Research on Chemical Intermediates

, Volume 36, Issue 1, pp 103–113 | Cite as

Synthesis of TiO2 using different hydrolysis catalysts and doped with Zn for efficient degradation of aqueous phase pollutants under UV light

  • O. Vázquez-Cuchillo
  • A. Cruz-López
  • L. M. Bautista-Carrillo
  • A. Bautista-Hernández
  • L. M. Torres Martínez
  • S. Wohn Lee


In this work, various TiO2 and TiO2 doped with 0.1, 1.0, and 5.0 mol% of Zn were prepared by the sol–gel method varying different hydrolysis catalysts (HNO3, OHAc, H3PO4) in order to be used as photocatalysts for environmental applications. The X-ray diffraction results showed that the different TiO2 samples have presented the anatase as main phase, However, the acid nature has played an important role in the superficial and optical properties. The N-physisortion analysis has revealed that the specific surface area of calcined TiO2 samples prepared using H3PO4, HOAc, and HNO3 was 245, 100, and 90 m2 g−1, respectively, while the spectroscopic UV analysis, the band gap energy has shifted by 3.3–3.0 eV. In order to improve the optical properties of TiO2, the last preparation was doped with different zinc concentrations. The result showed that, as the Zn concentration increase by 0.1–5.0 mol%, the surface area increased from 90 to 120 m2 g−1. Nevertheless, the E g returned from 3.0 to 3.32. The SEM analyses have not revealed important morphological changes between no doped and doped materials. The catalytic activity of the composite was studied on the photocatalytic degradation of 2,4-Dichlorophenoxyacetic acid (2,4-D) and the activity results showed that small Zn concentrations decrease the t 1/2 in 28 min.


TiO2 2,4-Dichlorophenoxyacetic acid Sol–gel method 



This work was financially supported by PROMEP-SEP (103.5/08/3125 and 103.5/08/5466), CONACYT (089620, 081437) and Fundación UANL.


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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • O. Vázquez-Cuchillo
    • 1
  • A. Cruz-López
    • 1
  • L. M. Bautista-Carrillo
    • 1
  • A. Bautista-Hernández
    • 2
  • L. M. Torres Martínez
    • 1
  • S. Wohn Lee
    • 3
  1. 1.Departmento de Ecomateriales y Energía, Facultad de Ingeniería CivilUniversidad Autónoma de Nuevo LeónSan Nicolás de los GarzaMéxico
  2. 2.Facultad de IngenieríaUniversidad Autónoma de PueblaPueblaMéxico
  3. 3.Department of Materials EngineeringSun Moon UniversityAsanSouth Korea

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