Green-synthesis of Ag2O nanoparticles for antimicrobial assays**

Silver oxide nanoparticles (Ag2O NPs) in the aqueous colloidal state were synthesized using the green method. Aqueous silver nitrate was prepared and mixed jointly with an aqueous extract of Lawsonia inermis (henna) leaf and heated with stirring at 75 °C for 1h. Then, an aqueous colloidal solution o...

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Autores principales:	Fayyadh Ali Abdullah, Jaduaa Alzubaidy Muneer H.
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	antimicrobial lawsonia inermis ag2o nps fungi Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/16e086c7e17445178c33a225540fbbac
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spelling	oai:doaj.org-article:16e086c7e17445178c33a225540fbbac2021-12-05T14:10:52ZGreen-synthesis of Ag2O nanoparticles for antimicrobial assays**0334-89382191-024310.1515/jmbm-2021-0024https://doaj.org/article/16e086c7e17445178c33a225540fbbac2021-11-01T00:00:00Zhttps://doi.org/10.1515/jmbm-2021-0024https://doaj.org/toc/0334-8938https://doaj.org/toc/2191-0243Silver oxide nanoparticles (Ag2O NPs) in the aqueous colloidal state were synthesized using the green method. Aqueous silver nitrate was prepared and mixed jointly with an aqueous extract of Lawsonia inermis (henna) leaf and heated with stirring at 75 °C for 1h. Then, an aqueous colloidal solution of Ag2O NPs with a dark brown colour is forming. The physicochemical characterization of Ag2O NPs was studied using different techniques. A polycrystalline structure of (Ag2O/Ag) in face-centred cubic and cubic phases was revealing via grazing incident X-ray diffraction (GIXRD) patterns. Energy-dispersive X-ray analysis (EDX) spectra confirmed GIXRD results through peaks corresponding to the silver and oxygen elements making up the accurate composition of the silver oxide. UV-Vis absorbance peak of the localized surface plasmon resonance (SPR) appeared at the visible region and exhibited a blueshift at ∼425 nm with an energy bandgap ∼2.8 eV. The surface morphology and the size of the silver nanoparticles were analyzed using high resolution (FE-SEM) microscopy. FTIR spectra of Ag2O NPs has showed a shift in the bands compared to those produced by aqueous extract of the henna leaf (only). (0.4 molars) Ag2O NPs has showed excellent antimicrobial activity assays against all the pathogens microbe's strains. Henna plant extract (only) has showed poor activity compared to Ag2O NPs. In comparison, the inhibition zone diameter of the gram-negative Bacteria is more considerable than the gram-positive bacteria. Moreover, Ag2O NPs activity against Bacteria is more prominent than fungi.Fayyadh Ali AbdullahJaduaa Alzubaidy Muneer H.De Gruyterarticleantimicrobiallawsonia inermisag2o npsfungiMechanical engineering and machineryTJ1-1570ENJournal of the Mechanical Behavior of Materials, Vol 30, Iss 1, Pp 228-236 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	antimicrobial lawsonia inermis ag2o nps fungi Mechanical engineering and machinery TJ1-1570
spellingShingle	antimicrobial lawsonia inermis ag2o nps fungi Mechanical engineering and machinery TJ1-1570 Fayyadh Ali Abdullah Jaduaa Alzubaidy Muneer H. Green-synthesis of Ag2O nanoparticles for antimicrobial assays**
description	Silver oxide nanoparticles (Ag2O NPs) in the aqueous colloidal state were synthesized using the green method. Aqueous silver nitrate was prepared and mixed jointly with an aqueous extract of Lawsonia inermis (henna) leaf and heated with stirring at 75 °C for 1h. Then, an aqueous colloidal solution of Ag2O NPs with a dark brown colour is forming. The physicochemical characterization of Ag2O NPs was studied using different techniques. A polycrystalline structure of (Ag2O/Ag) in face-centred cubic and cubic phases was revealing via grazing incident X-ray diffraction (GIXRD) patterns. Energy-dispersive X-ray analysis (EDX) spectra confirmed GIXRD results through peaks corresponding to the silver and oxygen elements making up the accurate composition of the silver oxide. UV-Vis absorbance peak of the localized surface plasmon resonance (SPR) appeared at the visible region and exhibited a blueshift at ∼425 nm with an energy bandgap ∼2.8 eV. The surface morphology and the size of the silver nanoparticles were analyzed using high resolution (FE-SEM) microscopy. FTIR spectra of Ag2O NPs has showed a shift in the bands compared to those produced by aqueous extract of the henna leaf (only). (0.4 molars) Ag2O NPs has showed excellent antimicrobial activity assays against all the pathogens microbe's strains. Henna plant extract (only) has showed poor activity compared to Ag2O NPs. In comparison, the inhibition zone diameter of the gram-negative Bacteria is more considerable than the gram-positive bacteria. Moreover, Ag2O NPs activity against Bacteria is more prominent than fungi.
format	article
author	Fayyadh Ali Abdullah Jaduaa Alzubaidy Muneer H.
author_facet	Fayyadh Ali Abdullah Jaduaa Alzubaidy Muneer H.
author_sort	Fayyadh Ali Abdullah
title	Green-synthesis of Ag2O nanoparticles for antimicrobial assays**
title_short	Green-synthesis of Ag2O nanoparticles for antimicrobial assays**
title_full	Green-synthesis of Ag2O nanoparticles for antimicrobial assays**
title_fullStr	Green-synthesis of Ag2O nanoparticles for antimicrobial assays**
title_full_unstemmed	Green-synthesis of Ag2O nanoparticles for antimicrobial assays**
title_sort	green-synthesis of ag2o nanoparticles for antimicrobial assays**
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/16e086c7e17445178c33a225540fbbac
work_keys_str_mv	AT fayyadhaliabdullah greensynthesisofag2onanoparticlesforantimicrobialassays AT jaduaaalzubaidymuneerh greensynthesisofag2onanoparticlesforantimicrobialassays
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Green-synthesis of Ag2O nanoparticles for antimicrobial assays**

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