Abstract
Titania nanotubes (TiO2-NTs) were prepared from anatase TiO2 nanopowder with a crystallite size of 90 nm by a hydrothermal method followed by ion exchange. The obtained TiO2-NTs were filled with NiFe2O4 quantum dots (QDs) and subjected to hydrogen at 600°C to produce TiO2-NTs filled with Ni-Fe nanoalloy. Filling TiO2-NTs with NiFe2O4 quantum dots shifted the absorption edge of the nanotubes to the visible region, narrowing the band gap of TiOx-NTs. The modified TiO2-NTs were investigated for the degradation of toxic dyes for water treatment. These TiO2NTs offered high degrees of photodegradation of the organic dyes with high visible light activity. They also were a promising corrosion inhibitor. The electrical conductivity-temperature dependences of empty anatase TiO2-NTs, anatase TiO2-NTs filled with NiFe2O4 QDs, anatase TiO2-NTs filled with Ni-Fe nanoalloy and NiFe2O4 compact disks were measured in the temperature range 25-850°C. The modified TiO2-NTs were also tested for CO2 sensing.
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Mohassab-Ahmed, M.Y., Moustafa, A.F., Farghali, A.A., Sohn, H.Y., Khedr, M.H. (2014). TiO2 Nanotubes Filled with NiFe2O4 Quantum Dots or Ni-Fe Nanoalloy: Synthesis and Applications. In: TMS 2014: 143rd Annual Meeting & Exhibition. Springer, Cham. https://doi.org/10.1007/978-3-319-48237-8_5
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DOI: https://doi.org/10.1007/978-3-319-48237-8_5
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48593-5
Online ISBN: 978-3-319-48237-8
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