Efficient photocatalytic degradation of methylene blue dye by SnO^sub 2^ nanotubes synthesized at different calcination temperatures

A template-based liquid phase deposition was applied to fabricate SnO2 nanotube arrays. The prepared SnO2 nanotube photocatalysts were characterized using X-ray diffraction (XRD), field-emission electron microscopy (FE-SEM), transmission electron microscope (TEM), UV–Vis absorb spectrum, and Brunaue...

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Bibliographic Details
Published inSolar energy materials and solar cells Vol. 183; p. 16
Main Author Sadeghzadeh-Attar, A
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier BV 15.08.2018
Subjects
Catalytic activity
Crystallization
Dyes
Electron microscopy
Light
Liquid phase deposition
Methylene blue
Nanotechnology
Nanotubes
Photocatalysis
Photodegradation
Roasting
Tin
Tin dioxide
Transmission electron microscopy
Ultraviolet radiation
Wall thickness
X-ray diffraction
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Summary:A template-based liquid phase deposition was applied to fabricate SnO2 nanotube arrays. The prepared SnO2 nanotube photocatalysts were characterized using X-ray diffraction (XRD), field-emission electron microscopy (FE-SEM), transmission electron microscope (TEM), UV–Vis absorb spectrum, and Brunauer-Emmett-Teller (BET) measurements. The results showed that the well-crystalled rutile-SnO2 nanotube arrays with an inner diameter of about 60 nm and a wall thickness of about 20 nm can be fabricated at calcination temperature of 600 °C. In addition, the photocatalytic activity of the SnO2 nanotubes calcined at different temperatures for degradation of methylene blue (MB) dye under UV light illumination was investigated. The results clearly indicated that the samples calcined at 600 °C exhibited the highest photocatalytic activity, which makes them ideal for applications in environmental remediation. It was suggested that the enhanced photocatalytic efficiency of the SnO2 nanotubes may be due to their high specific surface area as-well-as their increased crystallinity with increasing calcination temperature. On the basis of the characterization results, we proposed a possible mechanism for the photocatalytic degradation on SnO2 nanotubes.
ISSN:0927-0248