Magneto-functionalities of La1-xAxMnO3 (A = K; Ba) synthesized by flash combustion method

Bouzid, Sara Ait; Gâlcă, A.C.; Sajieddine, M.; Kuncser, V.; Rostas, Arpad Mihai; Iacob, Nicuşor; Enculescu, Monica; Amarande, L.; Pasuk, Iuliana; Essoumhi, A.

doi:10.1016/j.jallcom.2020.155546

Cited by 8 publications

(1 citation statement)

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“…Note that most of the brookite diffraction lines are overlapped by those of anatase, , and only the 211 reflection at 2θ = 30.8° emphasizes the presence of the brookite phase. The average crystallite sizes of the studied TiO 2 were inferred from the XRD patterns using Scherer’s formula. − The rutile 110, anatase 101, and the brookite 211 reflections were fitted using a Lorentz profile (see Figure S9 and Table T1), the fwhm used to calculate the coherence length along the corresponding crystallographic direction being the difference between the experimental fwhm and the instrument function …”

Section: Resultsmentioning

confidence: 99%

TiO₂ Phase Ratio’s Contribution to the Photocatalytic Activity

Stepanova,

Tite,

Ivanenko

et al. 2023

ACS Omega

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Photocatalysis is one of the approaches for solving environmental issues derived from extremely harmful pollution caused by industrial dyes, medicine, and heavy metals. Titanium dioxide is among the most promising photocatalytic semiconductors; thus, in this work, TiO 2 powders were prepared by a hydrothermal synthesis using titanium tetrachloride TiCl 4 as a Ti source. The effect of the hydrochloric acid (HCl) concentration on TiO 2 formation was analyzed, in which a thorough morphostructural analysis was performed employing different analysis methods like XRD, Raman spectroscopy, SEM/TEM, and N 2 physisorption. EPR spectroscopy was employed to characterize the paramagnetic defect centers and the photogeneration of reactive oxygen species. Photocatalytic properties were tested by photocatalytic degradation of the rhodamine B (RhB) dye under UV light irradiation and using a solar simulator. The pH value directly influenced the formation of the TiO 2 phases; for less acidic conditions, the anatase phase of TiO 2 crystallized, with a crystallite size of ≈9 nm. Promising results were observed for TiO 2 , which contained 76% rutile, showing a 96% degradation of RhB under the solar simulator and 91% under UV light after 90 min irradiation, and the best result showed that the sample with 67% of the anatase phase after 60 min irradiation under the solar simulator had a 99% degradation efficiency.

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