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Reference type: Journal
Authors: Luo YY, Lu ZY, Jiang YH, Wang DD, Yang LL, Huo PW, Da ZL, Bai XL, Xie XL, Yang PY
Article Title: Selective photodegradation of 1-methylimidazole-2-thiol by the magnetic and dual conductive imprinted photocatalysts based on TiO2/Fe3O4/MWCNTs.
Publication date: 2014
Journal: Chemical Engineering Journal
Volume: 240
Page numbers: 244-252.
DOI: 10.1016/j.cej.2013.11.088
Alternative URL: http://www.sciencedirect.com/science/article/pii/S1385894713015660

Abstract: The magnetic and dual conductive imprinted photocatalysts (MCIPs) were synthesized through the suspension polymerization method. TiO2/Fe3O4/MWCNTs, 1-methylimidazole-2-thiol and pyrrole were used as supports, template molecule and functional monomer, respectively. The MCIPs were further characterized by X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), scanning electron microscopy (SEM), transmission electron microscope (TEM), UVGă˘visible diffuse reflectance spectra (UVGă˘vis DRS), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM). The result revealed that polypyrrole (PPy) was formed and well embedded in the surface imprinted layer of TiO2/Fe3O4/MWCNTs. Owing to PPy and MWCNTs, the MCIPs was equipped with dual conductivity which was particularly useful for photodegradation of 1-methylimidazole-2-thiol in aqueous solution under ultraviolet irradiation. Through a series investigation of factors, it was obvious that when the polymerization time was 24 h and the adding dose of pyrrole was 8 mmol, the resulting MCIPs obtained the highest photocatalytic ability. In addition, the photodegradation process obeyed the pseudo-first-order kinetic reaction and exhibited an excellent selective degradation ability of 1-methylimidazole-2-thiol. The degradation intermediate products and mechanism of 1-methylimidazole-2-thiol were further discussed
Template and target information: 1-methylimidazole-2-thiol
Author keywords: 1-Methylimidazole-2-thiol, conducting polymer, Dual conductive system, Magnetic carbon nanotubes, Selective photodegradation, surface molecular imprinting


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