Visible light-induced photocatalytic and antibacterial activity of TiO2/polyaniline-kapok fiber nanocomposite

Anatase TiO 2 nanoparticles with an average crystallite size of around 6.06 nm were successfully immobilized on the surface of polyaniline-coated kapok fiber (PANI-KpF) via hydrothermal reaction. The photocatalytic activity of the TiO 2 /PANI-KpF nanocomposite was studied under visible light using m...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2022-06, Vol.79 (6), p.3891-3910
Main Authors: Gapusan, Rontgen B., Balela, Mary Donnabelle L.
Format: Article
Language:English
Subjects:
Anatase
Catalytic activity
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Composite materials
Crystallites
Dyes
E coli
Ethanol
Hydrothermal reactions
Investigations
Morphology
Nanocomposites
Nanoparticles
Organic Chemistry
Original Paper
Photocatalysis
Photodegradation
Physical Chemistry
Pollutants
Polyanilines
Polymer Sciences
Polymerization
Scanning electron microscopy
Soft and Granular Matter
Spectrum analysis
Stainless steel
Titanium
Titanium dioxide
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Summary:Anatase TiO 2 nanoparticles with an average crystallite size of around 6.06 nm were successfully immobilized on the surface of polyaniline-coated kapok fiber (PANI-KpF) via hydrothermal reaction. The photocatalytic activity of the TiO 2 /PANI-KpF nanocomposite was studied under visible light using methyl orange (MO) and Cr(VI) as model pollutants. Photodegradation of MO was achieved using nanocomposites prepared with 0.5 and 1.0 mL titanium isopropoxide (TTIP) with removal efficiencies of about 87.4 and 76.8%, respectively. These are about 13 and 18% higher than the removal efficiencies under dark conditions. On the other hand, visible light-induced photo-reduction of Cr(VI) was carried out in the presence of isopropanol (IPA) as a hole scavenger, with 100% removal efficiency. Without IPA, Cr(VI) was removed by adsorption. The TiO 2 /PANI-KpF also showed antibacterial activity against E. coli bacteria under visible light.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-021-03679-w