img
Preparation of PANI Modified ZnO Composites via Different Methods: Structural, Morphological and Photocatalytic Properties       
Yazarlar
Doç. Dr. Ümit Nazlı TÜRKTEN Doç. Dr. Ümit Nazlı TÜRKTEN
Kırşehir Ahi Evran Üniversitesi, Türkiye
Prof. Dr. Yunus KARATAŞ Prof. Dr. Yunus KARATAŞ
Kırşehir Ahi Evran Üniversitesi, Türkiye
Fatma Miray Bekbölet
Türkiye
Özet
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 (similar to 95% for both methods) as compared to sole ZnO (similar to 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.
Anahtar Kelimeler
Hybridization method | In-situ chemical oxidation polymerization method | Methylene blue | PANI-ZnO | Photocatalysis | Polyaniline
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı WATER
Dergi ISSN 2073-4441
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q2
Makale Dili Türkçe
Basım Tarihi 04-2021
Cilt No 13
Sayı 8
Sayfalar 1025 / 1025
Doi Numarası 10.3390/w13081025
Makale Linki http://dx.doi.org/10.3390/w13081025