期刊名称：International Journal of Advances in Engineering and Management
电子版ISSN：2395-5252
出版年度：2021
卷号：3
期号：8
页码：1711-1730
DOI：10.35629/5252-030815571562
语种：English
出版社：IJAEM JOURNAL
摘要：Metal oxides are significant technological materials to be used in photonic and electronic devices. They can also be used in various fields like catalysis, ceramics, petrochemical products, environmental remediation, drug delivery, medicine, cancer therapy and in antimicrobial activity as well. There are basically three methods to synthesis metal oxide nano-particles physical, chemical, and green methods. Fabrication of ecofriendly metal oxide nanoparticles using biogenic sources are currently used for their synthesis replacing the harmful and toxic chemicals. In present research work the main focus was on the facile synthesis of MgO-NPs by using Corn silk(Zea may) extract via Green method. Its non-toxic and eco-friendly method to synthesize Magnesium oxide nanoparticles (MgO-NPs). The precursor used in this method was Magnesium nitrate hexahydrateMg(NO3)2.6H2O and corn silk extract. The precursors act as reducing and capping agent in the reaction. Thus, the obtained particles were then characterized by applying different analytical characterization techniques such as UV-Vis spectroscopy, SEM, XRD, FTIR and also study antimicrobial properties. X-Ray Diffractometer was used to confirm phase formation and to calculate average crystallite size and also to analyze the average particle size. SEM scanning electron microscope an advanced form of microscope was used for morphological study. UV-Visible spectroscopy was used to analyze absorption pattern and also Fourier Transform Infrared (FTIR) spectroscopy for analyzing functional groups involved in the reaction. Antimicrobial assay was performed to evaluate the effect of MgO-NPs against gram positive and gram negative bacteria. The zone of inhibition revealed that MgO-NPs inhibit the growth of both gram negative bacteria in a concentration dependent manner MgO-NPs form. In UV-Vis at 250 nm highest peak was observed which can be ascribed to Magnesium oxide nanoparticles and the cutoff peak for both the precursors used to synthesize MgO-NPs; corn silk extract and magnesium nitrate hexahydrate is around 221 nm. SEM showed that nanoparticles are uniformly distributed on the entire surface having size less than 20nm. SEM scanned images showed that nanoparticles are present in the form of assemblies that are round in shape. X-ray diffractogram showed multiple distinctive peaks indexed to various crystal planes of cubic phase MgO. No secondary peak was detected in the diffractogram indicating that the obtained final product is pure. FTIR spectra of MgO-NPs synthesized by using corn silk extract is recorded in the range of 500 to 4000 cm-1 . IR spectrum also showed that corn silk specimen is rich in carboxylic acid, polyphenol, amino acid, polysaccharide and proteins.
