Precursor Concentration Effect on Physicochemical Properties of Zinc Oxide Nanoparticle Synthesized with Banana Peel Extract

2019 ◽  
Vol 797 ◽  
pp. 262-270 ◽  
Author(s):  
R.A. Abdol Aziz ◽  
Siti Fatma Abd Karim ◽  
Ummi Kalthum Ibrahim ◽  
N Sanuddin
Keyword(s):  
Zinc Oxide ◽  
Food Packaging ◽  
Cost Effective ◽  
Xrd Analysis ◽  
Band Gap Energy ◽  
Banana Peel ◽  
Zno Nps ◽  
Constant Ph ◽  
Oxide Nanoparticle ◽  
Musa Species

The present study reports the synthesis of zinc oxide (ZnO) nanoparticles (NPs) using Jackfruit banana peel (Musa Species.) extracts (BPE) as reducing and stabilizing agent. This green synthesis is considered promising an alternative technique that cost effective, nontoxic and environmental friendly. Zinc acetate dehydrate solution ((CH3COO)2.2H2O) was used as the precursor for ZnO synthesis and the concentration was varied in the range of 0.100 M – 0.010 M at constant pH of solutions, 12. The synthesized ZnO NPs were then characterized using fourier transform infrared spectroscopy (FTIR), ultraviolet visible (UV-Vis) absorption spectroscopy, x-ray Diffractometer and Brunauer-Emmett-Teller (BET). The band gap energy was found in the range of 3.44 eV - 3.58 eV while XRD analysis shows a crystalline structure in hexagonal wurtzite shape. These unique characteristics open the possibilities of various potential application in medical and industry as well as for development of antimicrobial agent for food packaging applications.

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 Zinc oxide nanoparticles using plant Lawsonia inermis and their mosquitocidal, antimicrobial, anticancer applications showing moderate side effects

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Pandiyan Amuthavalli ◽  
Jiang-Shiou Hwang ◽  
Hans-Uwe Dahms ◽  
Lan Wang ◽  
Jagannathan Anitha ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Mosquito Control ◽  
Xrd Analysis ◽  
Microbial Pathogens ◽  
Oxide Nanoparticles ◽  
Lawsonia Inermis ◽  
Zno Nps ◽  
Vector Borne Diseases ◽  
Substantial Problem

AbstractMicrobes or parasites spread vector-borne diseases by mosquitoes without being affected themselves. Insecticides used in vector control produce a substantial problem for human health. This study synthesized zinc oxide nanoparticles (ZnO NPs) using Lawsonia inermis L. and were characterized by UV–vis, FT-IR, SEM with EDX, and XRD analysis. Green synthesized ZnO NPs were highly toxic against Anopheles stephensi, whose lethal concentrations values ranged from 5.494 ppm (I instar), 6.801 ppm (II instar), 9.336 ppm (III instar), 10.736 ppm (IV instar), and 12.710 ppm (pupae) in contrast to L. inermis treatment. The predation efficiency of the teleost fish Gambusia affinis and the copepod Mesocyclops aspericornis against A. stephensi was not affected by exposure at sublethal doses of ZnO NPs. The predatory potency for G. affinis was 45 (I) and 25.83% (IV), copepod M. aspericornis was 40.66 (I) and 10.8% (IV) while in an ZnO NPs contaminated environment, the predation by the fish G. affinis was boosted to 71.33 and 34.25%, and predation of the copepod M. aspericornis was 60.35 and 16.75%, respectively. ZnO NPs inhibited the growth of several microbial pathogens including the bacteria (Escherichia coli and Bacillus subtilis) and the fungi (Alternaria alternate and Aspergillus flavus), respectively. ZnO NPs decreased the cell viability of Hep-G2 with IC50 value of 21.63 µg/mL (R2 = 0.942; P < 0.001) while the concentration increased from 1.88 to 30 µg/mL. These outcomes support the use of L. inermis mediated ZnO NPs for mosquito control and drug development.

Morphological, Structural, Electrical and Optical Properties of Copper-Doped Zinc Oxide Films Deposited by Spray Pyrolysis

2018 ◽  
Vol 930 ◽  
pp. 79-84
Author(s):  
Juliana Simões Chagas Licurgo ◽  
Herval Ramos Paes Junior
Keyword(s):  
Zinc Oxide ◽  
Spray Pyrolysis ◽  
Oxide Films ◽  
Electrical Characterization ◽  
Xrd Analysis ◽  
Band Gap Energy ◽  
Hexagonal Structure ◽  
Material Behavior ◽  
Glass Substrates ◽  
Zinc Oxide Films

In this work, copper-doped zinc oxide films (ZnO:Cu) were deposited by spray pyrolysis on glass substrates. The influence of doping concentration (0-10 at.%) on morphological, structural, optical and electrical properties of the ZnO:Cu films was investigated. Electrical characterization consisted in measuring the variation of electrical conductivity with temperature; they presented a typical semiconductor material behavior. Based on x-ray diffraction (XRD) analysis, it was able to confirm that the films are polycrystalline having a wurtzite hexagonal structure, preferentially oriented in the c-axis (002), and the crystallite size ranged from 41.60 to 50.70 nm. The optical characterization revealed that ZnO:Cu films present band gap energy between 3.18 and 3.27 eV. The films were homogeneous with good adhesion to the substrate. The results indicate the viability of using them in optoelectronic devices.

scholarly journals Erratum: Scherzad, A., et al. Molecular Mechanisms of Zinc Oxide Nanoparticle-Induced Genotoxicity Short Running Title: Genotoxicity of ZnO NPs. Materials 2017, 10, 1427

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5462
Author(s):  
Agmal Scherzad ◽  
Till Meyer ◽  
Norbert Kleinsasser ◽  
Stephan Hackenberg
Keyword(s):  
Zinc Oxide ◽  
Molecular Mechanisms ◽  
Zno Nps ◽  
Zinc Oxide Nanoparticle ◽  
Oxide Nanoparticle

There is an error in the title [...]

Toxicity of zinc oxide nanoparticles to the annelid Enchytraeus crypticus in agar-based exposure media

2016 ◽  
Vol 70 (11) ◽  
Author(s):  
Kateřina Hrdá ◽  
Jakub Opršal ◽  
Petr Knotek ◽  
Miloslav Pouzar ◽  
Milan Vlček
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Water Soluble ◽  
Soluble Salt ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Zinc Oxide Nanoparticle ◽  
Enchytraeus Crypticus ◽  
Oxide Nanoparticle

AbstractToxicity of zinc oxide nanoparticle (ZnO-NPs) powder and water soluble salt of Zn (ZnCl

scholarly journals Large Scale Synthesis of Green Synthesized Zinc Oxide Nanoparticles from Banana Peel Extracts and Their Inhibitory Effects against Colletotrichum sp., Isolate KUFC 021, Causal Agent of Anthracnose on Dendrobium Orchid

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Nattanan Panjaworayan T-Thienprasert ◽  
Jiraroj T-Thienprasert ◽  
Jittiporn Ruangtong ◽  
Thitiradsadakorn Jaithon ◽  
Pattana Srifah Huehne ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Large Scale ◽  
Average Diameter ◽  
Banana Peel ◽  
Oxide Nanoparticles ◽  
Inhibitory Effects ◽  
Zno Nps ◽  
Nontarget Organisms ◽  
High Doses

Fungicides have been extensively used to control fungal diseases that affect several crops including ornamental crops. However, concerns have arisen due to a development of fungicide resistance and increasing incidences of fungicide toxicity effects on nontarget organisms. As zinc oxide nanoparticles (ZnO NPs) have demonstrated effective antimicrobial activity, this study is therefore aimed at synthesizing ZnO NPs from banana peels using a green chemistry method in a large scale and determines their physical properties including their inhibitory effects against a plant pathogen fungus causing anthracnose in orchids, Colletotrichum sp. Results from X-ray diffraction and scanning electron microscope indicated that the synthesized ZnO NPs were obtained without other crystalline impurities, and they were spherical in shape with the average diameter of 256 ± 40   nm , respectively. The absorption peak was found to be centered at ~370 nm with the optical band gap value approximately 2.8 eV. Fourier transform infrared spectroscopy analysis confirmed the presence of several functional groups on synthesized ZnO NPs. The total amount of synthesized ZnO NPs was obtained about 170 g for a synthesis reaction. By performing the antifungal activity assay, high doses of green synthesized ZnO NPs significantly inhibited growth of isolated Colletotrichum sp. (KUFC 021) on culture plates. Under greenhouse conditions, high doses of synthesized ZnO NPs also significantly reduced anthracnose symptoms on inoculated orchid leaves with the Colletotrichum sp. (KUFC 021).

Biosynthesis and Characterization of Zinc Oxide Nanoparticles for the Systemic Treatment of Patients with Lymphoma in Nursing Care

2020 ◽  
Vol 12 (1) ◽  
pp. 137-143
Author(s):  
Lingling Meng ◽  
Lina Du ◽  
Yaqiong Shen ◽  
Shan Cong ◽  
Qiuyan Zhai ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Zno Nanoparticles ◽  
Zinc Oxide Nanoparticles ◽  
Systemic Treatment ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Environment Friendly ◽  
Oxide Nanoparticle ◽  
T Lymphoma

Zinc oxide (ZnO) nanoparticles recently are of significant consideration because of their applications as nontoxic metal oxides. This study is mainly intended to improve a simple, efficient, and environment-friendly method for preparation of ZnO nanoparticles. This process has been developed based on plant-intervened synthesis by making use of microwave Saturejahortensis aqueous extract. We have further characterized the obtained Zinc oxide nanoparticles by using different techniques. Additionally, their cytotoxic potential was inspected via MTT assay against both B lymphoma, A20 and T lymphoma, EL4 cells lines. The zinc oxide nanoparticle exposed cells for about 24 h showed diminished cell viability in the tested cell lines where EL4 cells has been reduced to 75% of control after 24 h, whereas A20 cells were lowered to 68% of control. ZnO-NPs have proficiently hindered EL4 cell DNA synthesis at 100 μg concentration whereas completely blocked the DNA proliferation at about 50 g concentration. However, A20 cells besides presented similar propensity, thus exploring the ZnO-NPs potential to treat lymphomas.

scholarly journals Zinc Oxide Nanoparticle Synergizes Sorafenib Anticancer Efficacy with Minimizing Its Cytotoxicity

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Ahmed Nabil ◽  
Mohamed M. Elshemy ◽  
Medhat Asem ◽  
Marwa Abdel-Motaal ◽  
Heba F. Gomaa ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Side Effects ◽  
Combined Treatment ◽  
Reactive Oxygen Species Generation ◽  
Antitumor Efficacy ◽  
Ehrlich Carcinoma ◽  
Cancer Tissue ◽  
Zno Nps ◽  
Zinc Oxide Nanoparticle ◽  
Oxide Nanoparticle

Cancer, as a group, represents the most important cause of death worldwide. Unfortunately, the available therapeutic approaches of cancer including surgery, chemotherapy, radiotherapy, and immunotherapy are unsatisfactory and represent a great challenge as many patients have cancer recurrence and severe side effects. Methotrexate (MTX) is a well-established (antineoplastic or cytotoxic) chemotherapy and immunosuppressant drug used to treat different types of cancer, but its usage requires high doses causing severe side effects. Therefore, we need a novel drug with high antitumor efficacy in addition to safety. The aim of this study was the evaluation of the antitumor efficacy of zinc oxide nanoparticle (ZnO-NPs) and sorafenib alone or in combination on solid Ehrlich carcinoma (SEC) in mice. Sixty adult female Swiss-albino mice were divided equally into 6 groups as follows: control, SEC, MTX, ZnO-NPs, sorafenib, and ZnO-NPs+sorafenib; all treatments continued for 4 weeks. ZnO-NPs were characterized by TEM, zeta potential, and SEM mapping. Data showed that ZnO-NPs synergized with sorafenib as a combination therapy to execute more effective and safer anticancer activity compared to monotherapy as showed by a significant reduction (P<0.001) in tumor weight, tumor cell viability, and cancer tissue glutathione amount as well as by significant increase (P<0.001) in tumor growth inhibition rate, DNA fragmentation, reactive oxygen species generation, the release of cytochrome c, and expression of the apoptotic gene caspase-3 in the tumor tissues with minimal changes in the liver, renal, and hematological parameters. Therefore, we suggest that ZnO-NPs might be a safe candidate in combination with sorafenib as a more potent anticancer. The safety of this combined treatment may allow its use in clinical trials.

Selenium Zinc Oxide (Se/ZnO) Nanoparticles: Synthesis, Characterization, and Photocatalytic Activity

2019 ◽  
Vol 74 (12) ◽  
pp. 1043-1056 ◽  
Author(s):  
Kamal K. Taha ◽  
Musadag M. Mustafa ◽  
Hasabo A. Mohamed Ahmed ◽  
Sarra Talab
Keyword(s):  
Zinc Oxide ◽  
Band Gap ◽  
Zinc Acetate Dihydrate ◽  
Band Gap Energy ◽  
Blue Dye ◽  
Zno Nps ◽  
Visible Absorption ◽  
X Ray ◽  
Uv Illumination ◽  
Crystallite Sizes

AbstractA facile synthesis of undoped and 2.0 % selenium-doped zinc oxide nanoparticles (NPs) was efficaciously accomplished through a mechanochemical route using zinc acetate dihydrate, oxalic acid, and Se powder in a solid state reaction. After calcination at 450 °C, the obtained nanostructures were probed by X-ray diffraction, where the acquired data revealed the pertinence of the wurtzite hexagonal ZnO for both undoped (ZnO) and doped (Se/ZnO) NPs and crystallite sizes of 30 and 24 nm for ZnO and Se/ZnO, respectively. The formation of the target NPs was confirmed by the scanning and transmission electron microscopy, energy-dispersive X-ray analysis, and the Fourier transformation infrared molecular vibrations data. The porosity investigations indicated 33.65 m2/g Brunauer–Emmett–Teller surface area, 197 Å pore diameter, and 0.172 cm3/g pore volume for the Se/ZnO NPs compared to lower values for the pristine ZnO. The band gap energies were 3.19 and 3.15 eV for ZnO and Se/ZnO as perceived from the Tauc plots of the UV-visible absorption measurements. The photodegradation of methylene blue dye under UV illumination was found to follow the pseudo–first-order kinetics with an enhanced performance by the doped samples as reflected by the higher (3.2 × 10−3 s−1) rate constant relative to the undoped sample (1.7 × 10−3 s−1). A photodegradation mechanism was suggested in the light of the band gap energy investigation. The obtained findings indicate the improvement of ZnO properties by doping with Se through a simplistic and inexpensive approach.

scholarly journals Biodegradable Hybrid Nanocomposite of Chitosan/Gelatin and Green Synthesized Zinc Oxide Nanoparticles for Food Packaging

Foods ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1143 ◽  
Author(s):  
Santosh Kumar ◽  
Abhinab Mudai ◽  
Barnali Roy ◽  
Indra Bhusan Basumatary ◽  
Avik Mukherjee ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Zinc Oxide ◽  
Food Packaging ◽  
Fruits And Vegetables ◽  
Nanocomposite Films ◽  
Hybrid Nanocomposite ◽  
Hybrid Films ◽  
Zno Nps ◽  
Gram Positive Bacteria ◽  
Average Size

In the context of emerging global concerns with synthetic plastic packaging, alternative natural biodegradable packaging materials are gaining increasing attention for food packaging applications. In this study, chitosan and gelatin nanocomposite hybrid films containing green synthesized zinc oxide (ZnO) nanoparticles (NPs) were developed and microstructural properties were studied. Antimicrobial activity of the developed films was evaluated using both Gram negative (Escherichia coli) and Gram positive bacteria (Staphylococcus aureus). Green synthesis protocol was used for the precipitation of ZnO NPs using fruit extract of Cassia fistula. The as-synthesized polyhedral ZnO NPs were in the range of 20–40 nm (average size ≈29 nm). Reinforcement with ZnO NPs in the hybrid films lead to improved thermal stability, elongation-at-break (EAB), and compactness properties. The developed films with 2% and 4% ZnO NPs showed a smooth, compact, and heterogeneous surface morphology compared to the control (chitosan-gelatin hybrid) films. Disc diffusion assays showed that the nanocomposite film had significant antimicrobial activity against E. coli. The developed hybrid nanocomposite films have potential to be developed as biodegradable alternative for postharvest packaging of fresh fruits and vegetables.

Sign in / Sign up

Export Citation Format

Share Document