Preparation of PANI–TiO2 nanocomposites and their solid-phase photocatalytic degradation
By Liuxue Zhang, Peng Liu, Zhixing Su. 2006
244 citations recorded by the source corpus.
A series of polyaniline-anatase TiO2 (PANI-TiO2) nanocomposite powders with different PANI:TiO2 ratios were prepared by 'in-situ' deposition oxidative polymerization of aniline hydrochloride using ammonium persulfate (APS) as oxidant in the presence of ultrafine grade powder of anatase TiO2 cooled in an ice bath. And the solid-phase photocatalytic degradation of PANI-TiO2 nanocomposites was investigated under the ambient air in order to assess the feasibility of developing photodegradable polymers. The photodegradation of the composite powders was compared with that of pure PANI powders by performing weight loss monitoring, elemental analysis, FT-IR and UV-vis spectroscopy and X-ray photoelectron spectroscopy (XPS). The PANT-TiO2 nanocomposite powders showed highly enhanced photodegradation and the photodegradation increased with decreasing ratios of PANI:TiO2. A weight loss of about 6.8% was found for the PANI-TiO2 (1:3) nanocomposite; however, the weight loss of the PANI-HCl powder was only 0.3% after being irradiated for 60 It under air. The photocatalytic degradation of the nanocomposite powders accompanied the peak intensity decrease in the FT-IR spectra at 1235 cm(-1), attributed to C-N stretching mode for benzenoid unit, and the depigmentation of the powders due to the visible light scattering from growing cavities. The elemental analysis and XPS analysis of the composite showed that the bulk and surface concentrations of N decreased with irradiation. A possible mechanism for the photocatalytical oxidative degradation was also mentioned. (c) 2006 Elsevier Ltd. All fights reserved.
View Paper: https://www.semanticscholar.org/paper/d209d4e84f65f9f47e6c98fc947c69fdc5384a73
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Citations in the corpus
- Thermal Decomposition Behavior of Poly (Vinyl Alcohol) with Different Hydroxyl Content (2012, methodology): “[ 6 – 10 , 11 ] Hybrid materials of the CPs and inorganic nanoparticles have been used as photo-catalysts in our laboratory and others, with results indicating that those hybrids are effective photo-catalysts.”
- A review on conducting polymer coatings for corrosion protection (2016, background): “Titanium dioxide (TiO2) is an important inorganic material in preparing conducting polymer composites due to its excellent physical and chemical properties, as well as extensive applications diverse areas, such as coatings, solar cells, and photocatalysts.[189,190] A composite film of zinc and carbo”