Characterization and low-cost, green synthesis of Zn2+ doped MgO nanoparticles (original) (raw)
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International Journal of Innovative Research and Growth, 2020
Nanotechnology is currently a flourishing field provides a novel way to fabricate nanoparticles exploring biological sources. The present study is devoted to doping Zn 2+ in MgO nanoparticles. Synthesized via green synthesis method using Indian ber seed and Jamun seed extract, were calcined at 450˚C to get the Zn 2+ doped MgO nanoparticles. The crystalline nature and particle size of the samples were characterized by X-ray diffraction analysis (XRD). The presence of the functional group in the sample is investigated using FTIR. The morphology of samples was studied by scanning electron microscope (SEM) and the presence of Zn in the sample was confirmed by energy dispersive X-ray analysis (EDX). The optical band gap of the Zn 2+ doped MgO nanoparticles sample was studied by UV-Vis spectroscopy. Optical band gap energy was found 3.10 eV with Zn 2+ doped MgO. SEM image of Zn2+ doped MgO particles was obtained morphology of Zn 2+ doped MgO structures. Most of these structures have diameters of 20-70 nm. The optical properties of the samples were investigated using photoluminescence spectroscopy (PL) analysis to obtain excitation and emission spectra of the samples and absorption near 335 nm and emission bands attributed to defects were observed in the PL spectra. Energy dispersive X-ray spectroscopy (EDAX) define the presence of elemental metal signal (magnesium, zinc and oxygen) was confirmed.
Results in Materials, 2020
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Eco-friendly Synthesis of Magnesium Oxide Nanoparticles using Arabic Gum
Quarterly Journal of Applied Chemical Research, 2018
Magnesium oxide nanoparticles were synthesized using Arabic gum as a biotemplate andmagnesium nitrate as the magnesium source by the sol-gel method. This method has manyadvantages such as nontoxic, economic viability, ease to scale up, less time consuming andenvironmental friendly approach for the synthesis of MgO nanoparticles without using anyorganic chemicals. Nanoparticles were characterized by Fourier transform infrared (FT-IR)spectroscopy, UV-visible spectroscopy and powder X-ray diffraction (XRD). The averagecrystallite size of MgO nanoparticles was calculated using Scherrer formula and WilliamsonHall equation. The powder X-ray diffraction (XRD) analysis revealed the formation of cubicphase MgO with average particle size of 14 (Scherrer formula) and 5.3 (Williamson Hallequation) nm.
International Journal of Recent Advances in Multidisciplinary Research, 2023
This work describes a novel green and ecofriendly technique for manufacture of pure and metal doped zinc oxide nanoparticles utilising aloe vera plant extract. The microwave approach was used to biosynthesize pure and 1.5 wt% Mg doped nanostructured zinc oxide utilising high purity metal nitrates and aloe vera plant extract. Diffuse reflectance spectroscopy (DRS), X-ray diffraction method (XRD), Fourier transform infrared spectroscopy (FT-IR), High resolution scanning electron microscope (HR-SEM), and Photoluminescence (PL) spectroscopy were used to characterise the synthesized doped zinc oxide nanoparicles. XRD analyses supported the formation of the hexagonal wurtzite structure in zinc oxide. The FT-IR method also supported the creation of the zinc oxide phase. DRS and PL were used to determine the optical characteristics. The band gap of 1.5 wt% Mg doped zinc oxide was found to be greater than that of pure zinc oxide.
Sol-Gel Synthesis of Zn Doped MgO Nanoparticles and Their Applications
Integrated Ferroelectrics, 2020
The physicochemical properties of metal oxide nanoparticles can be significantly improved by doping. MgO and Zn 2þ doped MgO (Zn:MgO) offers potential applications in photonic devices falling in the UV and visible region. In the present paper, sol gel method was employed to synthesize pure and Zn 2þ doped MgO nanoparticles. XRD pattern inferred the crystalline nature of material and also the slight change in peak due to the dopant. FESEM showed the formation of nanoparticles with almost same shapes and dimensions with little agglomeration. Optical properties were studied by using UV-Vis and PL techniques. Doping of Zn 2þ in MgO nanoparticles was verified by EDS.
Oriental Journal of Chemistry
MgO nanoparticle was synthesized by sol-gel method from magnesium acetate and oxalic acid dissolved in methanol followed by annealed process. Characterization of functional groups was performed using (FTIR) Fourier Transforms Infrared spectroscopy, crystal profile analysis using (XRD) X-ray Diffraction and morphology using (SEM) Scanning Electron Microscopy. The FTIR and XRD results indicated that the magnesium acetate converted into magnesium oxalate (Precursor), and then the anneal process was changed into MgO nanoparticles. The Scherrer's equation used to determine the distribution of MgO nanoparticle crystals. Modified Williamson-Hall plot is used to determine the strain, stress and energy density value (micro structural properties) based on angle values 2θ and (FWHM) Full width at half maximum of XRD angles from 10° to 80°. The results of the XRD and SEM analysis show that magnesium complexes have changed. The solid layer formed by the Mg polymer complex network is transformed into a cubic structure.
Materials Today: Proceedings, 2017
Sm3+ doped (0.1-5mol %) MgO nanoparticles (NPs) were synthesized by a facile bio mediated combustion route by using Aloe Vera gel. The obtained products were characterized by PXRD, FTIR, DRS and SEM. PXRD patterns show typical peak at 2 value 37.02, 42.88, 62.33, 7.76 and 78.57 which corresponds to hexagonal cubic structure of MgO (JCPDS card no. 4-829). The crystallite size calculated from Scherrer's formula was found to be in the range 12-30 nm. SEM images clearly reveal that irregular, pours and agglomerated morphologies. The optical band gap decreaces from 5.23 eV to 5.00 eV it is confirmed by DRS. The PL properties of Sm3+ doped MgO under ~378 nm excitation was studied in order to investigate the possibility of its use in display applications. Further, the influence of Sm3+ ion on MgO matrix was investigated for the PC decolorization of Malachite green.
Asian Journal of Chemistry, 2015
It is well recognized that the nanoparticles have wide ranging applications in the field of agriculture, optical fibres, antimicrobials, electronics, catalyst, biomedical, bio labelling, sensitized solar cell, pharmaceuticals, etc. 1,2. The performance of a nanomaterial can be tuned depending on the size, shape and crystal structure. Nanomaterials can be prepared through green, chemical or microbial synthesis 3. Magnesium oxide is one of the widely used metal oxide for catalytic applications. Magnesium oxide is nontoxic and biodegradable. However, MgO is toxic to microbes, through its binding to intracellular protein at low concentration 4. Magnesium oxide is also used in remediation of toxic waste and as superconductor products 5. Gas and humidity sensors have been made with MgO as the key constituent. Magnesium oxide is also a good adsorbent for vapours and gases such as acetone, ammonia, carbon dioxide, methanol, dimethylamine, trimethyl acetaldehyde, benzaldehyde and acetaldehyde 6. Chemical methods used for the preparation of MgO nanoparticles include microwave-induced combustion, precipitation, hydrothermal, aerosol combustion, flame spray pyrolysis, chemical vapour deposition, flame metal combustion, sonication, sol-gel method and lysine nitrate combustion 5,7,8. Magnesium oxides have been synthesized in different shapes leading to nanoplates, nanocubes, nanoparticles and nanowires 9-11 .
International Journal of Enviornment and Climate Change, 2023
Among plant extracts, neem leaf extract was found effective for successful synthesis of MgO nanoparticles. The main phytochemicals present in neem leaf extract acts as reducing and capping agents for synthesis of MgO nanoparticles. The bio reduced MgO nanoparticles were characterized by using surface plasmon resonance analysis (UV-Vis spectroscopy), particle size and distribution analysis (PSA), surface morphology analysis (SEM) and elemental distribution analysis (EDX). The UV-Vis spectral analysis confirmed that the maximum absorption at 279 nm range corresponds to the intrinsic band gap of MgO nanoparticles. Particle size analyzer confirmed synthesized particles Original Research Article
Ceramics International, 2009
Zinc oxide nanoparticles were synthesized using a simple precipitation method with zinc sulfate and sodium hydroxide as starting materials. The synthesized sample was calcined at different temperatures for 2 h. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and proton-induced X-ray emission (PIXE) analysis. SEM images show various morphological changes of ZnO obtained by the above method. The average crystallite sizes of the samples were calculated from the full width at half maximum of XRD peaks by using Debye-Scherrer's formula and were found to be in the nanorange. EDS shows that the above route produced highly pure ZnO nanostructures. PIXE technique was used for trace elemental analysis of ZnO. The optical band gaps of various ZnO powders were calculated from UV-visible diffuse reflectance spectroscopic studies.