Microemulsion synthesis of Ga and Sr doped BiFeO3 nanoparticles and evaluation of their ferroelectric, optical, dielectric and photocatalytic properties

Nazeer, Zarish; Bibi, Ismat; Majid, Farzana; Kamal, Shagufta; Ghafoor, Aamir; Ali, Adnan; Kausar, Abida; Elqahtani, Zainab Mufarreh; Alwadai, Norah; Iqbal, Munawar

doi:10.1016/j.physb.2023.414788

Cited by 11 publications

(16 citation statements)

References 41 publications

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“…for doping Mn and Zn on NiO nanoparticles, respectively. Also, doping of other metals like Co, Fe doped NiO particles by wet method reported the decrease in bandgap values [26] . This reduced bandgap was an actual cause of high efficiency of the prepared samples and hence, proved them an active photocatalysts for dye degradation.…”

Section: Resultsmentioning

confidence: 87%

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Zn/Mn co‐doped NiO synthesized by sol‐gel route for the photocatalytic degradation of methylene blue dye

Ata,

Zaheer,

Tabassum

et al. 2023

ChemistrySelect

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This work emphasis on the synthesis of Ni0.2Mn0.02Zn0.02O nanoparticles by facile sol‐gel method. The photocatalytic activity was studied for the degradation of methylene blue (MB) dye under the UV light as a function of dye initial concentration, catalyst dose and pH of the medium. Scanning electron microscopy (SEM) and energy dispersive X‐ray (EDX) were utilized for the study of morphological and elemental composition, while XRD analysis was employed for structural study of the prepared material, which formation the phase purity and size was in 20–24 nm range. The bandgap of Zn/Mn co‐doped NiO NPs (3.24 eV) was reduced as compared to pure NiO NPs (3.43 eV). The degradation efficiency of pure NiO NPs and Zn/Mn co‐doped NiO NPs was found to be 70 % (60 min) and 94 % at optimum conditions. The dielectric properties were also studied, which were also improved in response of doping. The findings revealed that the optical and catalytic properties of Zn/Mn co‐doped NiO NPs were improved versus pure NiO NPs, which could be employed for the remediation of dyes in effluents.

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Section: Resultsmentioning

confidence: 87%

“…The peaks present in the range of 530–860 cm −1 were due to the lattice enlargement and defects in the crystal which occurred due to the presence of Zn and Mn metal ions in the lattice. Peak at 430 cm −1 corresponds to the Ni−O stretching vibration [26,31–33] …”

Section: Resultsmentioning

confidence: 99%

Zn/Mn co‐doped NiO synthesized by sol‐gel route for the photocatalytic degradation of methylene blue dye

Ata,

Zaheer,

Tabassum

et al. 2023

ChemistrySelect

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“…Several scavengers were used in principal component analysis to measure the function of hydroxyl radicals, holes, and electrons. 26 Using the above-mentioned ideal setting, isopropyl alcohol (IPA) as well as ethylenediaminetetraacetic acid (EDTA) were utilized to examine the function of hydroxyl radicals and electrons on all synthesized Hap. If not mentioned otherwise, 10 mL of the scavenger was chosen in 40 mL of 20 ppm Congo red dye for 90 min using 0.1 g of catalyst.…”

Section: Methodsmentioning

confidence: 99%

Synthesis of different types of nano-hydroxyapatites for efficient photocatalytic degradation of textile dye (Congo red): a crystallographic characterization

Kawsar,

Sahadat Hossain,

Tabassum

et al. 2024

RSC Adv.

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“…Compared to rare earth elements, alkaline earth metal dopants present a favorable doping option for CoCr 2 O 4 due to the absence of the d/f shell electronic structure, potentially reducing the threshold energy of absorption. , Recently, Sr 2+ with large ionic size has emerged as a promising element for enhancing the photocatalytic performance of various catalysts, such as Sr-doped BiFeO 3 and CoFe 2 O 4 . − Sr 2+ ions can increase the charge carriers and red-shift the band gap of the crystal lattice, thereby influencing electronic properties.…”

Section: Introductionmentioning

confidence: 99%

Spinel Phase Engineering Boosted Visible-Light Photocatalytic Activity in Co_1–xSr_xCr₂O₄

Chen,

Gao,

Zhang

2024

Langmuir

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We synthesized Sr-doped spinel CoCr 2 O 4 using the solution combustion method and characterized the structure, morphology, chemical state, and photocatalytic properties through different techniques such as X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), and electrochemical impedance spectroscopy (EIS). 30−50 nm cuboid CoCr 2 O 4 nanocrystals with Sr doping levels ranging from 0 to 0.6% were obtained; the increasing Sr doping deformed the coordination number of Co and Cr, transitioning to octahedral and tetrahedral units, inducing the phase transition from spinel to inverse spinel at 0.6% Sr content. This modification enhanced optical absorption, reduced the energy band gap, increased photoluminescence intensity, and maintained a high-spin state with oxygen vacancies. 0.6% Sr-doped CoCr 2 O 4 demonstrated the highest photocatalytic efficiency at 93%. The XRD structure and photocatalytic activity remained at 87% over 7 cycles after 14 h. Employing degradation pathways and Mott−Schottky curves elucidated the enhancement mechanism.

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Microemulsion synthesis of Ga and Sr doped BiFeO3 nanoparticles and evaluation of their ferroelectric, optical, dielectric and photocatalytic properties

Cited by 11 publications

References 41 publications

Zn/Mn co‐doped NiO synthesized by sol‐gel route for the photocatalytic degradation of methylene blue dye

Zn/Mn co‐doped NiO synthesized by sol‐gel route for the photocatalytic degradation of methylene blue dye

Synthesis of different types of nano-hydroxyapatites for efficient photocatalytic degradation of textile dye (Congo red): a crystallographic characterization

Spinel Phase Engineering Boosted Visible-Light Photocatalytic Activity in Co_1–xSr_xCr₂O₄

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Microemulsion synthesis of Ga and Sr doped BiFeO3 nanoparticles and evaluation of their ferroelectric, optical, dielectric and photocatalytic properties

Cited by 11 publications

References 41 publications

Zn/Mn co‐doped NiO synthesized by sol‐gel route for the photocatalytic degradation of methylene blue dye

Zn/Mn co‐doped NiO synthesized by sol‐gel route for the photocatalytic degradation of methylene blue dye

Synthesis of different types of nano-hydroxyapatites for efficient photocatalytic degradation of textile dye (Congo red): a crystallographic characterization

Spinel Phase Engineering Boosted Visible-Light Photocatalytic Activity in Co1–xSrxCr2O4

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Spinel Phase Engineering Boosted Visible-Light Photocatalytic Activity in Co_1–xSr_xCr₂O₄