Structural, magnetic and dielectric characteristics of optically tuned Fe doped ZrO2 nanoparticles with visible light driven photocatalytic activity

Ahmed, Waheed; Iqbal, Javed; Aisida, Samson O.; Badshah, Amin; Ahmad, Ishaq; Alamgir, Khalid; Gul, Iftikhar Hussain

doi:10.1016/j.matchemphys.2020.122999

Cited by 40 publications

(5 citation statements)

References 41 publications

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“…Similar results showed that the tetragonal phase stabilization of Fe doped ZrO 2 nanoparticles at different incorporation ratios between 3% and 10% an annealing temperature of 500 °C was reported in Ref. [43]. Also, the co-doping of Co and Fe ions developed a tetragonal-phase stabilization only up to 600 °C [44].…”

Section: Stabilization Of Tetragonal Zirconiasupporting

confidence: 87%

“…Also, the co-doping of Co and Fe ions developed a tetragonal-phase stabilization only up to 600 °C [44]. Another trail of stabilization with doping is reported to a relatively high temperature up to 875 °C by Garcia et al [43], but the hematite phase made a significant appearance in the diffraction pattern. When compared to the finding in this work, the stabilization of t-ZrO 2 nanoparticles is found at similar temperatures starting from 500 °C and lasting to higher temperatures up to 900 °C for 16 mol% incorporation ratio.…”

Section: Stabilization Of Tetragonal Zirconiamentioning

confidence: 85%

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Stabilization of tetragonal phase of nanostructured Fe_x/ZrO₂ system (0 ≤ x ≤ 25) prepared by modified sol-gel method

El-fadl¹,

Eltokhey²,

Abu-Sehly³

et al. 2022

Phys. Scr.

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In the present study, Fex/ZrO2 (0 ≤ x ≤ 25) nanoparticles were synthesized by a facile modified Sol-Gel method. Stabilization of the tetragonal phase of ZrO2 is studied as a function of both the Fe incorporation ratios and thermal treatment. The Fe incorporation ratios are tested up to the extreme just before FeO and Fe2O3 phases are formed separately. The prepared Fex/ZrO2 nanoparticles XRD analysis depicts the formation of zirconium oxide at different Fe ratios in the nanoscale with an excellent degree of crystallinity in the tetragonal phase. The effect of thermal treatment on stabilizing the tetragonal phase of Fex/ZrO2 nanoparticles is extensively studied. The phase transition to the monoclinic phase is determined as function of Fe incorporation ratios and annealing temperatures. The optical absorbance spectra showed that the optical band gap decreased with increasing Fe ratios without the formation of doping bands which confirms the formation of Fex/ZrO2 single matrix.

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Section: Stabilization Of Tetragonal Zirconiasupporting

confidence: 87%

Section: Stabilization Of Tetragonal Zirconiamentioning

confidence: 85%

Stabilization of tetragonal phase of nanostructured Fe_x/ZrO₂ system (0 ≤ x ≤ 25) prepared by modified sol-gel method

El-fadl¹,

Eltokhey²,

Abu-Sehly³

et al. 2022

Phys. Scr.

View full text Add to dashboard Cite

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“…73 The heightened dielectric constant in SCBP was ascribed to the establishment of an optimal layer thickness within the space charge layer. 74 This layer functioned akin to a capacitor, and its precise dimensionality played a crucial role. Fine-tuning this space charge layer significantly reduced the recombination of charge carriers, creating a conducive environment for enhanced piezo-response behaviour.…”

Section: Resultsmentioning

confidence: 99%

Sonochemically synthesized black phosphorus nanoparticles: a promising candidate for piezocatalytic antibacterial activity with enhanced dielectric properties

Halder,

Mondal,

Bag

et al. 2024

Dalton Trans.

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“…The Rh doping exhibits a lower overpotential, but its shortage limits industrial application. In contrast, Fe, a cost-effective and readily available metal, has not only been successfully doped into ZrO 2 in experiments [56][57][58] but also regraded as an ideal dopant for enhancing OER activity [59,60]. Therefore, Fe holds great promise as a modulating agent for industrial-scale OER application.…”

Section: Interatomic Bond Strength Analysismentioning

confidence: 99%

Rational Design of Cost-Effective Metal-Doped ZrO2 for Oxygen Evolution Reaction

Zhang,

Wang,

Mei

et al. 2024

Nano-Micro Lett.

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The design of cost-effective electrocatalysts is an open challenging for oxygen evolution reaction (OER) due to the “stable-or-active” dilemma. Zirconium dioxide (ZrO2), a versatile and low-cost material that can be stable under OER operating conditions, exhibits inherently poor OER activity from experimental observations. Herein, we doped a series of metal elements to regulate the ZrO2 catalytic activity in OER via spin-polarized density functional theory calculations with van der Waals interactions. Microkinetic modeling as a function of the OER activity descriptor (GO*-GHO*) displays that 16 metal dopants enable to enhance OER activities over a thermodynamically stable ZrO2 surface, among which Fe and Rh (in the form of single-atom dopant) reach the volcano peak (i.e. the optimal activity of OER under the potential of interest), indicating excellent OER performance. Free energy diagram calculations, density of states, and ab initio molecular dynamics simulations further showed that Fe and Rh are the effective dopants for ZrO2, leading to low OER overpotential, high conductivity, and good stability. Considering cost-effectiveness, single-atom Fe doped ZrO2 emerged as the most promising catalyst for OER. This finding offers a valuable perspective and reference for experimental researchers to design cost-effective catalysts for the industrial-scale OER production.

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Structural, magnetic and dielectric characteristics of optically tuned Fe doped ZrO2 nanoparticles with visible light driven photocatalytic activity

Cited by 40 publications

References 41 publications

Stabilization of tetragonal phase of nanostructured Fe_x/ZrO₂ system (0 ≤ x ≤ 25) prepared by modified sol-gel method

Stabilization of tetragonal phase of nanostructured Fe_x/ZrO₂ system (0 ≤ x ≤ 25) prepared by modified sol-gel method

Sonochemically synthesized black phosphorus nanoparticles: a promising candidate for piezocatalytic antibacterial activity with enhanced dielectric properties

Rational Design of Cost-Effective Metal-Doped ZrO2 for Oxygen Evolution Reaction

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Structural, magnetic and dielectric characteristics of optically tuned Fe doped ZrO2 nanoparticles with visible light driven photocatalytic activity

Cited by 40 publications

References 41 publications

Stabilization of tetragonal phase of nanostructured Fex/ZrO2 system (0 ≤ x ≤ 25) prepared by modified sol-gel method

Stabilization of tetragonal phase of nanostructured Fex/ZrO2 system (0 ≤ x ≤ 25) prepared by modified sol-gel method

Sonochemically synthesized black phosphorus nanoparticles: a promising candidate for piezocatalytic antibacterial activity with enhanced dielectric properties

Rational Design of Cost-Effective Metal-Doped ZrO2 for Oxygen Evolution Reaction

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Product

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Stabilization of tetragonal phase of nanostructured Fe_x/ZrO₂ system (0 ≤ x ≤ 25) prepared by modified sol-gel method

Stabilization of tetragonal phase of nanostructured Fe_x/ZrO₂ system (0 ≤ x ≤ 25) prepared by modified sol-gel method