Synthesis of anatase TiO2 nanotubes derived from a natural leucoxene mineral by the hydrothermal method

Anatase TiO2 nanotubes were synthesized from a natural leucoxene mineral by the hydrothermal method at 105°C over a period of 24h. The prepared samples were calcined at various temperatures from 100 to 1000°C in air for 2h. The samples were characterized by X-ray diffraction (XRD), energy-dispersive...

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Published in:Ceramics international 2014, Vol.40 (7), p.9241-9247
Main Authors: Aphairaj, Deaw, Wirunmongkol, Thanakorn, Niyomwas, Sutham, Pavasupree, Sorapong, Limsuwan, Pichet
Format: Article
Language:English
Subjects:
Anatase
Ceramics
Hydrothermal
Leucoxene
Minerals
Nanoparticles
Nanotube
Nanotubes
Roasting
Titanium dioxide
X-ray diffraction
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container_issue 7
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container_title Ceramics international
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creator Aphairaj, Deaw
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description Anatase TiO2 nanotubes were synthesized from a natural leucoxene mineral by the hydrothermal method at 105°C over a period of 24h. The prepared samples were calcined at various temperatures from 100 to 1000°C in air for 2h. The samples were characterized by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), thermogravimetry-differential thermal analysis (TG-DTA), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and Brunauer–Emmett–Teller (BET) analysis to determine the specific surface area. The XRD patterns revealed that the as-synthesized samples were titanate (H2Ti3O7) nanotubes. The as-synthesized samples calcined at 400°C showed anatase TiO2 with inner and outer diameters of ~6nm and 16nm, respectively, and lengths in the range of 20–100nm. The BET surface area of the anatase TiO2 nanotubes was ~82.98m2/g. The photocatalytic activity of the anatase TiO2 nanotubes was observed to be higher than that of commercial anatase TiO2 nanoparticles (JRC-01).
doi_str_mv 10.1016/j.ceramint.2014.01.145
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subjects Anatase
Ceramics
Hydrothermal
Leucoxene
Minerals
Nanoparticles
Nanotube
Nanotubes
Roasting
Titanium dioxide
X-ray diffraction
title Synthesis of anatase TiO2 nanotubes derived from a natural leucoxene mineral by the hydrothermal method
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