Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/248
Title: Highly efficient photocatalytic activity of stable manganese-doped zinc oxide (Mn:ZnO) nanofibers via electrospinning method
Authors: Baylan, Elif
Altıntaş Yıldırım, Özlem
Keywords: Photocatalytic Activity
Zno Fiber
Mn Doped
Photocatalyst
Reusable
Uv
Visible Light
Room-Temperature Synthesis
Zno Nanoparticles
Composite Nanofibers
Mn
Degradation
Water
Performance
Transition
Nanorods
Dyes
Issue Date: 2019
Publisher: ELSEVIER SCI LTD
Abstract: Manganese-doped zinc oxide (Mn:ZnO) nanofibers were synthesized using the electrospinning process. Structural, chemical, morphological and optical properties of the nanofibers were characterized and compared with undoped ZnO nanofibers. To investigate photocatalytic activity of nanofibers under the both UV and visible light, methylene blue (MB) was used as a representative dye pollutant. It was found that substitutional incorporation of Mn2+ and Mn4+ ions in ZnO resulted in the generation of additional energy levels within the band gap of ZnO. Furthermore, higher manganese incorporation resulted in smaller-sized Mn:ZnO nanoparticles with highly concave-convex structures, and consequently, an increase in surface area. Substitutional incorporation of the dopant ions and the resulting morphological variations provide better photocatalytic efficiency due to formation of a greater number of charge carriers and the corresponding delay in the recombination process. Among the studied dopant content, 0.5 at.% Mn:ZnO fibers was determined as the optimal composition and the degradation of MB can reach about similar to 100% after 90 min. UV light and similar to 35% after 100 min visible light illumination. The doped fibers displayed high stability and durability in the degradation tests, even after ten cycles. Mn:ZnO nanofibers are thus good candidate materials for photocatalytic applications with superior efficiencies and highly reusable properties.
URI: https://doi.org/10.1016/j.mssp.2019.104621
https://hdl.handle.net/20.500.13091/248
ISSN: 1369-8001
1873-4081
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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