One-Step Hydrothermal Synthesis of α- MoO3 Nano-belts with Ultrasonic Assist for incorporating TiO2 as a NanoComposite | ||||
| Egyptian Journal of Chemistry | ||||
| Article 32, Volume 64, Issue 10, October 2021, Page 5725-5734 PDF (1.08 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2021.72582.3615 | ||||
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| Authors | ||||
Amani Obaid; Luma Ahmed  
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| Department of Chemistry, College of Science, University of Kerbala, Kerbala- 56001, Iraq. | ||||
| Abstract | ||||
| One of the goals of this project was to utilize the hydrothermal method in preparation of α- MoO3 nano-belts as bluish power at 180oC for 5h. This nanomaterial was incorporated with rutile-TiO2 to produce a nanocomposite photocatalyst by a direct ultrasonic method in a ratio of 0.25(α-MoO3): 9.75(TiO2) as w/w ratio. The characterized of samples found by X-ray diffraction(XRD), scan electron microscopy(SEM), and ultraviolet-visible spectrophotometry. The XRD analysis and SEM image for prepared α-MoO3 are proved the α-MoO3 is prepared as a nano-belts, but its composite is being as spherical with elevated if roughness of its surface after incorporation. The bandgap of α-MoO3 nanobelts increased from 2.8 eV to 2.95 eV after fabrication it surfaces with rutile-TiO2 that attitude to the small Mo6+ ion incorporated with Ti4+ of TiO2 matrix and both ions have a coordination number equal to 6 that enhanced this incorporation. XRD data indicated to all samples are having a nanosize, but SEM analysis proved all samples are polycrystals. The photocatalytic efficiency and the quantum yield for Chlorazol black BH dye decolorization using α-MoO3 nano-belts investigated under UV-A light and observed it elevated with using its nanocomposite. That due to elevating the acidity of α-MoO3 nano-belts surface after incorporating it in a rutile-TiO2 crystal lattice, which decreases the recombination and increases the generalization of hydroxyl radical. The photoreaction for using α-MoO3 nano-belts and its composite obeyed pseudo-first-order kinetics. | ||||
| Keywords | ||||
| Nano-belts; nanocomposite; hydrothermal method; α-MoO3; TiO2 and direct Blue 2 | ||||
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