Effect of embedding aluminium and yttrium on the magneto-optic properties of lanthanum spinel ferrite nanoparticles synthesised for photocatalytic degradation of methyl red

Kazi, Subiya K.; Tigote, Radhakrishnan M.; Gaikwad, Vandana A.; Kamble, Dhanraj; Bhale, Pravin S.; Shringare, Sadanand N.; Musrif, Pramod G.; Inamdar, Shaukatali N.

doi:10.1007/s10971-022-05951-5

Cited by 5 publications

(2 citation statements)

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“…When aluminum is doped into Cd1Al0.2Fe1.8O4, the band gap can be reduced from 2.8 to 2.6 eV, as illustrated in Fig 5 . This doping process with aluminum enhances photodegradation by creating new energy levels within the band gap, which results in increased absorption of visible light and the production of more electron-hole pairs. Moreover, aluminum atoms serve as electron traps, preventing recombination and prolonging the lifetimes of these charge carriers, thereby boosting photocatalytic activity [16,17].…”

Section: Photodegradation Mechanism Of Atrazinementioning

confidence: 99%

“…Moreover, metal doping with ions allows beneficial tuning of their electronic structure and separation of photogenerated charge carriers to further enhance photocatalytic performance [13][14][15]. Specifically, aluminum doping introduces additional occupied states below the conduction band minimum, which enables the absorption of lower energy visible photons [16,17]. Meanwhile, the altered band structure helps constrain electronhole recombination [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Aluminum-Doping Enhances the Photocatalytic Activity of CdFe2O4 Nanoparticles for Effective Removal of the Herbicide Atrazine

Yasar,

KHAN

2023

Preprint

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The successful synthesis of aluminum-doped cadmium ferrite Cd1AlxFe2 − XO4 (x = 0,0.2) via a facile sol-gel technique. Characterized by XRD, FTIR, SEM, EDX, DRS, Resistivity, and BET, these nanoparticles exhibit enhanced visible-light photocatalytic activity towards atrazine removal in water. A clear peak at (311) verified the presence of a single-phase FFC spinel ferrite structure, with Al doping influencing surface area (32.53 vs 14.43 m2/g for undoped), band gap (2.6 eV vs. 2.8 eV), and morphology. FTIR analysis reveals two main absorption peaks at 537 cm− 1 (ν1) and 453 cm− 1 (ν2), corresponding to the intrinsic stretching vibrations of tetrahedral and octahedral sites, respectively. Aluminum doping shifts these peaks 453 cm− 1 (ν2) TO 449 and 537 cm− 1 (ν1) TO 531 cm− 1, indicating changes in bond lengths and angles within the crystal structure. SEM reveals small, well-defined Al-doped particles and diminutive, smooth undoped counterparts. The existence of Cd, Fe, Al, and O elements is confirmed by EDX analysis. Hydroxyl radicals (OH•) are identified as the primary atrazine degradation species via scavenger analysis. Al doping significantly enhances atrazine removal (97% vs. 72.46% with undoped), attributed to the reduced band gap facilitating visible light absorption The first-order plot fits the data better than the second-order plot, as evidenced by the higher R2 value (0.995 vs. 0.840). Furthermore, the Al-doped nanoparticles demonstrate excellent stability over five reuse cycles, highlighting their potential for sustainable water purification. Their eco-friendly composition and cost-effective synthesis suggest promising applicability in environmental remediation technologies.

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Section: Photodegradation Mechanism Of Atrazinementioning

confidence: 99%