Biosynthesis of magnesium Oxide nanoparticles using the extracts of puniga granatum peels and brassica oleracea

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Muthulakshm M ◽  
Naganandhini B

Nanotechnology brings the enormous application in the field of medicine, agriculture and aquaculture technologies, which is shifted from the chemical based solutions. The current work concerned on green synthesis of Magnesium Oxide nanoparticle from the extracts of pomegranate peels and cauliflower, in which the Magnesium Sulphate Heptahydrate has been act as a precursor. Because of its high hardness property of Magnesium Oxide,it is used as fire retardant in plastic tubes and chemical fibre. The various analytical studies and morphological characteristics were taken for MgO nanoparticles such as XRD, SEM, FTIR, EDS, UV-Vis and Antibacterial activity. From the XRD, the crystallinity of MgO particles was found out. From the FTIR and UV-Vis spectrum, the powdered composition of the samples and their optical properties were determined. SEM predicts the morphological structure of MgO nanoparticles and their elemental composition were determined in the EDS analysis. Antibacterial activity for MgO nanoparticles exhibited good results against gram positive and gram negative bacterial.




2018 ◽  
Vol 7 (1) ◽  
pp. 28-34 ◽  
Author(s):  
Alaa J. Kadham ◽  
Dalal Hassan ◽  
Najlaa Mohammad ◽  
Ahmed Hashim Ah-yasari

Nanocomposites used in many optical devices applications. This aims to preparation of new type of polymer and study their optical properties. The polyvinyl pyrrolidone-carboxymethyl cellulose blend and magnesium oxide nanocomposites have been fabricated. The nanocomposites are prepared for different concentrations of polymer blend and magnesium oxide nanoparticles. The optical properties of nanocomposites were studied. The experimental results showed that the absorbance, absorption coefficient, refractive index, extinction coefficient, real and imaginary parts of dielectric constant and optical conductivity of (PVP-CMC) blend are increased with increase of the MgO nanoparticles concentration. The transmittance and energy band gap are decreased with increase of the MgO nanoparticles concentration. The nanocomposites have high absorbance in UV region which may be used for radiation shielding application.



Author(s):  
Elaf Ayad Kadhem ◽  
Miaad Hamzah Zghair ◽  
Sarah , Hussam H. Tizkam, Shoeb Alahmad Salih Mahdi ◽  
Hussam H. Tizkam ◽  
Shoeb Alahmad

magnesium oxide nanoparticles (MgO NPs) were prepared by simple wet chemical method using different calcination temperatures. The prepared NPs were characterized by Electrostatic Discharge (ESD), Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD). It demonstrates sharp intensive peak with the increase of crystallinty and increase of the size with varying morphologies with respect to increase of calcination temperature. Antibacterial studies were done on gram negative bacteria (E.coli) and gram positive bacteria (S.aureus) by agar disc diffusion method. The zones of inhibitions were found larger for gram positive bacteria than gram negative bacteria, this mean, antibacterial MgO NPs activity more active on gram positive bacteria than gram negative bacteria because of the structural differences. It was found that antibacterial activity of MgO NPs was found it has directly proportional with their concentration.



2020 ◽  
Vol 3 (1) ◽  
pp. 30-33
Author(s):  
Muthulakshmi M ◽  
Madhumitha G

Nanotechnology is a field of applied science focused on design, synthesis and characterization of nanomaterials. The nickel and magnesium have improved their applications in transparent electrodes and nano electronics. In addition, magnesium oxide has moisture resistance and high melting point properties. In the present work has been carried out in the development of green crystalline powder of nickel doped magnesium oxide nanoparticles by Co-precipitation method, from the mixture of nickel chloride and magnesium chloride with KOH as solvent. From the XRD results, crystalline size of the particle can be observed. Spherical structure of Ni doped MgO nanoparticles were indicated by SEM results and powdered composition of samples were obtained from FTIR. EDAX represents the peak composition of the nanoparticle. The above analytical techniques have confirmed that the Ni doped MgO nanoparticles obtained from the mixture of NiCl2 and MgCl2.



2020 ◽  
Vol 6 (2) ◽  
pp. 103-107 ◽  
Author(s):  
Seyyed Mohammad Javadi

Background: Rubber vulcanization is a consolidated chemical process to enhance the mechanical properties of the polymeric material by sulfur crosslinking of the polymer chains, such as rubber. Vulcanization Activators are important rubber processing additives that activate sulfur cure and improve the efficiency of sulfur-based cure systems. The most common activator is zinc fatty acid ester that is often formed in-situ by the reaction of fatty acid with zinc oxide. Although zinc is one of the less harmful heavy metals, according to European Council Directive 2004/73/EC, the reduction of zinc level in the environment has become an important task because of its toxic effect on aquatic organisms. : The current study reviews the research achievements in the field of reducing the consumption of micronutrients of ZnO particles based on the use of nanoparticles instead of them in the polymer industry. Among the proposed methods, due to the less environmental effects of magnesium oxide, the use of MgO nanoparticles instead of zinc oxide has also achieved good results. Objective: The aim of this paper is considering suggested different methods on the reduction of using ZnO particles in related industries, the use of ZnO nanoparticles has had better results than its particles. In addition, due to the less environmental effects of magnesium oxide, magnesium oxide nanoparticles can be used instead of micronutrients of zinc oxide. Overall, the results of various investigations show that reducing the diameter of the zinc oxide particles reduces the amount required for curing the rubber and thus reduces its toxic effects. Also, the use of magnesium oxide nanoparticles instead of zinc oxide in different concentrations is investigated.



Author(s):  
Proma Bhattacharya ◽  
Aishee Dey ◽  
Sudarsan Neogi

The exact mechanism behind the antibacterial efficacy of nanoparticles remain unexplored till date. This study is aimed at shedding light on the mechanism adopted by magnesium oxide nanoparticles prepared in...



2021 ◽  
Vol 3 ◽  
pp. 29-41 ◽  
Author(s):  
Amr Fouda ◽  
Saad El-Din Hassan ◽  
Mohamed Ali Abdel-Rahman ◽  
Mohamed M.S. Farag ◽  
Amr Shehal-deen ◽  
...  


2018 ◽  
Vol 161 ◽  
pp. 433-441 ◽  
Author(s):  
Xiaole Zhang ◽  
Weijie Wang ◽  
Yijiang Zhang ◽  
Tao Zeng ◽  
Changhong Jia ◽  
...  


2017 ◽  
Vol 4 (2) ◽  
pp. 025028 ◽  
Author(s):  
L S Reddy Yadav ◽  
K Lingaraju ◽  
K Manjunath ◽  
G K Raghu ◽  
K H Sudheer Kumar ◽  
...  


2020 ◽  
Author(s):  
Seyed Peiman Ghorbanzade Zaferani ◽  
Nima Nabian ◽  
Sayed Mahmood Rabiee

Abstract The authors have withdrawn this preprint due to author disagreement.



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