartrazine by Composite of Nanomolecularly Imprinted Polymer-Nanophotocatalyst With High Efficiency Publisher



Arabzadeh N1, 3 ; Khosravi A2 ; Mohammadi A3, 4 ; Mahmoodi NM5
Authors
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Authors Affiliations
  1. 1. Department of Chemistry, Amirkabir University of Technology, Hafez St, Tehran, 15875-4413, Iran
  2. 2. Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Hafez St, Tehran, 15875-4413, Iran
  3. 3. Faculty of Pharmacy, Department of Drug and Food Control, Tehran University of Medical Sciences, Enghelab St., Tehran, 14155-6451, Iran
  4. 4. Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Enghelab St., Tehran, 14155-6451, Iran
  5. 5. Department of Environmental Research, Institute for Color Science and Technology, Hossein Abad Sq, Tehran, 16688-14811, Iran

Source: Desalination and Water Treatment Published:2016


Abstract

In this research, a nanocomposite of molecularly imprinted polymer (MIP)-nanophotocatalyst for enhanced photodegradation of tartrazine with high efficiency and nanocomposite of non-imprinted polymer (NIP)-nanophotocatalyst were synthesized by precipitation polymerization and it was carried out in an aqueous medium to employ a green method. Acrylamide as functional monomer, N,Nʹ-methylene-bis-acrylamide as cross-linking agent, tartrazine as a template, and TiO2 as a nanophotocatalyst were used. The synthesized nanocomposites (MIP-TiO2 and NIP-TiO2) were characterized by using thermal gravimetric analysis, scanning electron microscopy, transmission electron microscopy, and Fourier transform infrared spectroscopy. The MIP nanocomposite as an effective sorbent was used to extract and photodegrade tartrazine from water media. The effects of pH, time, and concentration of tartrazine solution and kinetics of photodegradation of tartrazine were investigated. The best pH and the optimum time for tartrazine photodegradation in a 10 ml solution containing tartrazine (3 × 10−5M) and nanocomposite (1 mg) were obtained to be 2 and 5 h, respectively. The results showed that the MIP nanocomposite has improved the photodegradation of tartrazine by 100% compared to NIP nanocomposite and pure nanophotocatalyst which yielded at 63 and 56%, respectively, under the same condition. © 2014 Balaban Desalination Publications. All rights reserved.
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