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Abstract: Iron ions have been immobilized on TiO2/HNTs with poly-o-phenylenediamine and poly-m-phenylenediamine simultaneously by ion imprinting technology. The ion imprinting photocatalysts have been characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra, UV-VIS diffuse reflectance spectra (UV-VIS DRS), and inductively coupled plasma-atomic (optical) emission spectrometry (ICP-AES). The results demonstrated that there existed POPD and PMPD in photocatalysts. ICP-AES proved that there were iron ions in the samples compared to TiO2/HNTs. The photocatalytic activity of ion imprinting photocatalysts was studied by the degradation of tetracycline wastewater under visible light irradiation. The results showed that it was more conducive to polymerization of monomers at pH=3. The optimum mass ratio of OPD: MPD was 4:1, and the optimum value of iron ion was 0.01 g. The photodegradation rate of 40 mg L-1 tetracyclinesimulated wastewater could reach 75.96%
Template and target information: iron ions, Fe(III), ferric ion
Author keywords: conducting polymer, Ion imprinting technology, Iron ions, Tetracycline, TiO 2, hnts