Spin-phonon coupling in uniaxial anisotropic spin-glass based on Fe2TiO5 pseudobrookite

Rodrigues, João Elias Figueiredo Soares; Rosa, Washington Santa; Ferrer, Mateus M.; Cunha, T.R.; Zapata, Maximiliano J. M.; Martínez, José Luis; Pizani, P. S.; Alonso, J. A.; Hernandes, Antônio Carlos; Gonçalves, Renato V.

doi:10.1016/j.jallcom.2019.05.343

Cited by 25 publications

(18 citation statements)

References 61 publications

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“…Refinement of ion occupancy showed that differing from the previously obtained fully disordered structure [ 19 ] iron ions showed a slight preference for 4c sites occupying 72%, while 64% iron ions are on 8f sites. Such an iron preference was previously noted by Guo et al [ 22 ] of 72% and Rodrigues et al [ 23 ] of 75%. The crystal structure drawn using these parameters and the VESTA software package [ 17 ] is shown as an inset in figure 1 b composed of randomly distributed TiO 6 and FeO 6 octahedra.…”

Section: Resultssupporting

confidence: 76%

“…7: 200708 72%, while 64% iron ions are on 8f sites. Such an iron preference was previously noted by Guo et al [22] of 72% and Rodrigues et al [23] of 75%. The crystal structure drawn using these parameters and the VESTA software package [17] is shown as an inset in figure 1b composed of randomly distributed TiO 6 and FeO 6 octahedra.…”

Section: Iron Titanate Structuresupporting

confidence: 74%

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Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method

et al. 2020

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The aim of this work was to synthesize semiconducting oxide nanoparticles using a simple method with low production cost to be applied in natural sunlight for photocatalytic degradation of pollutants in waste water. Iron titanate (Fe 2 TiO 5 ) nanoparticles with an orthorhombic structure were successfully synthesized using a modified sol–gel method and calcination at 750°C. The as-prepared Fe 2 TiO 5 nanoparticles exhibited a moderate specific surface area. The mesoporous Fe 2 TiO 5 nanoparticles possessed strong absorption in the visible-light region and the band gap was estimated to be around 2.16 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under natural sunlight. The effect of parameters such as the amount of catalyst, initial concentration of the dye and pH of the dye solution on the removal efficiency of methylene blue was investigated. Fe 2 TiO 5 showed high degradation efficiency in a strong alkaline medium that can be the result of the facilitated formation of OH radicals due to an increased concentration of hydroxyl ions.

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Section: Resultssupporting

confidence: 76%

Section: Iron Titanate Structuresupporting

confidence: 74%

Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method

et al. 2020

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“…10,19 Renement of ion occupancy showed that in Fe 2 TiO 5 nanobers the preference of iron ions for 4c sites was 80%, while 60% iron ions are on 8f sites. This is higher than the value of 75% noted by Rodriguez et al, 57 and 72% for Fe 2 TiO 5 obtained using a modied sol-gel method 19 or the fully disordered structure for Fe 2 TiO 5 obtained by solid-state synthesis. 10 In FT-IR spectra of calcined NFs (Fig.…”

Section: Resultscontrasting

confidence: 63%

Exploring the impact of calcination parameters on the crystal structure, morphology, and optical properties of electrospun Fe₂TiO₅ nanofibers

et al. 2021

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“…For the pristine Fe 2 TiO 5 , the Ti 2p 1/2 and Ti 2p 3/2 peaks are centered at 463.8 and 458.0 eV and the Fe 2p 1/2 and Fe 2p 3/2 peaks centered at 724.4 and 710.8 eV. The binding energy is slightly lower compared with those of other reports on monophasic pseudobrookite Fe 2 TiO 5 . , This phenomenon can be attributed to oxygen deficiency, which leads to the existence of Ti 3+ and Fe 2+ on the surface of Fe 2 TiO 5 . Moreover, after surface Al 3+ treatment the Ti 2p and Fe 2p peaks shifted to higher binding energies.…”

Section: Resultsmentioning

confidence: 70%

Enhancement of Fe₂TiO₅ Photoanode through Surface Al³⁺ Treatment and FeOOH Modification

Kuang

Wang

Geng

et al. 2019

ACS Sustainable Chem. Eng.

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Fe2TiO5 is recognized as a novel and promising photoanode material for solar water splitting. Here, nanostructured Fe2TiO5 was fabricated on a fluorine-doped tin oxide substrate by an electrospray deposition technique. We utilized surface Al3+ treatment and FeOOH modification to improve performance of the Fe2TiO5 photoanode. After this two-step enhancement, the photocurrent density of the final Fe2TiO5 photoanode is 0.52 mA cm–2 at 1.23 VRHE which is 2.8 times that of the pristine one, and the onset potential is 200 mV lower than before. The enhanced performance can be attributed to a synergetic effect of surface Al3+ treatment and FeOOH modification, since the surface Al3+ treatment accelerates charge transport while the FeOOH layer improves catalytic activity. This strategy of surface modification provides an effective pathway for rational designing of original photoanodes with high practical performance.

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Spin-phonon coupling in uniaxial anisotropic spin-glass based on Fe2TiO5 pseudobrookite

Cited by 25 publications

References 61 publications

Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method

Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method

Exploring the impact of calcination parameters on the crystal structure, morphology, and optical properties of electrospun Fe₂TiO₅ nanofibers

Enhancement of Fe₂TiO₅ Photoanode through Surface Al³⁺ Treatment and FeOOH Modification

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Spin-phonon coupling in uniaxial anisotropic spin-glass based on Fe2TiO5 pseudobrookite

Cited by 25 publications

References 61 publications

Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method

Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method

Exploring the impact of calcination parameters on the crystal structure, morphology, and optical properties of electrospun Fe2TiO5 nanofibers

Enhancement of Fe2TiO5 Photoanode through Surface Al3+ Treatment and FeOOH Modification

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Product

Resources

About

Exploring the impact of calcination parameters on the crystal structure, morphology, and optical properties of electrospun Fe₂TiO₅ nanofibers

Enhancement of Fe₂TiO₅ Photoanode through Surface Al³⁺ Treatment and FeOOH Modification