A study on the stability and green synthesis of silver nanoparticles using Ziziphora tenuior (Zt) extract at room temperature

• Published in: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 134; pp. 310 - 315
• Main Authors: Sadeghi, Babak, Gholamhoseinpoor, F.
• Format: Journal Article
• Language: English
• Published: England Elsevier B.V 05.01.2015
• Subjects: Green Chemistry Technology; Green synthesis; Lamiaceae - chemistry; Leaf extracts; Metal Nanoparticles - chemistry; Metal Nanoparticles - ultrastructure; Nanoparticle biosynthesis; Nanotechnology; Plant Extracts - chemistry; Scanning electron microscopy (SEM); Silver - chemistry; Silver nanoparticles; Spectroscopy, Fourier Transform Infrared; Leaf extracts; Green synthesis; Scanning electron microscopy (SEM); Nanoparticle biosynthesis; Silver nanoparticles
• DOI: 10.1016/j.saa.2014.06.046
• ISSN: 1386-1425

We describe the synthesis of silver nanoparticles (Ag-NPs) using seed aqueous extract of Pistacia atlantica (PA). UV–visible spectroscopy, X-ray diffraction (XRD), Fourier transform infra red spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and X-ray energy dispersive spectrophotometer (EDAX) were performed to ascertain the formation of Ag-NPs. It was observed that the growths of Ag-NPs are stopped within 35min of reaction time. The results confirmed that the (PA) is a very good eco friendly and nontoxic source for the synthesis of Ag-NPs as compared to the conventional chemical/physical methods. [Display omitted] •Biosynthesis of Ag-NPs has been done with Ziziphora tenuior (Zt) extract.•The growths of Ag-NPs are stopped within 35min of reaction time.•The results of TEM, confirm that the extract of Zt can synthesis Ag-NPs. Biomolecules present in plant extracts can be used to reduce metal ions to nanoparticles in a single-step green synthesis process. This biogenic reduction of metal ion to base metal is quite rapid, readily conducted at room temperature and pressure, and easily scaled up. Mediated Synthesis by plant extracts is environmentally benign. The involved reducing agents include the various water soluble plant metabolites (e.g. alkaloids, phenolic compounds, terpenoids) and co-enzymes. Silver (Ag) nanoparticles have the particular focus of plant-based syntheses. Extracts of a diverse range of Ziziphora tenuior (Zt) have been successfully used in making nanoparticles. The aim of this study was to investigate the antioxidant properties of this plant and its ability to synthesize silver nanoparticles. Z.tenuior leaves were used to prepare the aqueous extract for this study. Silver nanoparticles were characterized with different techniques such as UV–vis spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), Scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Transmission electron microscopy experiments showed that these nanoparticles are spherical and uniformly distributed and its size is from 8 to 40nm. FT-IR spectroscopy revealed that silver nanoparticles were functionalized with biomolecules that have primary amine group (NH2), carbonyl group, OH groups and other stabilizing functional groups. X-ray diffraction pattern showed high purity and face centered cubic structure of silver nanoparticles with size of 38nm. In addition to plant extracts, live plants can be used for the synthesis. Here were view the methods of making nanoparticles using plant extracts. The scanning electron microscopy (SEM) implies the right of forming silver nanoparticles. The results of TEM, SEM, FT-IR, UV–VIS and XRD confirm that the leaves extract of Zt can synthesis silver nanoparticles.