scholarly journals Synthesis, Characterization, Modeling and Anti-Bacterial Properties of Peanut-Shaped ZnO Nano-Bunches

Nano Hybrids ◽  
2013 ◽  
Vol 4 ◽  
pp. 61-85
Author(s):  
Mohd Farhan Khan ◽  
Akhter H. Ansari ◽  
M. Hameedullah ◽  
M.B. Lohani ◽  
Mohammad Mezbaul Alam ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Zinc Acetate Dihydrate ◽  
Metal Oxide Nanoparticles ◽  
Effect Of Temperature ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Vis Spectroscopy ◽  
Molar Solution ◽  
Relationship Of ◽  
The Impact

Since few decades, the fabrications of metal oxide nanoparticles (MO-Nps) as well as their uses in various segments have been increased manifolds. An easy effort to produce an important category of MO-Nps as Zinc oxide nanoparticles (ZnO-Nps), with the assistance of mechano-solution method at various low temperatures, introducing Zinc acetate dihydrate and Sodium hydroxide into the molar solution of C19H42NBr complex (Cetrimonium bromide, CTAB) for much less than an hour was projected. The impact of this method performed at two different ranges of process temperatures was studied and the magnitude of the ZnO-Nps (like particle size, morphology and L/D dimensions) has been reported. On the top of this, the morphological study of these Nps has been presented. The characterization of the synthesized Nps was carried out with the help of SEM with EDS, XRD, UV-Vis spectroscopy. The scanning electron microscopy has revealed the synthesis of peanut-shaped ZnO nanobunches (NBs) at two different ranges of temperature. An overall viable growth of the solitary nanoparticles constituting of ZnO-NBs has also been put forth. Hence, the effect of temperature on C19H42NBr complex (stabilizer) has been reported. In addition, a postulated model depicting the relationship of the temperature effect on the process parameters of ZnO-NBs has also been floated. The Gram +ve bacteria, Bacillus subtilis is a rod shaped bacteria which is commonly known as normal gut commensal in humans. Due to the emergence of anti-biotic resistant drugs, alternate medications are under primary considerations. A noteworthy experimentation was concerned with anti-bacterial activity of therapeutically viable Gram +ve bacteria, Bacillus subtilis and it was found that reported ZnO-NBs have become the promising entities for terminating the growth of these bacterias.

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 Effect of nanoparticles concentration on electromagnetic-assisted oil recovery using ZnO nanofluids

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0244738
Author(s):  
Muhammad Adil ◽  
Keanchuan Lee ◽  
Hasnah Mohd Zaid ◽  
M. Fadhllullah A. Shukur ◽  
Takaaki Manaka
Keyword(s):  
Oil Recovery ◽  
Metal Oxide Nanoparticles ◽  
Mobility Ratio ◽  
Oxide Nanoparticles ◽  
Surfactant Flooding ◽  
Zno Nps ◽  
Recovery Mechanism ◽  
Em Field ◽  
Zno Nanofluids ◽  
The Impact

Utilization of metal-oxide nanoparticles (NPs) in enhanced oil recovery (EOR) has generated substantial recent research interest in this area. Among these NPs, zinc oxide nanoparticles (ZnO-NPs) have demonstrated promising results in improving oil recovery due to their prominent thermal properties. These nanoparticles can also be polarized by electromagnetic (EM) field, which offers a unique Nano-EOR approach called EM-assisted Nano-EOR. However, the impact of NPs concentrations on oil recovery mechanism under EM field has not been well established. For this purpose, ZnO nanofluids (ZnO-NFs) of two different particle sizes (55.7 and 117.1 nm) were formed by dispersing NPs between 0.01 wt.% to 0.1 wt.% in a basefluid of sodium dodecylbenzenesulfonate (SDBS) and NaCl to study their effect on oil recovery mechanism under the electromagnetic field. This mechanism involved parameters, including mobility ratio, interfacial tension (IFT) and wettability. The displacement tests were conducted in water-wet sandpacks at 95˚C, by employing crude oil from Tapis. Three tertiary recovery scenarios have been performed, including (i) SDBS surfactant flooding as a reference, (ii) ZnO-NFs flooding, and (iii) EM-assisted ZnO-NFs flooding. Compare with incremental oil recovery from surfactant flooding (2.1% original oil in place/OOIP), nanofluid flooding reaches up to 10.2% of OOIP at optimal 0.1 wt.% ZnO (55.7 nm). Meanwhile, EM-assisted nanofluid flooding at 0.1 wt.% ZnO provides a maximum oil recovery of 10.39% and 13.08% of OOIP under EM frequency of 18.8 and 167 MHz, respectively. By assessing the IFT/contact angle and mobility ratio, the optimal NPs concentration to achieve a favorable ER effect and interfacial disturbance is determined, correlated to smaller hydrodynamic-sized nanoparticles that cause strong electrostatic repulsion between particles.

scholarly journals Green Synthesis of Zinc Oxide Nanoparticles: Fortification for Rice Grain Yield and Nutrients Uptake Enhancement

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 584
Author(s):  
Omnia M. Elshayb ◽  
Khaled Y. Farroh ◽  
Heba E. Amin ◽  
Ayman M. Atta
Keyword(s):  
Zinc Oxide ◽  
Grain Yield ◽  
Field Experiments ◽  
Metal Oxide Nanoparticles ◽  
Foliar Spray ◽  
Yield Component ◽  
Oxide Nanoparticles ◽  
Rice Grain ◽  
Zno Nps ◽  
Agriculture Sector

Applications of metal oxide nanoparticles in the agriculture sector are being extensively included as the materials are considered superior. In the present work, zinc oxide nanoparticle (ZnO NPs), with a developing fertilizer, is applied in the fortification of rice grain yield and nutrient uptake enhancement. To evaluate the role of ZnO NP, two field experiments were conducted during the 2018 and 2019 seasons. ZnO NPs were small, nearly spherical, and their sizes equal to 31.4 nm, as proved via the dynamic light scattering technique. ZnO NPs were applied as a fertilizer in different concentrations, varying between 20 and 60 mg/L as a foliar spray. The mixture of ZnSO4 and ZnO NP40 ameliorated yield component and nutrients (N, K, and Zn) uptake was enhanced compared to traditional ZnSO4 treatment. Nevertheless, the uptake of the phosphorous element (P) was adversely affected by the treatment of ZnO NPs. Thus, treatment via utilizing ZnO NPs as a foliar with a very small amount (40 ppm) with of basal ZnSO4 led to a good improvement in agronomic and physiological features; eventually, higher yield and nutrient-enriched rice grain were obtained.

scholarly journals The Impact of Zinc Oxide Nanoparticles on Male (In)Fertility

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 849 ◽  
Author(s):  
Ana Rita Pinho ◽  
Sandra Rebelo ◽  
Maria de Lourdes Pereira
Keyword(s):  
Zinc Oxide ◽  
Reproductive System ◽  
Male Fertility ◽  
Zinc Oxide Nanoparticles ◽  
Engineered Nanoparticles ◽  
Male Reproductive System ◽  
Oxide Nanoparticles ◽  
Exceptional Set ◽  
Zno Nps ◽  
The Impact

Zinc oxide nanoparticles (ZnO NPs) are among nanoscale materials, attracting increasing attention owing to their exceptional set of characteristics, which makes these engineered nanoparticles a great option for improving the quality and effectiveness of diagnosis and treatment. The capacity of ZnO NPs to induce reactive oxygen species (ROS) production, DNA damage, and apoptosis represents a promise for their use in both cancer therapy and microbial treatment. However, their intrinsic toxicity together with their easy entrance and accumulation in organism have raised some concerns regarding the biomedical use of these NPs. Several studies have reported that ZnO NPs might induce cytotoxic effects on the male reproductive system, compromising male fertility. Despite some advances in this area, the knowledge of the effects of ZnO NPs on male fertility is still scarce. Overall, a brief outline of the major ZnO NPs biomedical applications and promises in terms of diagnostic and therapeutic use will also be explored. Further, this review intends to discuss the effect of ZnO NPs exposure on the male reproductive system and speculate their effects on male (in)fertility.

scholarly journals Averrhoa carambola: A Renewable Source of Oxalic Acid for the Facile and Green Synthesis of Divalent Metal (Fe, Co, Ni, Zn, and Cu) Oxalates and Oxide Nanoparticles

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Nguimezong Nguefack Marius Borel ◽  
Josepha Foba-Tendo ◽  
Divine Mbom Yufanyi ◽  
Ekane Peter Etape ◽  
Jude Namanga Eko ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Metal Oxide Nanoparticles ◽  
Environmentally Benign ◽  
Effect Of Temperature ◽  
Special Treatment ◽  
Oxide Nanoparticles ◽  
Synthetic Approach ◽  
X Ray Diffraction ◽  
Decomposition Products ◽  
Averrhoa Carambola

A green, simple, and environmentally benign synthetic approach has been utilised to obtain some bivalent metal oxalates from Averrhoa carambola juice extract, without any purification or special treatment of the juice. The main acid components (oxalic acid and ascorbic acid) of the juice were identified by HPLC technique. The effect of temperature on the purity of the product has been investigated. The as-synthesized metal oxalates were thermally decomposed at low temperatures to their respective metal oxide nanoparticles. The metal oxalates and their respective thermal decomposition products were characterized by Fourier Transform Infrared spectroscopy, X-ray diffraction analysis, and thermogravimetry.

scholarly journals Green Synthesis of Zinc Oxide Nanoparticles via Algal Route and its Action on Cancerous Cells and Pathogenic Microbes

2020 ◽  
Vol 3 (1) ◽  
pp. 15-27
Author(s):  
Priyankari Bhattacharya ◽  
Kasturi Chatterjee ◽  
Snehasikta Swarnakar ◽  
Sathi Banerjee
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Metal Oxide Nanoparticles ◽  
Melanoma Cells ◽  
Oxide Nanoparticles ◽  
Cellular Viability ◽  
Zno Nps ◽  
B16f10 Cells ◽  
Melanoma B16f10 ◽  
Minimal Damage

Application of metal oxide nanoparticles for treatment of melanoma cells and microbes is being investigated. Zinc oxide nanoparticles (ZnO NPs) deserve special mention where particles cause destruction of melanoma cells with minimal damage to healthy cells. In the present study, pure phase ZnO NPs with particle size of 3.1 nm were synthesized by green route using algal extract. Skin melanoma (B16F10) cells were treated with synthesized ZnO NP and compared with commercial ZnO NPs and analysed for ED50 for cellular viability using 3% (w/v) of the doses. Sensitivity of B16F10 cells towards green synthesized ZnO NP was found to be more than commercial ZnO NPs. Results showed greater reduction in viability of cells exposed to green synthesized ZnO NPs and with increasing dose of the ZnO NPs, percentage viability of cells gradually reduced. 50% decrease in cellular viability (ED50) was obtained for green synthesized ZnO NP at 3% dose while commercial ZnO exhibited ED50 at 6% of doses. The ZnO NP also showed antimicrobial activity against Pseudomonas sp. and Staphylococcus sp. Zone of inhibition (ZOI) exhibited by Pseudomonas aeruginosa and Staphylococcus aureus for disc diffusion and well diffusion assay was around 10-22 mm and 9-12mm respectively.

Sunflower Assisted Bio-derived ZnO-NPs as an Efficient Nanocatalyst for Synthesis of Novel Quinazolines with Highly Antioxidant Activities

2021 ◽  
Author(s):  
Balaji GL ◽  
S. Mahesh ◽  
Boya Palajonnala Narasaiah ◽  
Sadegh Rostamnia ◽  
Harihara Padhy ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Antioxidant Activities ◽  
Present Report ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Green Method ◽  
Vis Spectroscopy

Abstract The present report an environmental benign route for the fabrication of Zinc Oxide nanoparticles (ZnO-NPs) using sunflower leaf aqueous extract at room temperature. This was an green method is a rapid biogenic and offers few advantages over the chemical and physical procedures, as it is an easy and fast, eco-friendly and does not involve any costly chemicals as well as hazardous chemicals, harmful solvent. The synthesized ZnO-NPs were characterized using different technique such as UV-Visible spectroscopy. The formation of ZnO-NPs was confirmed by Surface Plasmon Resonance (SRP) at 344 nm using UV-Vis spectroscopy. The leaf extract act as a source of phyto-chemicals and are the primarily responsible for the reduction and then formation of stable Zinc Oxide nanoparticles by the characteristic functional groups of extract and synthesized ZnO-NPs were identified by FTIR spectroscopy. Crystalline nature of ZnO-NPs was confirmed by powder –XRD. Size and morphology were measured by HR-TEM analysis. Stability of the nanoparticles is represented by DLS and TGA analysis. The synthesized ZnO-NPs has been found good and efficient catalyst for the synthesis of novel 1,2-dihydroquinazoline derivatives under green method via one pot reaction of 2-amino benzophenone, 1,3-diphenyl-1 H -pyrazole carbaldehydes and ammonium acetate. The synthesized compounds (4a-o) were characterized by 1 HNMR, 13 CNMR and HRMS spectra and further screened for radical scavenging activity. Among all the compounds showed good percentage of inhibition against standard ascorbic acid. The synthesized ZnO nanoparticles showed good antioxidant activity and also act as a good promising material for catalytic agent.

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