effective nanocomposite of polyaniline and ZnO: preparation, characterizations, and its photocatalytic activity

The polyaniline/zinc oxide (PANI/ZnO) nanocomposites were prepared by in situ polymerization of aniline monomer with ZnO nanomaterials and applied as a photocatalyst for the degradation of methylene blue (MB) dye. The morphological observations elicited the agglomerations of PANI sheets which occurr...

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Bibliographic Details
Published in:Colloid and polymer science 2011-02, Vol.289 (4), p.415-421
Main Authors: Ameen, Sadia, Akhtar, M. Shaheer, Kim, Young Soon, Yang, O-Bong, Shin, Hyung-Shik
Format: Article
Language:English
Subjects:
Applied sciences
Catalysis
Catalysts: preparations and properties
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Composites
Degradation
Dyes
Exact sciences and technology
Food Science
Forms of application and semi-finished materials
General and physical chemistry
methylene blue
Nanocomposites
Nanomaterials
Nanostructure
Nanotechnology and Microengineering
Original Contribution
Photocatalysis
Photocatalytic degradation
Physical Chemistry
Polyaniline
Polyanilines
Polymer industry, paints, wood
Polymer Sciences
Soft and Granular Matter
Technology of polymers
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Zinc oxide
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Summary:The polyaniline/zinc oxide (PANI/ZnO) nanocomposites were prepared by in situ polymerization of aniline monomer with ZnO nanomaterials and applied as a photocatalyst for the degradation of methylene blue (MB) dye. The morphological observations elicited the agglomerations of PANI sheets which occurred due to the interaction between PANI and ZnO nanomaterials in PANI/ZnO nanocomposites. As compared to pristine PANI, the UV-vis spectra exhibited that the absorption peak of π-π* transitions considerably shifted to higher wavelength at 360 nm from 325 nm in the nanocomposites. The photocatalytic activity results indicated the substantial degradation of MB dye by ~76% over the surface of PANI/ZnO nanocomposite catalyst under light illumination. The PANI/ZnO nanocomposites showed three times higher photocatalytic activity to MB dye degradation compared to pristine PANI might due to high photogenerated electron (ē)-hole (h⁺) pairs charge separation.
ISSN:0303-402X
1435-1536
DOI:10.1007/s00396-010-2350-3