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Fabrication and photocatalytical properties of anodic TiO2 nanotubes decorated with magnetite nanoparticles

Authors: Beketova Darya | Motola Martin | Sopha Hanna Ingrid | Čičmancová Veronika | Dvořák Filip | Hromádko Luděk | Macák Jan

Year: 2019

Type of publication: ostatní - přednáška nebo poster

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
eng	Fabrication and photocatalytical properties of anodic TiO2 nanotubes decorated with magnetite nanoparticles	In recent years, many basic principles have been developed to improve and optimize TiO2-based materials as photocatalysts. Herein, we demonstrated new solvothermal oleate approach for the fabrication of TiO2 1D anodized nanotubes decorated with Fe3O4 nanoparticles. The as-prepared samples revealed enhanced photocatalytical activity in photodegradation of methylene blue under visible light irradiation. According to recent studies [1, 2], double-walled nanotubes, containing secondary layer of electrolyte deposition, display lower degradation rate in comparison to single-walled samples. Therefore, single-walled TiO2 nanotube composites were shown to have the highest rate constants, namely, 0.41ּּּ 10-2 and 0.48 10-2 min-1, compared to non-decorated nanotubes. Increase in concentration of the Fe3O4 nanoparticles in 3 times leads to growth of particle size from 20 to 30 nm and formation of bunches and beads. For these samples, the photocatalytic activity reduced due to unavailable surface area. Based on these data, we can conclude, that the resulted TiO2 composite materials produced with a low amount of Fe3O4 nanoparticles could perform as promising magnetically-guidable, low-cost, environmentally-friendly photocatalysts [3]. 1. Mirabolghasemi H., Liu N., Lee K., Schmuki P. Chem. Commun. 2013, 49, 2067–2069. 2. Motola M., Sopha H., Krbal M., Hromadko L., Olmrova Zmrhalova Z., Plesch G., Macak J.M. Electrochem. Commun. 2018, 97, 1-5 3. D. Beketova et al., Ms in preparation.