A comparative study of structural, thermal, and optoelectronic properties between zircon and scheelite type structures in SrMoO4 compound: An ab-initio study

Benzineb, M.; Chiker, F.; Khachai, H.; Meradji, H.; Uğur, Ş.; Naqib, S. H.; Omran, S. Bin; Wang, Xiaotian; Khenata, R.

doi:10.1016/j.ijleo.2021.166714

Cited by 5 publications

(1 citation statement)

References 37 publications

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“…Dos Santos et al [56] and Zhang et al [51] synthesized SrMoO 4 microcrystal by the sonochemical method with E gap of 4.05 eV and 3.72 eV, respectively, but, to date, no E gap values associated with SrWO 4 crystals synthesized by the sonochemical method on the micro scale have been reported. Theoretical studies estimate E gap values for SrMoO 4 crystals between 3.69 and 5.35 eV [5,[77][78][79] and for SrWO 4 between 4.41 and 5.37 eV [80][81][82][83]. Therefore, the data discussed so far suggest that the E gap values estimated in this work are within the range of expected values.…”

Section: Sonophotocatalytic Activities Measurementssupporting

confidence: 72%

Structural investigation and sonophotocatalytic properties of the solid solutions Sr(Mo1−xWx)O4 crystals synthesized by the sonochemical method

Sousa

Nogueira

Gusmão

et al. 2022

J Mater Sci: Mater Electron

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In this paper, the solid solutions of strontium molybdate-tungstate [Sr(Mo 1-x-W x )O 4 ] crystals with (x = 0, 0.25, 0.50, 0.75, and 1) were synthesized by the sonochemical method. Their structure, morphology, optical, and sonophotocatalytic properties were performed in function of the replacement of Mo 6? by W 6? cations into the lattice. Their structure and elemental composition were characterized using X-ray diffraction, Rietveld refinement, micro-Raman, energy-dispersive X-ray, and Fourier-transform infrared spectroscopies proving that all samples are monophasic, crystalline, and exhibit a scheelite-type tetragonal structure. Field-emission scanning electron microscopy images revealed the octahedral and dumbbell-like morphologies for SrMoO 4 and SrWO 4 crystals. Moreover, it is noted to pass through spindle-like morphology for the microcrystals containing both Mo 6? and W 6? cations (x = 0.25, 0.50, and 0.75). Ultraviolet-visible diffuse reflectance spectroscopy showed a directly proportional increase in the optical band gap (E gap ) values from 4.27 to 5.01 eV. These data indicate an increase in the intermediary electronic levels between valance and conduction bands with the increase in the concentration of W 6? cations in the lattice. Finally, we have obtained good sonophotocatalytic performances for SrMoO 4 crystals (90%), and mainly to Sr(Mo 0.25 W 0.75 )O 4 crystals (98%) in the degradation of Rhodamine B dye until 240 min under UV-C light.

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