Facile preparation of Ga-doped ZnO nanostructures by composite-hydroxide-mediated synthesis route for high-performance pseudocapacitors

Kamran, Muhammad Arshad; Ali, Wasif; Ullah, Sami; Alharbi, T.; Gul, Qeemat

doi:10.1016/j.est.2023.106871

Cited by 19 publications

(2 citation statements)

References 62 publications

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“…Various reports indicate that ZnO thin film can be synthesized using a variety of physical and chemical methods, including molecular beam epitaxy [8], RF-sputtering [9,10], chemical bath deposition [11], metalorganic chemical vapor deposition [12], Aerosol Assisted chemical vapour deposition [13], spray pyrolysis technique [14,15], pulsed laser deposition (PLD) [16] and sol-gel [17]. Among these techniques, spray pyrolysis is considered to be one of the most promising methods for preparing metal oxides due to its simplicity and costeffectiveness [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Effect of thickness on properties of La-doped Zinc Blende/Wurtzite ZnO thin films prepared by spray pyrolysis

Aboud,

Al-Harbi,

Mostafa Khlifa

et al. 2024

Phys. Scr.

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Thin films of ZnO doped with 3wt% Lanthanum were deposited on glass substrates using spray pyrolysis for varying thicknesses. The impact of thickness on the physical properties of the films was investigated using various techniques. XRD results revealed the formation of a mixture of two phases, cubic Zinc Blende (ZB) and hexagonal Wurtzite (WU), with their ratios changing based on film thickness. Crystallite size measurements indicated that the cubic phase granules remained stable at 14.6 nm up to a thickness of 719 nm, decreasing to 14 nm at 846 nm, while the crystallite size of the hexagonal phase increased to 18 nm at 846 nm. FE-SEM images showed changes in surface morphology with increasing thickness, and EDX analysis demonstrated a consistent La/Zn ratio across all film thicknesses. The refractive index exhibited a shift from normal to abnormal dispersion when the thickness exceeded 719 nm, and the high-frequency dielectric constant decreased from 3.2 to 2.91 as thickness increased. Additionally, optical band gaps ranged from a minimum of 3.19 eV at 719 nm thickness to a maximum of 3.23 eV at 846 nm thickness. The study examined the effectiveness of the deposited films in blocking UV light with a wavelength of 365 nm. It was discovered that the decay time significantly decreased to 143s at a thickness of 661 nm, compared to longer times observed at other thicknesses.

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Section: Introductionmentioning

confidence: 99%

Effect of thickness on properties of La-doped Zinc Blende/Wurtzite ZnO thin films prepared by spray pyrolysis

Aboud,

Al-Harbi,

Mostafa Khlifa

et al. 2024

Phys. Scr.

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“…[ 20 ] Kamran et al used a composite hydroxide‐mediated approach to create high‐performance Ga‐doped ZnO pseudocapacitors. [ 21 ] Mohammed et al synthesized Co‐doped ZnO nanoparticles via hydrothermal method for photodegradation of various organic pollutants in water. [ 22 ] Zaid et al explored bandgap variation through La and Ce codoping in ZnO and reported enhanced photodegradation of methylene blue.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Photocatalytic Degradation of Amaranth Dye in Water Environment using Visible Light‐Activated Fe‐Doped ZnO Nanoparticles

Warangule,

Balgude,

Nehare

et al. 2023

Physica Status Solidi (a)

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These days, the removal of dissolved organics from industrial waste water is a foremost challenge to scientific community to attain the conservation of the aqueous ecosystem. The present work emphasises on the photocatalytic degradation of industrial dye viz. amaranth using Fe doped ZnO (Fe‐ZnO) nanoparticles. The formation of Wurtzite phase bare ZnO and Fe‐ZnO materials fabricated by solvothermal route was confirmed by XRD and FTIR spectroscopy, whereas the SEM morphological investigations revealed the formation of coral like to granular particles. The band gap energies of the synthesized materials were observed to be shifted to the blue region on gradual Fe doping, indicating the suitability of the material for photocatalysis. The photocatalytic activity of the as‐synthesized ZnO and Fe‐ZnO materials was evaluated under sunlight and mercury lamp light, wherein the 6% Fe‐ZnO material showed more than 98% degradation of amaranth dye within 80 minutes in sunlight. The kinetic studies showed pseudo‐first‐order degradation reaction with a rate constant of 0.0114 min‐1 in sunlight. The effects of catalyst loading, light source and stability of the photocatalyst was also explored along with a proposed photogenerated free radical based dye degradation mechanism.This article is protected by copyright. All rights reserved.

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Sol-gel synthesis, characterizations of efficient Y3+ doped ZnO nanoparticles for photocatalytic dye degradation and energy storage applications

Khan,

Ramzan,

Khan

et al. 2024

J Sol-Gel Sci Technol

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Facile preparation of Ga-doped ZnO nanostructures by composite-hydroxide-mediated synthesis route for high-performance pseudocapacitors

Cited by 19 publications

References 62 publications

Effect of thickness on properties of La-doped Zinc Blende/Wurtzite ZnO thin films prepared by spray pyrolysis

Effect of thickness on properties of La-doped Zinc Blende/Wurtzite ZnO thin films prepared by spray pyrolysis

Investigating the Photocatalytic Degradation of Amaranth Dye in Water Environment using Visible Light‐Activated Fe‐Doped ZnO Nanoparticles

Sol-gel synthesis, characterizations of efficient Y3+ doped ZnO nanoparticles for photocatalytic dye degradation and energy storage applications

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