Fabrication of High Surface Area TiO2-MoO3 Nanocomposite as a Photocatalyst for Organic Pollutants Removal from Water Bodies

A nanocomposite (NC) of titanium (IV) oxide (TiO2) and molybdenum (VI) oxide (MoO3) was synthesized using a hydrothermal route. Detailed analyses using transmission electron microscopy, X-ray diffraction, X-ray fluorescence (XRF), Brunauer–Emmett–Teller (BET) isotherms, X-ray photoelectron spectrosc...

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Bibliographic Details
Published in:Catalysts 2023-02, Vol.13 (2), p.362
Main Authors: Abla, Fatima, Elsayed, Yehya, Abu Farha, Nedal, Obaideen, Khaled, Mohamed, Ahmed A., Lee, Haesung, Han, Changseok, Egilmez, Mehmet, Kanan, Sofian
Format: Article
Language:English
Subjects:
Adsorption
Carbamates (tradename)
carbaryl
Catalysts
Chemical reactions
Composite materials
Dyes
fenoxycarb
Fourier transforms
Infrared spectroscopy
Isotherms
Light sources
Metal oxides
methylene blue
Mixed oxides
Molybdenum trioxide
Morphology
Nanocomposites
Nanomaterials
Nitrogen
Pesticides
Photocatalysis
photocatalyst
Photodegradation
Photoelectrons
Sorption
Spectrum analysis
Surface area
Surface chemistry
Ti-Mo NC
Titanium
Titanium dioxide
Ultraviolet radiation
Water treatment
X ray photoelectron spectroscopy
X-ray fluorescence
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Summary:A nanocomposite (NC) of titanium (IV) oxide (TiO2) and molybdenum (VI) oxide (MoO3) was synthesized using a hydrothermal route. Detailed analyses using transmission electron microscopy, X-ray diffraction, X-ray fluorescence (XRF), Brunauer–Emmett–Teller (BET) isotherms, X-ray photoelectron spectroscopy, Raman, and diffuse reflectance infrared Fourier transform spectroscopy were carried out and confirmed the successful formation of pure TiO2-MoO3 (Ti-Mo) NC. The Ti-Mo NC possesses sizes in the range of 150–500 nm. XPS, Raman, and DRIFT shift measurements confirmed the formation of mixed oxide linkage in the form of Ti-O-Mo. Sorption of nitrogen isotherms revealed a significant increase in the number and pore widths of mesopores in the NC. Water sorption isotherms revealed enhanced affinity of the nanocomposites for water relative to the pure metal oxides. The BET surface area for Ti-Mo NC from the nitrogen adsorption isotherm was 129.3 m2/g which is much higher than the pure metal oxides (i.e., 37.56 m2/g for TiO2 and 2.21 m2/g for MoO3). The Ti-Mo NC provided suitable adsorption sites that captured the studied carbamates from the solution and promoted their photodegradation process. The photocatalytic degradation of MB in the presence of the catalyst was enhanced by 2.9 and 5.5 folds upon irradiation with white LED and 302 nm UV light sources, respectively.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal13020362