access icon free Effect of calcination temperature on the structure and photocatalytic performance of BiVO4 prepared via an improved solution combustion method

The bismuth vanadate (BiVO4) photocatalysts were synthesised via an improved solution combustion method. The effects of different calcine temperatures on microstructure and photocatalytic properties of BiVO4 were studied. The samples were characterised by X-ray diffraction, X-ray phototelectron spectroscopy, transmission electron microscope, ultraviolet–visible and photoluminescence analyses. Furthermore, the photocatalytic activity of the sample was evaluated by photocatalytic decomposition of rhodamine B (rhB). The results showed that all samples were monoclinic structures with high purity. Moreover, the calcination temperature had significant effects on both morphology and photocatalytic properties of BiVO4. The sample obtained at 500°C had the narrowest bandgap energy and presented the best photocatalytic activity for the rhB photodegradation rate reached up to 86.67% after 50 min under visible-light irradiation.

Inspec keywords: X-ray photoelectron spectra; catalysis; calcination; combustion synthesis; visible spectra; ultraviolet spectra; X-ray diffraction; photochemistry; transmission electron microscopy; photoluminescence; catalysts; energy gap; decomposition; bismuth compounds

Other keywords: photocatalytic decomposition; transmission electron microscopy; X-ray phototelectron spectroscopy; bandgap energy; X-ray diffraction; photodegradation rate; bismuth vanadate photocatalysts; BiVO4; rhodamine B; calcination; photocatalytic activity; temperature 500 degC; microstructure; structural properties; photoluminescence analysis; solution combustion method; ultraviolet-visible analysis; photocatalytic properties; visible-light irradiation; time 50 min; morphology

Subjects: Visible and ultraviolet spectra of other nonmetals; Electron spectroscopy for chemical analysis (photoelectron, Auger spectroscopy, etc.); Photolysis and photodissociation by IR, UV and visible radiation; Photoelectron spectra of semiconductors and insulators; Decomposition reactions (pyrolysis, dissociation, and group ejection); Photoluminescence in other inorganic materials; Heterogeneous catalysis at surfaces and other surface reactions; Other heat and thermomechanical treatments; Microstructure; Flames, combustion, and explosions

References

    1. 1)
    2. 2)
      • 9. Sha, M.G., Hou, X.H., Na, R.T.Y., et al: ‘Performance and combustion method preparation of nano-sized BiVO4’, China Non-Met., 2011, 6, pp. 4549.
    3. 3)
    4. 4)
      • 15. Din, Z., Qin, F., Zhao, H.P., et al: ‘Crystal defect engineering of aurivillius Bi2MoO6 by Ce doping for increased reactive species production in photocatalysis’, ACS Catal., 2017, 6, pp. 31803192.
    5. 5)
      • 12. Li, D.: ‘Study on preparation and photocatalytic properties of visible light response bismuth vanadate’ (Harbin University of Science and Technology, Harbin, 2015).
    6. 6)
    7. 7)
    8. 8)
      • 1. Shan, S., Yang, Z.X., Gao, P.Y., et al: ‘Preparation and photocatalytic property of Ni-MoS2/γ-Al2O3 catalyzer’, J. Synth. Cryst., 2016, 45, pp. 212217.
    9. 9)
      • 16. Tokunaga, S., Kato, H., Kudo, A., et al: ‘Selective preparation of monoclinic and tetragonal BiVO4 with scheelite structure and their photocatalytic properties’, Chem. Mater., 2002, 33, pp. 46244628.
    10. 10)
    11. 11)
    12. 12)
    13. 13)
    14. 14)
    15. 15)
    16. 16)
      • 2. Oka, N., Murata, A., Nakamura, S., et al: ‘Visible-light active thin-film WO3 photocatalyst with controlled high-rate deposition by low-damage reactive-gas-flow sputtering’, Appl. Mater., 2015, 3, pp. 202207.
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