Investigation the Photocatalytic Performance of Aligned Titanium Dioxide Nanotubes in an Organic Pollutant Solution Containing Hydrogen Peroxide

Document Type : Research Article

Authors

1 Caspian Faculty of Engineering, College of Engineering, University of Tehran, P.O. Box 43861-56387 Rezvanshahr, I.R. IRAN

2 Fouman Faculty of Engineering, College of Engineering, University of Tehran, P.O. Box 43516-66456 Fouman, I.R. IRAN

Abstract

In this study, orderly and aligned titanium dioxide nanotubes were synthesized by two-step anodic oxidation process in the ethylene glycol-based electrolyte containing ammonium fluoride and distilled water. In order to investigate the effect of hydrogen peroxide (H2O2) on the TiO2 nanotubes structure and photocatalytic properties, the photocatalytic degradation of 2,4-dichlorophenol was performed in two cases regarding the presence and absence of H2O2 in the pollutant solution. The effect of H2O2 on the TiO2 nanotubes structure and their photocatalytic properties were evaluated using a Field Emission Scanning Electron Microscope (FESEM) and UV-Vis spectrophotometer device. The results indicated that the H2O2 Presence in the pollutant solution had a significant effect on the TiO2 nanotubes photocatalytic properties. H2O2 presence in the pollutant solution led to the destruction of the tubular structure of TiO2 nanotubes and consequently decreased the photocatalytic performance of titanium dioxide nanotubes. Adding 2mL of hydrogen peroxide to the pollutant solution cause to a decrease in the pollutant degradation from 50% (in the absence of H2O2) to 8%.

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References

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Nashrieh Shimi va Mohandesi Shimi Iran
Volume 36, Issue 4 - Serial Number 86
December 2017
Pages 137-144

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