Preparation and enhanced photocatalytic activity of Co/F codoped tin oxide nanotubes/nanowires: a wall thickness-dependence study

Aligned Co/F codoped tin oxide (SnO 2 ) nanotubes/nanowires with high photocatalytic activity were successfully prepared via the liquid-phase deposition (LPD) process by immersing the anodic aluminum oxide template in a (NH 4 ) 2 SnF 6 aqueous solution. The mechanism proposed for the formation of Co...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2019-11, Vol.125 (11), p.1-14, Article 768
Main Author: Sadeghzadeh-Attar, Abbas
Format: Article
Language:English
Subjects:
Aluminum oxide
Applied physics
Aqueous solutions
Catalytic activity
Characterization and Evaluation of Materials
Cobalt
Condensed Matter Physics
Dependence
Light irradiation
Liquid phase deposition
Liquid phases
Machines
Manufacturing
Materials science
Methylene blue
Morphology
Nanoparticles
Nanotechnology
Nanotubes
Nanowires
Optical and Electronic Materials
Organic compounds
Photocatalysis
Photodegradation
Physics
Physics and Astronomy
Process parameters
Processes
Surfaces and Interfaces
Thin Films
Tin dioxide
Tin oxides
Wall thickness
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Summary:Aligned Co/F codoped tin oxide (SnO 2 ) nanotubes/nanowires with high photocatalytic activity were successfully prepared via the liquid-phase deposition (LPD) process by immersing the anodic aluminum oxide template in a (NH 4 ) 2 SnF 6 aqueous solution. The mechanism proposed for the formation of Co/F codoped SnO 2 nanotubes/nanowires was discussed. The results showed that the morphology can be controlled by the careful manipulation of process parameters. The Co/F codoped SnO 2 first nucleated on the alumina membrane walls and then grew inwards, filling the nanoholes until nanotubes were obtained. By prolonging the deposition period up to 240 min, nanowires were also obtained. The photocatalytic behavior of the products was evaluated based on the photodegradation of methylene blue (MB) as a model organic compound under visible-light irradiation. The Co/F codoped SnO 2 nanotubes fabricated at 25 °C for 240 min exhibited the highest photocatalytic activity. In addition, the degradation of MB with the Co/F codoped SnO 2 nanotubes/nanowires confirmed improved photocatalytic performance compared to that of commercial SnO 2 nanoparticles and SnO 2 nanotubes.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-019-2994-x