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Enhanced optical and photo catalytic properties of V and La co doped TiO2 nanoparticles

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Abstract

To enhance the visible photo-catalytic activity of TiO2, La/V co-doped TiO2 materials were synthesized through a nonaqueous method of which the purpose was to reduce the aggregation between TiO2 particles. Different samples of La and V co-doped TiO2 nanoparticles were prepared through simple sol–gel synthesis method by using Vanadium(III) chloride as V precursor, Lanthanum(III) chloride heptahydrate as La precursor, and titanium (IV) butoxide (TBT) as titanium precursor. The effects of co-doping content on the structural, optical, and photo-catalytic properties of nanoparticles have been studied by X-ray diffraction (XRD), TEM, SEM and UV–Vis absorption spectroscopy. XRD results suggest that adding impurities has a great effect on the crystallinity and particle size of TiO2. Titania rutile phase formation in ternary system (Ti–La–V) was inhibited by La3+ and promoted by V4+ co-doped TiO2 in high concentration of vanadium and 22.6 mol% anatase composition is retained at 15% vanadium. The photocatalyst activity was evaluated by photocatalytic degradation kinetics of aqueous methylen orange under visible radiation. The results show that the photocatalytic activity of the 10 mol% V and 5 mol% La co-doped TiO2 nanopowders has a larger degradation efficiency than pure TiO2 under visible light.

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Authors and Affiliations

  1. Faculty of Material Engineering, Sahand University of Technology, Tabriz, Iran

    Nasrollah Najibi Ilkhechi

  2. Department of Physics, Faculty of Science, Malayer University, Malayer, Iran

    Nader Ghobadi

  3. Department of Materials Engineering, Faculty of Engineering, University of Maragheh, Maragheh, Iran

    Mohammad Reza Akbarpour

Authors
  1. Nasrollah Najibi Ilkhechi
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  2. Nader Ghobadi
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  3. Mohammad Reza Akbarpour
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Correspondence to Nasrollah Najibi Ilkhechi.

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Ilkhechi, N.N., Ghobadi, N. & Akbarpour, M.R. Enhanced optical and photo catalytic properties of V and La co doped TiO2 nanoparticles. J Mater Sci: Mater Electron 28, 6426–6434 (2017). https://doi.org/10.1007/s10854-016-6328-x

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  • DOI: https://doi.org/10.1007/s10854-016-6328-x

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