Application of PANI/TiO2 Composite for Photocatalytic Degradation of Contaminants from Aqueous Solution
Open Access
- 25 September 2020
- journal article
- research article
- Published by MDPI AG in Applied Sciences
- Vol. 10 (19), 6710
- https://doi.org/10.3390/app10196710
Abstract
Polyaniline (PANI) is a promising conducting polymer for surface modification of TiO2 to achieve extended photoresponse to visible light and increased photocatalytic efficiency. In this study, we report the synthesis of a PANI/TiO2 composite with different weight ratios of PANI, which was subsequently employed for photocatalytic degradation of methylene blue (MB), bisphenol A (BPA), and bacteriophage MS2 under visible-light irradiation. The functional groups, morphology, and light response of the composite were characterized by Fourier-transform infrared spectroscopy, field-emission transmission electron microscopy, and diffuse reflectance UV–visible spectroscopy, respectively. The PANI/TiO2 composite containing 4% by weight ratio of PANI was most suitable for MB degradation, and this photocatalyst was very stable even after repeated use (four cycles). The degradation of BPA and bacteriophage MS2 by PANI/TiO2 composite reached 80% in 360 min and 96.2% in 120 min, respectively, under visible-light irradiation. Therefore, the PANI/TiO2 composite with enhanced visible-light photocatalytic efficiency and stability can be widely used for the degradation of water contaminants.Funding Information
- Ajou University (Ajou University Research Fund)
This publication has 30 references indexed in Scilit:
- Bi-Polymer Electrospun Nanofibers Embedding Ag3PO4/P25 Composite for Efficient Photocatalytic Degradation and Anti-Microbial ActivityCatalysts, 2020
- Photocatalytic degradation of neonicotinoid insecticides using sulfate-doped Ag3PO4 with enhanced visible light activityChemical Engineering Journal, 2020
- Porous Electrospun Fibers Embedding TiO2 for Adsorption and Photocatalytic Degradation of Water PollutantsEnvironmental Science & Technology, 2018
- Probing effective photocorrosion inhibition and highly improved photocatalytic hydrogen production on monodisperse PANI@CdS core-shell nanospheresApplied Catalysis B: Environmental, 2016
- Conducting polymer nanostructures for photocatalysis under visible lightNature Materials, 2015
- Polypyrrole-Decorated Ag-TiO2 Nanofibers Exhibiting Enhanced Photocatalytic Activity under Visible-Light IlluminationACS Applied Materials & Interfaces, 2013
- Surface modification of TiO2 photocatalyst for environmental applicationsJournal of Photochemistry and Photobiology C: Photochemistry Reviews, 2012
- Preparation, characterization and photocatalytic activity of TiO2/polyaniline core-shell nanocompositeBulletin of Materials Science, 2012
- Photocatalytic degradation of methyl orange using polythiophene/titanium dioxide compositesReactive and Functional Polymers, 2010
- Electrochemical Photolysis of Water at a Semiconductor ElectrodeNature, 1972