scholarly journals Facile Biogenic Synthesis and Characterization of Seven Metal-Based Nanoparticles Conjugated with Phytochemical Bioactives Using Fragaria ananassa Leaf Extract

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 3025
Author(s):  
Maryam Bayat ◽  
Meisam Zargar ◽  
Tamara Astarkhanova ◽  
Elena Pakina ◽  
Sergey Ladan ◽  
...  
Keyword(s):  
Leaf Extract ◽  
Metal Oxide Nanoparticles ◽  
Cost Effective ◽  
Correlation Spectroscopy ◽  
Oxide Nanoparticles ◽  
Fragaria Ananassa ◽  
X Ray ◽  
Stabilizing Agents ◽  
Characterization Techniques ◽  
Vis Spectroscopy

In this investigation, for the first time, we used Fragaria ananassa (strawberry) leaf extract as a source of natural reducing, capping or stabilizing agents to develop an eco-friendly, cost-effective and safe process for the biosynthesis of metal-based nanoparticles including silver, copper, iron, zinc and magnesium oxide. Calcinated and non-calcinated zinc oxide nanoparticles also synthesized during a method different from our previous study. To confirm the successful formation of nanoparticles, different characterization techniques applied. UV-Vis spectroscopy, X-ray Diffraction (XRD) spectroscopy, Field Emission Scanning Electron Microscopy (FESEM) coupled with Energy Dispersive X-ray Spectroscopy (EDS), Photon Cross-Correlation Spectroscopy (PCCS) and Fourier Transformed Infrared Spectroscopy (FT-IR) were used to study the unique structure and properties of biosynthesized nanoparticles. The results show the successful formation of metal-based particles in the range of nanometer, confirmed by different characterization techniques. Finally, the presented approach has been demonstrated to be effective in the biosynthesis of metal and metal oxide nanoparticles.

scholarly journals Bio Synthesis of Beta Vulgaris Mediated ZnO Nanoparticles and Their Anti-Bacterial, Anti-Fungal, Anti-Diabetic and Anti-Cancer Activities

2021 ◽  
Vol 37 (4) ◽  
pp. 911-921
Author(s):  
Femina. F ◽  
H. Asia Thabassoom ◽  
S. Auxilia Ruby ◽  
J. Felicita Florence
Keyword(s):  
Beta Vulgaris ◽  
Metal Oxide Nanoparticles ◽  
Cost Effective ◽  
Inhibitory Effect ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Hazardous Chemical ◽  
Vis Spectroscopy ◽  
Anti Cancer ◽  
Anti Fungal

Plant extract mediated metal or metal oxide nanoparticles is a promising alternate to the chemical and physical methods. Application of nanoparticles in various fields get increased widely due to their properties. Current study involves the eco-friendly method of synthesis and pharmacological applications of zinc oxide nanoparticles (ZnO-NPs) using the aqueous beetroot (Beta vulgaris) extract. Aqueous Beta vulgaris extract has multiple bio-active phytochemicals especially antioxidants like anthocyanins and betacyanins, also reported a rich source of minerals. Synthesized ZnONPs were characterized with the aid of UV-Vis spectroscopy, FTIR, SEM, XRDand EDX. Antibacterial results suggests that, Beta vulgaris mediated ZnONPspossessthe maximum zone of inhibition against Escherichia coli then Staphylococcus aureus. On anti-fungal activity synthesized ZnONPS revealed greater inhibitory effect against Candida albicans fungi than the Aspergillusflavus. Synthesized ZnONPs exhibits the noticeable pharmacological activities against the anti-diabetic and anti-cancer activities (MCF-7 cell line, IC50=35.4µg/ml). This study has suggested an effective replacement for the hazardous chemical methods and lead to a cost-effective, environmentally -friendly method which can also be used as an antimicrobial, anti-diabetic and anti-cancer agents.

scholarly journals Biogenic synthesis of magnesium oxide nanoparticles using Manihot esculenta (Crantz) leaf extract

2019 ◽  
Vol 10 (1) ◽  
pp. 43-48 ◽  
Author(s):  
Enobong R. Essien ◽  
Violette N. Atasie ◽  
Anastecia O. Okeafor ◽  
Davies O. Nwude
Keyword(s):  
Electron Microscopy ◽  
Magnesium Oxide ◽  
Manihot Esculenta ◽  
Large Scale ◽  
Leaf Extract ◽  
Metal Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Manihot Esculenta Crantz ◽  
X Ray ◽  
Magnesium Oxide Nanoparticles

AbstractRecently, plant-mediated route or green approach for preparing metal and metal oxide nanoparticles has received enormous attention due to the ease of preparation and environmental friendliness when compared to physical and chemical methods. Plants contain phytochemicals which have been proposed as bio-reductants and capping agents for forming metal nanoparticles. Therefore, this study was aimed to prepare magnesium oxide nanoparticles (MgONPs) using aqueous extract of Manihot esculenta leaf. The leaf extract was first analyzed in a gas chromatograph–mass spectrometer (GC–MS) to examine the phytochemicals present. Then, the MgONPs formed were evaluated using UV–Visible (UV–Vis) spectrophotometry, scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDX), transmission electron microscopy (TEM), X-ray diffractometry (XRD) and Fourier transform infrared (FTIR) spectroscopy, to confirm the formation of MgONPs and to determine the morphology, elemental composition, shape and size, phase composition and nature of bonds present in the sample. Results revealed the formation of monodisperse, hexagonal shaped MgONPs of average size 36.7 nm having potentials for application in catalysis and as antimicrobial agent. Hence the process reported herein could be optimized for large-scale preparation of MgONPs.

scholarly journals Green Synthesis of Iron Oxide Nanoparticles by Using Ficus Carica Leaf Extract and Its Antioxidant Activity

2021 ◽  
Vol 12 (2) ◽  
pp. 2108-2116 ◽  
Keyword(s):  
Antioxidant Activity ◽  
Iron Oxide ◽  
Green Synthesis ◽  
Iron Oxide Nanoparticles ◽  
Leaf Extract ◽  
Metal Oxide Nanoparticles ◽  
Ficus Carica ◽  
Oxide Nanoparticles ◽  
Characterization Methods ◽  
Vis Spectroscopy

In every day, new nanoparticles have been synthesized, and their properties have been evaluated since their unique physical and chemical properties, which are very different from the precursors. Nanoscience also has significant advances in obtaining environmentally friendly and sustainable products. Iron oxide nanoparticles, one of the metal oxide nanoparticles, have different forms and properties. In recent years, iron oxide nanoparticles have been successfully synthesized from various plant species using green synthesis pathways and have been analyzed for different bioactivity properties. In this study, iron oxide nanoparticles were synthesized using a completely non-hazardous method using Ficus carica leaf extract. The synthesized product was characterized by SEM, EDX, XRD crystallography, FT-IR, and UV-Vis spectroscopy. Characterization methods have shown that the product was synthesized in mixed form with 43-57 nm size. In addition, the antioxidant activity of the product was analyzed, and it was recorded that the nanoparticle has remarkable antioxidant activity.

scholarly journals Green Synthesis of Metal and Metal Oxide Nanoparticles Using Different Plants’ Parts for Antimicrobial Activity and Anticancer Activity: A Review Article

Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1374
Author(s):  
Aysha Bukhari ◽  
Irfan Ijaz ◽  
Ezaz Gilani ◽  
Ammara Nazir ◽  
Hina Zain ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Green Synthesis ◽  
Anticancer Activity ◽  
Metallic Nanoparticles ◽  
Metal Oxide Nanoparticles ◽  
Cost Effective ◽  
Oxide Nanoparticles ◽  
Synthesis Of Nanoparticles ◽  
Stabilizing Agents ◽  
Co Nanoparticles

Nanotechnology emerged as a scientific innovation in the 21st century. Metallic nanoparticles (metal or metal oxide nanoparticles) have attained remarkable popularity due to their interesting biological, physical, chemical, magnetic, and optical properties. Metal-based nanoparticles can be prepared by utilizing different biological, physical, and chemical methods. The biological method is preferred as it provides a green, simple, facile, ecofriendly, rapid, and cost-effective route for the green synthesis of nanoparticles. Plants have complex phytochemical constituents such as carbohydrates, amino acids, phenolics, flavonoids, terpenoids, and proteins, which can behave as reducing and stabilizing agents. However, the mechanism of green synthesis by using plants is still highly debatable. In this report, we summarized basic principles or mechanisms of green synthesis especially for metal or metal oxide (i.e., ZnO, Au, Ag, and TiO2, Fe, Fe2O3, Cu, CuO, Co) nanoparticles. Finally, we explored the medical applications of plant-based nanoparticles in terms of antibacterial, antifungal, and anticancer activity.

Appraisal of innovative phytosynthetic CdO NPs from leaf extract of Ocimum Sanctum and their bactericidal activity against different strains

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Aarth R ◽  
Sudha A P ◽  
Sujatha B ◽  
Sowmya Lakshmi K
Keyword(s):  
Leaf Extract ◽  
Cadmium Oxide ◽  
Morphological Properties ◽  
Precipitation Method ◽  
Ocimum Sanctum ◽  
Oxide Nanoparticles ◽  
Average Crystalline Size ◽  
Face Centered Cubic ◽  
Bacterial Strains ◽  
X Ray

The phytosynthesis of n-type Cadmium Oxide Nanoparticles reduces the toxicity of the substance and makes it Eco-friendly. This Eco-friendly biosynthesis of CdO NPs was synthesized for the first time from the Queen of herbs, Ocimum Sanctum (holy basil).The biosynthesized Cadmium oxide was prepared using Ocimum leaf extract as a reductant and Cadmium Chloride and hydroxide as cadmium and oxide source materials by Co- Precipitation method. Thus obtained Cadmium Oxide Nanoparticles were characterized by different techniques such as X-ray diffraction (XRD), Fourier Transform infrared spectroscopy (FTIR), Scanning electron microscope (SEM),Energy dispersive X-ray spectroscopy(EDS) to study the structural and morphological properties. XRD pattern exhibited the formation of face centered cubic structure of CdO NPs with an average crystalline size of 11.5nm .The chemical bond formation of CdO NPs were confirmed by FTIR spectrum in the range of (400-4000cm-1). The SEM micrographs revealed the predominant formation of Cauliflower shape with a particle size in the range of 61-142nm. The high purity of the biosynthesized nanoparticles were confirmed by EDS analysis. Further it was tested against gram positive and gram negative bacterial strains and showed significant antibacterial activity. This biosynthetic research study opens an innovative window to progress our understanding of how CdO NPs shows resistance to different bacterial strains.

scholarly journals Phytosynthetic Fabrication of Lanthanum Ion-Doped Nickel Oxide Nanoparticles Using Sesbania grandiflora Leaf Extract and Their Anti-Microbial Properties

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 124
Author(s):  
Srihasam Saiganesh ◽  
Thyagarajan Krishnan ◽  
Golla Narasimha ◽  
Hesham S. Almoallim ◽  
Sulaiman Ali Alhari ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Optical Properties ◽  
Rare Earth ◽  
Nickel Oxide ◽  
Photoelectron Spectroscopy ◽  
Metal Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Nio Nanoparticles ◽  
X Ray ◽  
Sesbania Grandiflora

Over the past few years, the photogenic fabrication of metal oxide nanoparticles has attracted considerable attention, owing to the simple, eco-friendly, and non-toxic procedure. Herein, we fabricated NiO nanoparticles and altered their optical properties by doping with a rare earth element (lanthanum) using Sesbania grandiflora broth for antibacterial applications. The doping of lanthanum with NiO was systematically studied. The optical properties of the prepared nanomaterials were investigated through UV-Vis diffuse reflectance spectra (UV-DRS) analysis, and their structures were studied using X-ray diffraction analysis. The morphological features of the prepared nanomaterials were examined by scanning electron microscopy and transmission electron microscopy, their elemental structure was analyzed by energy-dispersive X-ray spectral analysis, and their oxidation states were analyzed by X-ray photoelectron spectroscopy. Furthermore, the antibacterial action of NiO and La-doped NiO nanoparticles was studied by the zone of inhibition method for Gram-negative and Gram-positive bacterial strains such as Escherichia coli and Bacillus sublitis. It was evident from the obtained results that the optimized compound NiOLa-04 performed better than the other prepared compounds. To the best of our knowledge, this is the first report on the phytosynthetic fabrication of rare-earth ion Lanthanum (La3+)-doped Nickel Oxide (NiO) nanoparticles and their anti-microbial studies.

Nanorods of Cobalt Oxide: Study on its Morphology with Varied Sonication Time

2013 ◽  
Vol 678 ◽  
pp. 203-206
Author(s):  
A. Alex John Thangapaul ◽  
V. Sherly Arpuda Kiruba ◽  
R. Nivea ◽  
T. Viji ◽  
K. Thiyagarajan ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Materials Science ◽  
Metal Oxide Nanoparticles ◽  
Thermo Gravimetric Analysis ◽  
Cost Effective ◽  
Oxide Nanoparticles ◽  
Gravimetric Analysis ◽  
Sonication Time ◽  
Cobalt Oxide Nanoparticles ◽  
Weight Percentage

Nanomaterials research has become a major attraction in the field of advanced materials research in the area of Physics, Chemistry, and Materials Science. Biocompatible and chemically stable magnetic metal oxide nanoparticles have biomedical applications that includes drug delivery, cell and DNA separation, gene cloning, magnetic resonance imaging (MRI). This research is aimed at the fabrication of magnetic cobalt oxide nanoparticles using a safe, cost effective, and easy to handle technique that is capable of producing nanoparticles free of any contamination. Nanostructured Cobalt oxide powder was prepared by sonication method using ultrasonicator. Effect of sonication for different time intervals, on the morphology of cobalt oxide nanostructures was extensively studied. The morphology of the nanorods were very much affected by the sonication time, it was found that with an increase in sonication time, the length of the nanorods seem to considerably increase at the same time an agglomeration effect comes in to action and the rods form bundle like structures. These cobalt oxide nanorods were characterized using X-ray Diffraction characterization (XRD) and it revealed a cubic structure. Weight percentage of cobalt oxide was confirmed by thermo gravimetric analysis (TGA).

Silver mirror reaction metallized chromatography paper for supercapacitor application

2021 ◽  
Author(s):  
I-Hsuan Chen ◽  
Jung-Hsien Chang ◽  
Ren-Jie Xie ◽  
Chia-Hui Tseng ◽  
Sheng-Rong Hsieh ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
Photoelectron Spectroscopy ◽  
Cost Effective ◽  
Water Contact ◽  
X Ray ◽  
Supercapacitor Application ◽  
Resource Limited ◽  
Vis Spectroscopy ◽  
Silver Mirror ◽  
Silver Mirror Reaction

Abstract In this study, the easy-to-operate silver mirror reaction (SMR) was used for metallizing chromatography paper. The SMR-metallized paper was characterized by water contact angle measurements, a surface profiler, X-ray photoelectron spectroscopy, UV-vis spectroscopy, X-ray diffraction, and electrical resistance measurement. The characterization results show that Ag was successfully synthesized on cellulose fibers and was electrically conductive after cyclic bending. Moreover, this SMR-metallized paper was used as electrodes for fabricating a supercapacitor. This SMR-metallized paper could be used for realizing cost-effective flexible electronics applied in on-site biochemical sensing in resource-limited settings.

scholarly journals Impact of Nanosized CuO Insertion on Structural and Mechanical Properties of PVA: HPMC Based Polymer Blend Nanocomposites

2021 ◽  
Vol 33 (10) ◽  
pp. 2287-2292
Author(s):  
K. Vijayashree ◽  
K. Sheshappa Rai
Keyword(s):  
Mechanical Properties ◽  
Metal Oxide Nanoparticles ◽  
Hydroxypropyl Methylcellulose ◽  
Cuo Nanoparticles ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Uv Visible ◽  
Blend Nanocomposites ◽  
Scanning Electron

Insertion of metal-oxide nanoparticles to polymers stipulate the modification of physical properties of polymers over and above the accomplishment of new features in the polymer matrix. In the current study, an attempt was made to disperse the CuO nanoparticles in the polyvinyl alcohol and hydroxypropyl methylcellulose (HPMC) blend to investigate the structural, mechanical and optical properties of the nanocomposite. Blend was prepared in different ratios using PVA and HPMC, viz. 25:50, 50:50 and 75:25 wt%. The CuO nanoparticles were added to the 75:25 PVA:HPMC blend in different percentage like 0.5,1 and 1.5%. The polymer with and without CuO incorporation were subjected to X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, UV-visible spectral analyses and mechanical strength, etc. The results revealed that the incorporation of the CuO nanoparticles enhanced the structural and mechanical properties of the polymer by forming successful nanocomposite.

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