Journal
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
Volume 147, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2022.106699
Keywords
Electrospinning; Visible light TiO 2-MoO 3 nanofibers; Photocatalysis
Categories
Funding
- NRDI [K 124212, TNN_16 123631]
- European Union [VEKOP-2.3.2-16-2017-00013]
- State of Hungary
- Stipendium Hungaricum scholarship
- National Research, Development and Innovation Fund of Hungary [TKP2021-NKTA-34]
- European Regional Development Fund
- NRDI Office under the auspices of the Ministry for Innovation and Technology
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This study demonstrates the synthesis and characterization of TiO2-MoO3 composite nanofibers via electrospinning. The TiO2-MoO3 fibers showed the best photocatalytic activity in visible light.
Coupling TiO2 nanofibers with other semiconductor metal oxides can effectively extend the light absorbability of TiO2 to the visible range of the electromagnetic spectrum. This study demonstrates the synthesis of TiO2-MoO3 composite nanofibers via electrospinning using Ti and Mo water-soluble precursors. Aqueous solutions of these precursors were added to a PVP solution in N-N dimethylformamide. The mixture was electrospun, followed by annealing in air at 600 degrees C obtaining oxide nanofibers. The fibers were characterized via thermogravimetry and differential thermal analysis, X-ray photoelectron spectroscopy, scanning electron microscopy and energydispersive X-ray spectroscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, Xray diffraction, and Raman spectroscopy. The diameter of the TiO2-MoO3 fibers was between 90 and 110 nm after annealing, Furthermore, methylene blue dye was used to investigate the photocatalytic activity of the fibers in visible light. TiO2-MoO3 fibers showed the best photocalaytic activity with a rate constant of 0.0018 min-1 while pure TiO2 and MoO3 nanofibers had 0.0009 min-1 and 0.0008 min-1 respectively.
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