Journal of Electronic Materials

, Volume 48, Issue 5, pp 3131–3136 | Cite as

Photocatalytic Activity of BiTaO4 Nanoparticles for the Degradation of Methyl Orange Under Visible Light

  • Quang Bac Nguyen
  • Dinh Phuong Vu
  • Thi Ha Chi Nguyen
  • Trung Dung Doan
  • Ngoc Chuc Pham
  • Thi Lim Duong
  • Dai Lam Tran
  • Giang Long Bach
  • Hong Con Tran
  • Ngoc Nhiem DaoEmail author


BiTaO4 nanoparticles were successfully synthesized by the gel-combustion method using polyvinyl alcohol and freshly prepared precursor Ta2O5.nH2O. Materials were characterized by x-ray diffraction and transmission electron microscopy (TEM). With an average grain size of 30 nm, the prepared particle was used to investigate the photocatalytic capacity under the visible light irradiation. The photodegradation process of methyl orange occurred following the pseudo-first order reaction mechanism on the surface of the materials. BiTaO4 nanoparticles which calcined at 750°C presented the best catalytic capacity with the highest rate constant to degrade methyl orange about 5.43 × 10−2 mg l−1 min−1. Besides, the intermediates coming from the photocatalytic degradation of methyl orange were evaluated by liquid chromatography coupled with electrospray ionization ion-trap mass spectrometry (LC/MS). The results showed that the intermediates of degradation reactions of methyl orange were not more toxic than the initial methyl orange. BiTaO4 nanoparticles can mineralize the methyl orange after 60 min of illumination.


Methyl orange photodegradation BiTaO4 LC/MS nanoparticles 


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Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Quang Bac Nguyen
    • 1
  • Dinh Phuong Vu
    • 2
  • Thi Ha Chi Nguyen
    • 1
    • 3
  • Trung Dung Doan
    • 1
  • Ngoc Chuc Pham
    • 1
  • Thi Lim Duong
    • 4
  • Dai Lam Tran
    • 3
    • 5
  • Giang Long Bach
    • 6
  • Hong Con Tran
    • 2
  • Ngoc Nhiem Dao
    • 1
    • 3
    Email author
  1. 1.Institute of Materials ScienceVietnam Academy of Science and TechnologyHanoiVietnam
  2. 2.Faculty of ChemistryVNU Hanoi University of ScienceHanoiVietnam
  3. 3.Graduate University of Science and TechnologyVietnam Academy of Science and TechnologyHanoiVietnam
  4. 4.Institute of GeographyVietnam Academy of Science and TechnologyHanoiVietnam
  5. 5.Institute for Tropical TechnologyVietnam Academy of Science and TechnologyHanoiVietnam
  6. 6.Institute of High TechnologyNguyen Tat Thanh UniversityHo Chi MinhVietnam

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