Synthesis of CoTiO3 nanoparticles with enhanced photocatalytic degradation

Synthesis of CoTiO3 nanoparticles with enhanced photocatalytic degradation

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The mesoporous CoTiO3 nanoparticles, which have been successfully prepared by a fast, simple and low-cost hydrothermal method, show good decolourisation and degradation of methylene blue (MB). The synthesised samples can be recovered easily from solution by a magnetic mass. Surface morphology, structure, composition, and optical characteristics of the prepared CoTiO3 were determined using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and ultraviolet–visible absorption measurements. The degradation percentage of MB was nearly 95% at an initial concentration of 10 ppm in 90 min. Such enhanced photocatalytic activities of synthesised CoTiO3 were attributed to a large specific surface area (54.22 m2 g−1) and defects density, which was useful for restraining surface recombination of photo-generated charge carriers. The recovery of CoTiO3 nanoparticles was about 85% and the degradation rate of MB remained 80% after five cycles. As a whole, the CoTiO3 nanocomposites give a synergistic effect in photocatalytic and magnetic behaviour and indicate that the synthesised samples have a promising potential particularly for water purification and environmental remediation.

Inspec keywords: nanocomposites; nanoparticles; nanofabrication; surface morphology; photochemistry; catalysis; transmission electron microscopy; titanium compounds; surface recombination; scanning electron microscopy; ultraviolet spectra; Fourier transform infrared spectra; X-ray photoelectron spectra; X-ray diffraction; visible spectra

Other keywords: time 90.0 min; magnetic mass; X-ray photoelectron spectroscopy; environmental remediation; photo-generated charge carriers; specific surface area; optical characteristics; degradation rate; methylene blue degradation; CoTiO3; enhanced photocatalytic degradation; surface morphology; nanocomposites; magnetic behaviour; degradation percentage; enhanced photocatalytic activities; scanning electron microscopy; photocatalytic behaviour; transmission electron microscopy; Fourier transform infrared spectroscopy; ultraviolet–visible absorption measurements; mesoporous cobalt titanium oxide nanoparticles; methylene blue decolourisation; surface recombination; X-ray diffraction; water purification; simple cost hydrothermal method; MB

Subjects: Electron spectroscopy for chemical analysis (photoelectron, Auger spectroscopy, etc.); Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Photoelectron spectra of composite surfaces; Heterogeneous catalysis at surfaces and other surface reactions; Infrared and Raman spectra in inorganic crystals; Photolysis and photodissociation by IR, UV and visible radiation; Solid surface structure


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