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Article

Preparation of PANI Modified ZnO Composites via Different Methods: Structural, Morphological and Photocatalytic Properties

1
Department of Chemistry, Faculty of Arts and Sciences, Kirsehir Ahi Evran University, Kirsehir 40100, Turkey
2
Institute of Environmental Sciences, Bogazici University, Bebek, Istanbul 34342, Turkey
*
Author to whom correspondence should be addressed.
Academic Editor: Pei Xu
Water 2021, 13(8), 1025; https://doi.org/10.3390/w13081025
Received: 10 March 2021 / Revised: 30 March 2021 / Accepted: 6 April 2021 / Published: 8 April 2021
(This article belongs to the Special Issue New Perspectives in Photocatalytic Water Treatment)
Polyaniline modified zinc oxide (PANI-ZnO) photocatalyst composites were synthesized by focusing on dissolution disadvantage of ZnO. In-Situ chemical oxidation polymerization method was performed under neutral conditions (PANI-ES) whereas in hybridization method physical blending was applied using emeraldine base of polyaniline (PANI-EB). PANI-ZnO composites were prepared in various ratios of aniline (ANI) to ZnO as 1%, 3%, 6% and 9%. The alterations on the structural and morphological properties of PANI-ZnO composites were compared by Fourier Transform Infrared (FT-IR), Raman Spectroscopy, X-ray Diffraction (XRD) and Scanning Electron Microscopy-Energy Dispersive X-ray Analysis Unit (SEM-EDAX) techniques. FT-IR and Raman spectroscopy confirmed the presence of PANI in all composites. SEM images revealed the morphological differences of PANI-ZnO composites based on PANI presence and preparation methods. Photocatalytic performances of PANI-ZnO specimens were investigated by following the degradation of methylene blue (MB) in aqueous medium under UVA irradiation. The effects of catalyst dose and initial dye concentration were also studied. MB degradation was followed by both decolorization extents and removal of aromatic fractions. PANI-ZnO composites expressed enhanced photocatalytic performance (~95% for both methods) as compared to sole ZnO (~87%). The hybridization method was found to be more efficient than the In-Situ chemical oxidation polymerization method emphasizing the significance of the neutral medium. View Full-Text
Keywords: hybridization method; In-Situ chemical oxidation polymerization method; methylene blue; PANI-ZnO; photocatalysis; polyaniline hybridization method; In-Situ chemical oxidation polymerization method; methylene blue; PANI-ZnO; photocatalysis; polyaniline
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MDPI and ACS Style

Turkten, N.; Karatas, Y.; Bekbolet, M. Preparation of PANI Modified ZnO Composites via Different Methods: Structural, Morphological and Photocatalytic Properties. Water 2021, 13, 1025. https://doi.org/10.3390/w13081025

AMA Style

Turkten N, Karatas Y, Bekbolet M. Preparation of PANI Modified ZnO Composites via Different Methods: Structural, Morphological and Photocatalytic Properties. Water. 2021; 13(8):1025. https://doi.org/10.3390/w13081025

Chicago/Turabian Style

Turkten, Nazli; Karatas, Yunus; Bekbolet, Miray. 2021. "Preparation of PANI Modified ZnO Composites via Different Methods: Structural, Morphological and Photocatalytic Properties" Water 13, no. 8: 1025. https://doi.org/10.3390/w13081025

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