Green synthesis of Mn<sub>x</sub>Zn<sub>(1−x)</sub>O nanostructure using Azadirachta indica leaf extract and its microstructural and optical study

Barman, Subhodeep; Sikdar, Suranjan; Biswas, Abhijit; Islam, Anikul; Das, Rahul

doi:10.1088/1402-4896/ac520c

Cited by 5 publications

(2 citation statements)

References 42 publications

(51 reference statements)

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“…Moreover, the peak observed at 612 cm −1 and 652 cm −1 represents the Zr-O mode which also highlights the presence of ZrO 2 in the nanocomposites [60]. In addition, the transmission peak within 1000 cm −1 means the existence of metal oxide (M-O) bonds [47,48,59]. The two peaks at 1100 cm −1 and 1152 cm −1 could be attributed to the M-O-M and O-M-O vibrational bonds [60].…”

Section: Analysis Of Ftir Spectramentioning

confidence: 92%

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A comprehensive study on ZrO₂-ZnO nanocomposites synthesized by the plant-mediated green method

Barman

Sikdar²,

Das

2023

Phys. Scr.

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Zirconia – zinc oxide (ZrO2-ZnO) nanocomposites with three different amounts of zirconia (ZrO2) contents (5%, 10%, and 15%) were successfully synthesized using the leaf extract of Azadirachta indica (also known as Neem). The prepared nanocomposites were examined from microstructural and optical point of view. The existence of the mixed phase of hexagonal ZnO together with the tetragonal ZrO2 in each sample was confirmed by the X-ray diffraction data. Rietveld refinement was performed to determine the microstructural parameters. A significant morphological as well as microstructural change was also noticed from SEM and HRTEM images with the admixture of increasing quantities of zirconia. A characteristic metal oxide band within 1000 cm-1, was confirmed by the Fourier transform infrared spectroscopy. UV-Visible spectra confirm the decrease in optical band gap energy values from 3.30 eV to 3.15 eV for the ZnO phase and from 3.93 eV to 3.73 eV for tetragonal ZrO2 phase with the increasing amount of ZrO2 admixture into the ZnO host material. All of these findings would likely be useful not only in the manufacture of electronic and optical devices, but would also be useful for water purification through photocatalytic activities.

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Section: Analysis Of Ftir Spectramentioning

confidence: 92%

“…The distortion parameter (ε v ), degree of distortion (R), density (ρ), etc. were determined using the standard lattice geometry relationships [47][48][49].…”

Section: Characterizationmentioning

confidence: 99%

A comprehensive study on ZrO₂-ZnO nanocomposites synthesized by the plant-mediated green method

Barman

Sikdar²,

Das

2023

Phys. Scr.

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Enhancing the Electrical and Photoelectrical Efficacy with the Synergistic SrO–ZnO Nano‐Heterosystem

Jaffri,

Ahmad,

Abrahams

et al. 2024

Energy Tech

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Development of the sustainable materials for consolidation of the energy sustainability needs special emphasis in the current era of the increasing energy demand. In compliance with this, present investigation reports first investigation on the amended sustainable production conjugated with the microwave process of the strontium oxide (SrO) and zinc oxid (ZnO) forming SrO–ZnO nanoscale heterostructure. The band gap of the prepared green nanomaterial was tuned reducing it from 5.8 to 3.6 eV upon the formation of the nanocomposite. With the mixed cubic and hexagonal phase, these particles have average crystallite size of 66.4 nm and irregular shape. The electro‐catalytic assays have expressed the bifunctional role of the SrO–ZnO towards generation of the oxygen and hydrogen. However, it has an excellent hydrogen production capacity with the lower overpotential of 126 mV and Tafel slopes 123.6 mV dec−1. In addition, this nanomaterial has also exhibited superior electrochemical charge storage for batter applications with the unit capacity of 541.7 mAH g−1 and Rs = 0.4 Ω, reflecting facilitated diffusion at the interface. In terms of photovoltaic applications, SrO–ZnO nanocomposite has effectively passivated the perovskite solar cells by improving efficiency from 7.2% to 15.1%. Such an improved performance is associated with the chemical synergism.

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Synthesis of tetragonal SnO₂ photocatalyst for Micro‐structural analysis and visible light driven Fenton‐like degradation of Methylene Blue

Banu

Barman²,

Sinha

et al. 2023

ChemistrySelect

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The present study reports a simple co‐precipitation followed by solid state method for the synthesis of tetragonal SnO2 nanoparticles.The nanoparticles were characterized by XRD, FTIR, SEM, DLS, UV‐vis, and PL techniques to examine the structural properties, functional group, morphological and electronic properties. As prepared SnO2 NPs has been used for Fenton‐like degradation of Methylene blue(MB) in presence of solar light in aqueous solution.The structural analysis and Rietveld refinement revealed that the tetragonal SnO2 NPs have been well formed. The mean crystallite size of the synthesized nanoparticles was found to be 16.47 nm using the Scherrer formula.The Williamson‐Hall method determines strain throughout the crystal. The effect of various parameters such as catalyst dose, dye concentration, H2O2 concentration, pH and temperature was examined.The complete degradation of MB was obtained at pH=9. The results obtained from kinetics showed that degradation of MB dye follows pseudo‐first order rate with the rate constant k1 is 7.889×10−2 min−1. From Brunauer‐Emmet‐Teller (BET) surface analysis, we have determined the surface area and average pore size of SnO2 NPs. All parameters were measured by Brunauer‐Emmet‐Teller (BET) surface analysis with nitrogen adsorption‐desorption isotherm.The pore volume and pore diameter was calculated by BJH (Barrett‐Joyner‐Halenda) model.

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Green synthesis of Mn_xZn_(1−x)O nanostructure using Azadirachta indica leaf extract and its microstructural and optical study

Cited by 5 publications

References 42 publications

A comprehensive study on ZrO₂-ZnO nanocomposites synthesized by the plant-mediated green method

A comprehensive study on ZrO₂-ZnO nanocomposites synthesized by the plant-mediated green method

Enhancing the Electrical and Photoelectrical Efficacy with the Synergistic SrO–ZnO Nano‐Heterosystem

Synthesis of tetragonal SnO₂ photocatalyst for Micro‐structural analysis and visible light driven Fenton‐like degradation of Methylene Blue

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Green synthesis of MnxZn(1−x)O nanostructure using Azadirachta indica leaf extract and its microstructural and optical study

Cited by 5 publications

References 42 publications

A comprehensive study on ZrO2-ZnO nanocomposites synthesized by the plant-mediated green method

A comprehensive study on ZrO2-ZnO nanocomposites synthesized by the plant-mediated green method

Enhancing the Electrical and Photoelectrical Efficacy with the Synergistic SrO–ZnO Nano‐Heterosystem

Synthesis of tetragonal SnO2 photocatalyst for Micro‐structural analysis and visible light driven Fenton‐like degradation of Methylene Blue

Contact Info

Product

Resources

About

Green synthesis of Mn_xZn_(1−x)O nanostructure using Azadirachta indica leaf extract and its microstructural and optical study

A comprehensive study on ZrO₂-ZnO nanocomposites synthesized by the plant-mediated green method

A comprehensive study on ZrO₂-ZnO nanocomposites synthesized by the plant-mediated green method

Synthesis of tetragonal SnO₂ photocatalyst for Micro‐structural analysis and visible light driven Fenton‐like degradation of Methylene Blue