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Anodic TiO2 nanotube: influence of annealing temperature on the photocatalytic degradation of carbamazepine

Anodic TiO2 nanotube: influence of annealing temperature on the photocatalytic degradation of... The effect of annealing temperature on the morphology, structure, and photocatalytic response of TiO2 nanotubular prepared by anodization of a pure titanium foil was investigated. The anodization was carried out in a glycerol/H2O/NH4F electrolyte at room temperature, with two-electrode configurations. The morphology and structure of the nanotubes were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy. The results revealed that the annealing temperature affects strongly the morphology, the crystallinity, and the phase composition of the TiO2 nanotubes. The as-anodized TiO2 nanotube layers present an amorphous structure and the crystallization to the anatase phase begins at 400 °C. In addition, the rutile phase was observed at 600 °C. Of the anatase phase, 83.3% is transformed into rutile when annealing temperature increases from 400 to 700 °C. It is found that the phase composition of TiO2 impacts directly the photocatalytic degradation of the carbamazepine. The high photocatalytic activity was reached when the mixture of anatase and rutile exhibited a composition of about 56.3% and 43.7%, respectively. Increasing solution pH from 4 to 10 increases the degradation efficiency from 74.6 to 83%. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Australian Ceramic Society Springer Journals

Anodic TiO2 nanotube: influence of annealing temperature on the photocatalytic degradation of carbamazepine

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References (65)

Publisher
Springer Journals
Copyright
Copyright © The Author(s) under exclusive licence to Australian Ceramic Society 2022
ISSN
2510-1560
eISSN
2510-1579
DOI
10.1007/s41779-022-00752-z
Publisher site
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Abstract

The effect of annealing temperature on the morphology, structure, and photocatalytic response of TiO2 nanotubular prepared by anodization of a pure titanium foil was investigated. The anodization was carried out in a glycerol/H2O/NH4F electrolyte at room temperature, with two-electrode configurations. The morphology and structure of the nanotubes were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy. The results revealed that the annealing temperature affects strongly the morphology, the crystallinity, and the phase composition of the TiO2 nanotubes. The as-anodized TiO2 nanotube layers present an amorphous structure and the crystallization to the anatase phase begins at 400 °C. In addition, the rutile phase was observed at 600 °C. Of the anatase phase, 83.3% is transformed into rutile when annealing temperature increases from 400 to 700 °C. It is found that the phase composition of TiO2 impacts directly the photocatalytic degradation of the carbamazepine. The high photocatalytic activity was reached when the mixture of anatase and rutile exhibited a composition of about 56.3% and 43.7%, respectively. Increasing solution pH from 4 to 10 increases the degradation efficiency from 74.6 to 83%.

Journal

Journal of the Australian Ceramic Society – Springer Journals

Published: Sep 1, 2022

Keywords: Anodization; Carbamazepine; Photocatalyst; Titanium dioxide; TiO2 nanotubes

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