scholarly journals Green Synthesis and Characterizations of Zinc Oxide (ZnO) Nanoparticles Using Aqueous Leaf Extracts of Coffee (Coffea arabica) and Its Application in Environmental Toxicity Reduction

2021 ◽  
Vol 2021 ◽  
pp. 1-6 ◽  
Author(s):  
Saka Abel ◽  
Jule Leta Tesfaye ◽  
R. Shanmugam ◽  
L. Priyanka Dwarampudi ◽  
Gudeta Lamessa ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Green Synthesis ◽  
Visible Region ◽  
Band Gap Energy ◽  
Sem Analysis ◽  
Zno Nps ◽  
Leaf Extracts ◽  
Toxicity Reduction ◽  
Medicinal Value ◽  
Uv Visible

A green deposition method of zinc oxide nanoparticles using coffee leaf extraction was successfully prepared. The use of these preparation techniques is accepted by many researchers because it is nonexpensive and simple and has no environmental impact during the operation. The determination and reduction of Zn ions to ZnO NPs were characterized by using a UV-visible spectroscope. The UV-visible spectroscopy result reveals that the large band gap energy is observed in the visible region at the wavelength of 300 nm. X-ray diffraction and SEM analysis confirm that the deposited nanoparticle is highly crystalline with (111), (222), and (100) planes and cubic shape structure. The coffee leaf extraction serves as a reducing agent for stability of the particle length, where its medicinal value outcome showed an important antibacteria of the pathogenic type which appeared on the wound. The present research deals with the green synthesis of ZnO NPs as well as its application in toxicity reduction.

Eco-Friendly Green Synthesis of MgO Nanoparticles from Zingiber Officinale(Ginger) Root Extract and its Antibacterial Application

2021 ◽  
Vol 9 (VI) ◽  
pp. 4219-4222
Author(s):  
R. D. More
Keyword(s):  
Green Synthesis ◽  
Pathogenic Bacteria ◽  
Visible Region ◽  
Cost Effective ◽  
Zingiber Officinale ◽  
Band Gap Energy ◽  
Root Extract ◽  
Mgo Nanoparticles ◽  
Medicinal Value ◽  
Uv Visible

In this study preparation of MgO nanoparticles using Zingiber officinale (ginger) aqueous root extract by using green method. The green synthesis approaches are recognized by many scientists due to its cost effective, simple, eco-friendly. The stability and reduction of Mg+2 ions to MgO nanoparticles were characterized by UV-Visible spectroscopic analysis. From UV-Visible spectroscopy, higher band gap energy of 7.8 eV is obtained in the near visible region at the wavelength of 300 nm. The Zingiber officinale (ginger) root extract act as reducing agent for stabilization of particle size as well as medicinal value result showed a significant antibacterial activity against pathogenic bacteria, E.Coli.and S.aureus. The present investigation deals with the green synthesis of MgO nanoparticles and its antibacterial effect on selected bacteria.

scholarly journals Green Synthesis, Characterization & Antibacterial Studies of Silver (Ag) and Zinc Oxide (Zno) Nanoparticles

2020 ◽  
Vol 14 (3) ◽  
pp. 1999-2008
Author(s):  
H. Syed Jahangir ◽  
T. Tamil Kumar ◽  
M. Mary Concelia ◽  
R. Alamelu
Keyword(s):  
Zinc Oxide ◽  
Metal Oxide ◽  
Green Synthesis ◽  
Zno Nanoparticles ◽  
Size Structure ◽  
Metal Oxide Nanoparticles ◽  
Chemical Properties ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Leaf Extracts

Green synthesis nanoparticles were considered as an alternative effective resource instead of chemically engineered metal oxide nanoparticles. Using leaf extracts for green synthesis, essential for the reduction and oxidation process of the metals. Phyllanthus niruri (L.) and Aristolochia indica (L.) leaf extracts were used to synthesize yellowish brown coloured silver (Ag) and white coloured zinc oxide (ZnO) nanoparticles. Synthesized green nanoparticles characterized by different spectroscopic analysis (XRD, XPS, FTIR, PL) and TEM. Characterization results confirmed the particles morphology, size, structure and also their optical and photonic properties. Three different concentrations of Ag and ZnO NPs were analysed against three (gram positive) and five (gram negative) bacteria. Increased levels of green synthesized Ag and ZnO NPs showed increased zone of inhibition than amoxicillin (positive control). Our study proved that the green synthesized Ag and ZnO NPs showed similar unique physical and chemical properties with metal oxide nanoparticles but less toxic while their discharge into the ecosystem.

scholarly journals Mechanisms and effects of zinc oxide nanoparticle transformations on toxicity to zebrafish embryos

2021 ◽  
Author(s):  
Gyudong Lee ◽  
Byongcheun Lee ◽  
Ki-Tae Kim
Keyword(s):  
Zinc Oxide ◽  
Physicochemical Properties ◽  
Zebrafish Embryos ◽  
Zinc Ions ◽  
Zno Nps ◽  
Zinc Oxide Nanoparticle ◽  
Toxicity Reduction ◽  
Oxide Nanoparticle

Environmental transformations modify the physicochemical properties of ZnO NPs, modulate their ability to reduce zinc ions, and determine the degree of toxicity reduction in zebrafish embryos.

scholarly journals Scolicidal activity of biosynthesized zinc oxide nanoparticles by Mentha longifolia L. leaves against Echinococcus granulosus protoscolices

2021 ◽  
Author(s):  
Bushra H. Shnawa ◽  
Samir M. Hamad ◽  
Azeez A. Barzinjy ◽  
Payman A. Kareem ◽  
Mukhtar H. Ahmed
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Public Health Problem ◽  
Analytical Techniques ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Leaf Extracts ◽  
X Ray ◽  
Morphological Alterations ◽  
Mentha Longifolia

AbstractCystic echinococcosis is a public health problem in developing countries that practice sheep breeding extensively. In the current study, the protoscolicidal activity of biosynthesized zinc oxide nanoparticles (ZnO NPs) derived from Mentha longifolia L. leaf extracts was investigated. The resultant ZnO NPs were characterized by means of various analytical techniques, such as ultraviolet–visible (UV–Vis) spectrometry, Fourier transform infrared (FT-IR) spectrophotometry, X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX) analysis. The results showed that the ZnO NP had the highest scolicidal activity at 400 ppm concentration after 150 min of exposure time, showing 100% mortality rate. The treated protoscolices exhibited loss of viability with several morphological alterations. Hence, an easy and effective green synthesis of ZnO NPs, with efficient scolicidal potential, is reported in this study.

Green synthesis and antimicrobial activity of ZnO nanostructures Punica granatum shell extract

2017 ◽  
Vol 6 (3) ◽  
Author(s):  
Ercan Karaköse ◽  
Hakan Çolak ◽  
Fatih Duman
Keyword(s):  
Antimicrobial Activity ◽  
Zinc Oxide ◽  
Green Synthesis ◽  
Aqueous Extract ◽  
New Technologies ◽  
Punica Granatum ◽  
Zno Nanostructures ◽  
Zno Nps ◽  
Potential Applications ◽  
Environmentally Safe

AbstractThe manufacture of nanoparticles (NPs) is a new area of investigation due to potential applications related to the improvement of new technologies; in particular, environmentally safe manufactured nanomaterials have become a growing area within nanoscience. In this research, we synthesized zinc oxide (ZnO)-NPs using an aqueous extract of

scholarly journals Plant Mediated Green Synthesis of Zinc Oxide Nanoparticles for Burn Wound Therapy

2020 ◽  
Author(s):  
Mohd Riyaz Beg ◽  
Shital Ghodinde ◽  
Vidhi Gupta
Keyword(s):  
Antimicrobial Activity ◽  
Wound Healing ◽  
Zinc Oxide ◽  
Green Synthesis ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Burn Wound ◽  
Zno Nps ◽  
Burn Wounds ◽  
Burn Wound Healing

In this changing world, we all are surrounded by the surmountable risk of getting injured. Amongst various risk factors, major burns are the most distressing and catastrophic. Burn wounds are not easy to heal via natural healing process and ultimately ended up with scar formation. If the degree of burn is high then the loss of tissue and its function is very common. To fasten-up the natural burn wound healing; zinc, an essential trace element is found to be very much effective. But due to its’ particle size limitation, less contact with wounded cells and tissues, and high inherent toxicity restrict its use. Needlessly, zinc is an element with dual action i.e. both antimicrobial and wound healing it is a prime choice to apply its aptitude in burn wound healing. To overcome the documented limitations zinc has converted to nanoparticle form. Zinc oxide nanoparticles, in particular, have attained ample of interest due to their unique properties and potential antimicrobial activity along with wound healing activity which makes it promising for the healing of topical burn wounds. Plant mediated green synthesis of nano-metal oxide particles is gaining a lot of significance due to its simplicity, eco-friendliness and extensive antimicrobial activity and recommended as an appealing substitute to not only physical methods but also chemical methods avoiding the use of the high rate of toxic chemicals and extreme surroundings. This study includes ZnO NPs role in burn wound healing with Phyto-mediated synthesis methods to provide evidence of their potential applications. Additionally, it provides an overview of traditional methods used for the synthesis of ZnO nanoparticles and characterization techniques to obtain information concerning the size, shape and optical properties along with toxicity and safety concern of ZnO NPs and its biomedical applications.

SYNTHESIS AND CHARACTERIZATION OF NEEM-BASED ZINC OXIDE PHOTOCATALYST

2021 ◽  
Vol 36 (1) ◽  
pp. 9-15
Author(s):  
I.N Gana ◽  
V.U Ohageria ◽  
U.G Akpan ◽  
I.J Ani
Keyword(s):  
Zinc Oxide ◽  
Green Synthesis ◽  
Surface Area ◽  
Leaf Extract ◽  
Zinc Acetate Dihydrate ◽  
Sol Gel ◽  
Sem Analysis ◽  
X Ray ◽  
Bet Analysis ◽  
Neem Leaf Extract

The use of chemicals for the synthesis of photocatalyts poses threat to the environment. In this study, an active photocatalyst, Dalbejiya Dongoyaro (Azadirachta indica)-based zinc oxide (ZnO) was biosynthesized from zinc acetate dihydrate using sol gel and precipitation methods. The synthesized samples were characterized using Fourier Transfer InfraRed (FTIR), X-Ray Diffractometry (XRD), Brunauer Emmet Teller (BET), Energy Dispersive X-ray Spectroscopy (EDS) and Scanning Electron Microscopy (SEM) characterization techniques. The XRD and SEM analysis of the green synthesized and non-green synthesized ZnO demonstrated the formation of hexagonal wurtzite crystalline structure and agglomerated morphology. EDX analysis demonstrated the existence of Zn and O as the major constituents of the as-synthesized nanoparticles with traces of carbon which could be attributed to the carbon tape of the sample holder. The BET analysis displayed that the surface area of the ZnO nanoparticles increased from 23.75 to 97.08 cm3/g after the green synthesis. Based on the surface area values, it can be derived that neem leaf extract enhanced the surface area of the green synthesized sample. Green synthesis is a promising route for the synthesis of photocatalyst nanoparticle which is environmentally friendly and sustainable method. Keywords: Zinc oxide, Neem leaf extract, Photocatalyt, Degradation, Bio-synthesis

Facile green synthesis of zinc oxide nanoparticles (ZnO NPs): antibacterial and photocatalytic activities

2019 ◽  
Vol 6 (10) ◽  
pp. 1050b4 ◽  
Author(s):  
H Chemingui ◽  
T Missaoui ◽  
J Chékir Mzali ◽  
T Yildiz ◽  
M Konyar ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Green Synthesis ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Photocatalytic Activities
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