Influence of Various Concentrations of Cetyltrimethylammonium Bromide on the Properties of Nickel Oxide Nanoparticles for Supercapacitor Application

NANO ◽  
2021 ◽  
Author(s):  
M. Ramesh Aravind ◽  
C. Kalaiselvi ◽  
B. Revathi ◽  
A. Nirmala Grace ◽  
Sudhagar Pitchaimuthu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Nickel Oxide ◽  
Active Sites ◽  
Cetyltrimethylammonium Bromide ◽  
Oxide Nanoparticles ◽  
Average Particle ◽  
Nickel Oxide Nanoparticles ◽  
Crystallite Sizes ◽  
Nio Nps ◽  
The Impact

In this paper, the impact of the crystallite sizes of nickel oxide nanoparticles (NiO NPs) on their efficiency for electrochemical capacitors (EC) has been investigated. NiO NPs were prepared without and with low and high concentrations (0.02[Formula: see text]M and 0.1[Formula: see text]M) of cetyltrimethylammonium bromide (CTAB) using the hydrothermal process that represent NiO, NiO-1, NiO-2, respectively. The crystallite size of NiO, NiO-1, NiO-2 NPs was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) analysis. The thermogravimetry/differential thermal analysis (TG/DTA) was used to investigate the thermal observation of as-prepared precursor to transform as NiO NPs. HRTEM revealed spherical seed-like morphologies, which consist of aggregated NiO-1 NPs with an average particle size of 9[Formula: see text]nm. The NiO-1 shows the large specific capacitance value of 168[Formula: see text]Fg[Formula: see text] at a current density of 0.5[Formula: see text]Ag[Formula: see text] compared with other NiO and NiO-2 NPs. The study suggests that the low concentration of surfactant CTAB of NiO NPs plays an important role in supercapacitor applications because of the smaller crystallite sizes of the materials as well as a large number of active sites for faradic reaction.

scholarly journals Physicochemical, Photocatalytic, Antibacterial, and Antioxidant Screening of Bergenia Ciliata Mediated Nickel Oxide Nanoparticles

Crystals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1137
Author(s):  
Fazal Ur Rehman ◽  
Rashid Mahmood ◽  
Manel Ben Ali ◽  
Amor Hedfi ◽  
Amine Mezni ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Nickel Oxide ◽  
Average Particle Size ◽  
Diffusion Method ◽  
Resistant Bacteria ◽  
Oxide Nanoparticles ◽  
Average Particle ◽  
Nickel Oxide Nanoparticles ◽  
X Ray ◽  
Nio Nps

This study was planned to synthesize a multifunctional nanomaterial that can effectively encounter the organic pollutants, multidrug-resistant bacteria and reactive free radicals. The Bergenia ciliate (B. ciliate) leaves extract was used as a reducing and capping agent for the synthesis of nickel oxide nanoparticles (NiO NP). The physicochemical properties were studied through X-ray diffractometre (XRD), energy dispersive X-ray (EDX), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-visible and Fourier transform infrared (FTIR) spectroscopies. The highly crystalline monoclinic NiO NPs were synthesized with crystallite size of 27.45 nm. The average particle size derived from TEM micrograph was 49.35 nm whereas the calculated band gap for NiO NPs was 3.78 eV. The photocatalytic study shows that 92.17% of the rhodamine 6G (Rh-6G) was efficiently degraded in the presence of NiO NPs. The agar well diffusion method was applied to examine the antibacterial activity of NiO NPs and the activity was found higher against Gram-negative bacteria (GNB) as compared to Gram-positive bacteria (GPB). The ABTS free radical scavenging activity was also performed, however, the activity was found less than the standard.

Nickel oxide nanoparticles induce genotoxicity and cellular alterations in the ground beetle Blaps polycresta (Coleoptera: Tenebrionidae)

2021 ◽  
pp. 074823372110009
Author(s):  
Dalia Abdel Moneim Kheirallah ◽  
Awatef Mohamed Ali ◽  
Salah Eldein Osman ◽  
Amal Mohamed Shouman
Keyword(s):  
Nickel Oxide ◽  
Structural Changes ◽  
Ground Beetle ◽  
Biological Tissues ◽  
Treated Group ◽  
Sublethal Dose ◽  
Oxide Nanoparticles ◽  
Nickel Oxide Nanoparticles ◽  
Nio Nps ◽  
The Impact

Nickel nanoparticles (Ni-NPs) have advantageous applications in the industry; however, little is known of their adverse effects on biological tissues. In the present study, the ground beetle Blaps polycresta was employed as a sensitive indicator for nickel oxide nanoparticles (NiO-NPs) toxicity. Adult male beetles were injected with six dose levels of NiO-NPs (0.01, 0.02, 0.03, 0.04, 0.05, and 0.06 mg/g body weight). Mortality was reported daily over 30 days under laboratory conditions to establish an LD50. Nickel was detected in the testicular tissues of the beetles using X-ray analysis and transmission electronic microscopy. Beetles treated with the sublethal dose of 0.02 mg/g were selected to observe molecular, cellular, and subcellular changes. Gene transcripts of HSP70, HSP90, and MT1 were found to be increased >2.5-, 1.5-, and 2-fold, respectively, in the treated group compared with the controls. Decreased gene expression of AcPC01, AcPC02, and AcPC04 (≤1.5-, ≤2-, and < 2.5-fold, respectively, vs. controls) also were reported in the treated group. Under light microscopy, various structural changes were observed in the testicular tissues of the treated beetles. Ultrastructure observations using scanning and transmission electron microscopy showed severe damage to the subcellular organelles as well as deformities of the heads and flagella of the spermatozoa. Therefore, the present study postulated the impact of NiO-NPs in an ecological model.

Spectroscopic, Structural, and Morphology of Nickel Oxide Nanoparticles Prepared Using Physalis angulata Leaf Extract

2018 ◽  
Vol 917 ◽  
pp. 167-171 ◽  
Author(s):  
Najmawati Sulaiman ◽  
Yoki Yulizar
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Nickel Oxide ◽  
Band Gap ◽  
Leaf Extract ◽  
Optical Band Gap ◽  
Oxide Nanoparticles ◽  
Nickel Oxide Nanoparticles ◽  
Microscopic Studies ◽  
Nio Nps

Green synthesis of nickel oxide nanoparticles (NiO NPs) usingPhysalisangulataleaf extract (PALE) as weak base sources and stabilizing agents has been reported. Chemical bonding and vibration spectroscopy, crystallographic structure, optical band gap, particle size and microscopic studies of NiO NPs were also investigated. Ni-O vibration modes of NiO NPs were analyzed by FTIR and Raman instrument at ~400 and ~900 cm-1wavenumber. XRD pattern of NiO NPs confirmed cubic crystal structure with space groupFm-3m.Optical band gap of NiO NPs determined by using Tauc plot method was about 3.42 eV. Particle size analyzer showed size distribution of NiO NPs was 64.13 nm which confirm NiO formed in nanoscale. Electron microscopic studies of NiO NPs were observed by using scanning electron microscopy and transmission electron microscopy.

scholarly journals Antimycobacterial, Antioxidant and Cytotoxicity Activities of Mesoporous Nickel Oxide Nanoparticles for Healthcare

Coatings ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1242
Author(s):  
Jivan R. Kote ◽  
Ambadas S. Kadam ◽  
Mohd Ubaidullah ◽  
Abdullah M. Al-Enizi ◽  
Mohammed A. Al-Abdrabalnabi ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Nickel Oxide ◽  
Longitudinal Optical ◽  
Oxide Nanoparticles ◽  
Potential Candidate ◽  
Nickel Oxide Nanoparticles ◽  
Silar Method ◽  
Hemolysis Assay ◽  
Nio Nps

Nanobiotechnology has offered great attention in drug delivery and the development of various medicines used to treat microorganism infections. The present investigation deals with antimycobacterial activity, in-vitro hemolysis assay, and antioxidant activity of nickel oxide nanoparticles (NiO NPs). NiO NPs, with controlled size and shape, prepared by a simple and inexpensive successive ionic layer adsorption and reaction (SILAR) method was scanned using field emission scanning electron microscopy (FE-SEM) and high-resolution transmission electron microscopy (HR-TEM) digital images for surface morphology confirmation. Spherical irregular island-type NPs of about 24 nm diameter are obtained. The X-ray diffraction pattern demonstrates the synthesis of polycrystalline and cubic in phase NiO NPs. The Raman spectrum has revealed the presence of two vibration bands cantered at 550 and 1095 cm−1 for one photon longitudinal optical, and two longitudinal optical modes, respectively. The as-prepared NiO NPs endow 10 µg/mL against Mycobacterium tuberculosis (M. tuberculosis, MTCC-300) and 10 µg/mL against Mycobacterium phlei (M. phlei, MTCC-1723) inhibitory concentrations. The hemolytic activity of NiO NPs has also been explored. The antioxidant result demonstrates 63.44% for NiO NPs over 88.23% for standard, i.e., di(phenyl)-(2, 4, 6-trinitrophenyl) viminoazaniun antioxidant. Taken together, NiO NPs act as a potential candidate against mycobacteria.

scholarly journals Phytotoxicological Effects of Bulk-NiO and NiO Nanoparticles on Lesser and Giant Duckweeds as Model Macrophytes: Changes in the Plants Physiological Responses

2018 ◽  
Vol 12 (4) ◽  
pp. 31-39
Author(s):  
Samaneh Torbati ◽  
Keyword(s):  
Electron Microscopy ◽  
Antioxidant Enzymes ◽  
Nickel Oxide ◽  
Plant Species ◽  
Photosynthetic Pigments ◽  
Lemna Minor ◽  
Oxide Nanoparticles ◽  
Nickel Oxide Nanoparticles ◽  
Toxicological Effects ◽  
Nio Nps

Background: Although the production and usage of nanoparticles and their entrance to the ecosystem have increased in last decades, information about their negative impacts on organisms is scarce. We concentrated on the comparison of the toxicological effects of different concentrations of bulk-nickel oxide and nickel oxide nanoparticles (NiO-NPs) on lesser (Lemna minor L.) and giant (Spirodela polyrhiza (L.) Schleid.) duckweeds as two model macrophytes. Methods: The morphology of nickel oxide nanoparticles was studied by scanning electron microscopy (SEM) and transition electron microscopy (TEM). The plant's growth, photosynthetic pigments content, the contents of total phenols, flavonoids and MDA, and the activities of some antioxidant enzymes were investigated as indices to assess the toxicological effects of the NPs on two plant species. Results: The content of photosynthetic pigments in both of the plant species was significantly reduced by high concentration of NiO-NP. Increasing the concentration of the contaminants in the plant species was led to the remarkable enhancement of total phenol and flavonoid and MDA contents. Moreover, increasing the activity of the plant's antioxidant enzymes could reflect high reactive oxygen species (ROS) production after the plant's treatments with the contaminants. Conclusion: The negative effects of the NiO-NPs, especially in high concentrations, on L. minor and S. polyrhiza were more than those of Bulk-NiO.

TOXIC EFFECTS ASSESSMENT OF NICKEL OXIDE NANOPARTICLES BY INHALATION

2018 ◽  
pp. 24-29 ◽  
Author(s):  
B.A. Katsnelson ◽  
M.P. Sutunkova ◽  
L.I. Privalova ◽  
S.N. Solovjeva ◽  
V.B. Gurvich ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Redox Balance ◽  
Systemic Toxicity ◽  
Laboratory Animals ◽  
Oxide Nanoparticles ◽  
Nickel Oxide Nanoparticles ◽  
White Rats ◽  
Liver And Kidney ◽  
Stimulation Of Erythropoiesis ◽  
Nio Nps

The article presents in an experiment obtained principal results based on repeated low-level inhalation exposures of laboratory animals (white rats, outbred) to nickel oxide nanoparticles with a diameter of (23 ± 5) nm, 4 hours a day, 5 times a week for up to 10 months in a «nose only» installation. It was shown that non-specific body reactions to the action of NiO NPs include: diverse manifestations of systemic toxicity with a particularly pronounced influence on liver and kidney function, redox balance, damage to some areas of brain tissue, associated with proven movement of the nanoparticles themselves from the nasal mucosa along the olfactory tract; some cytological signs of probable development for allergic syndrome; paradoxically low severity of pulmonary pathology by pneumoconiotic type explained by a small chronic delay of nanoparticles in the lungs; the genotoxic effect of the organismal level, even at those low levels of chronic exposure, at which systemic toxicity is rather poorly. Along with that, NiO NPs also induce phase-stimulation of erythropoiesis, which is relatively specific for the toxic nickel effects.

scholarly journals The inhibitory role of synthesized Nickel oxide nanoparticles against Hep-G2, MCF-7, and HT-29 cell lines: the inhibitory role of NiO NPs against Hep-G2, MCF-7, and HT-29 cell lines

2021 ◽  
Vol 14 (3) ◽  
pp. 443-453
Author(s):  
Mohammad Amin Jadidi Kouhbanani ◽  
Yasin Sadeghipour ◽  
Mina Sarani ◽  
Erfan Sefidgar ◽  
Saba Ilkhani ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Cell Lines ◽  
Oxide Nanoparticles ◽  
Hep G2 ◽  
Nickel Oxide Nanoparticles ◽  
Inhibitory Role ◽  
Nio Nps ◽  
Ht 29 ◽  
Mcf 7

scholarly journals Evaluation of the Biological Activity of Nickel Oxide Nanoparticles as Antibacterial and Anticancer Agents

2020 ◽  
pp. 2888-2896
Author(s):  
Maha Fakhry Altaee ◽  
Laith A. Yaaqoob ◽  
Zaid K. Kamona
Keyword(s):  
Antibacterial Activity ◽  
Nickel Oxide ◽  
Cell Lines ◽  
Cancer Cell ◽  
Anticancer Agents ◽  
Cancer Cell Lines ◽  
Oxide Nanoparticles ◽  
Caspase 9 ◽  
Nickel Oxide Nanoparticles ◽  
Nio Nps

In the present study, nickel oxide nanoparticles (NiO NPs) were evaluated as an antibacterial and anticancer agent. The nanoparticles of nikel oxide were synthesized using aloe vera leaves extract and characterized with AFM (showing an average diameter of 45.11 nm), XRD and FE-SEM analyses. Three different concentrations (125, 250 and 500 µg/ml) were prepared from the synthesized NiO NPs and investigated for their potential antibacterial activity against both Enterococcus faecalis (Gram-positive bacteria) and Acinobacter baumannii (Gram-negative bacteria). While cytotoxicity and apoptotic activity were measured on both MCF-7 and AMJ13 cancer cell lines by  MTT and caspase-9 luminescence assays. The results showed that NiO NPs inhibit bacterial growth, as indicated by large inhibition zones  against both tested bacteria, with all studied concentrations. Moreover, the results of cytotoxicity and caspase-9 activity assays were in concordance with those of  antibacterial activity, showing high cytotoxicity and apoptotic effects against both of the studied cancer cell lines and with all the tested concentrations of NiO NPs. Both the antibacterial and anticancer activities of NiO NPs were dose-dependent. 

Biological Activity and Characterization of Green Synthesized Nickel Oxide Nanoparticles Derived from Sterculia foetida Leaf Extract

2019 ◽  
Vol 17 (12) ◽  
pp. 977-981
Author(s):  
K. Subashini ◽  
S. Prakash ◽  
V. Sujatha
Keyword(s):  
Antibacterial Activity ◽  
Nickel Oxide ◽  
Leaf Extract ◽  
Combustion Method ◽  
Oxide Nanoparticles ◽  
Solution Combustion ◽  
Nickel Oxide Nanoparticles ◽  
Pxrd Pattern ◽  
Stretching Vibration ◽  
Nio Nps

The catalytic, optical and thermal properties are based on the size of the nanoparticles. Nickel oxide nanoparticles have unique optical property and excellent antibacterial activity. The present study aims for the synthesis of Nickel oxide nanoparticles (NiO NPs) using Sterculia foetida (S. foetida) leaf extract as reducing agent by solution combustion method. The synthesized Nickel oxide nanoparticles (NiO NPs) were confirmed by UV-Visible spectroscopy (UV) with the peak at 370 nm and at the temperature of 450 ± 10 °C, Fourier transform infrared (FTIR) wavelength was observed at 1418 cm–1 1027 cm–1 shows C–O stretching vibration and at 507 cm–1 vibration of Ni–O bond found. Crystalline structure and the formation of monoclinic phase revealed by Powder X-ray diffraction (PXRD) pattern, the percentage of nickel and oxygen of NiO NPs were confirmed with EDAX analysis. The Scanning electron microscopy (SEM) and Transmission electron microscope (TEM) images indicate the shape of Nickel oxide nanoparticles (NiO NPs) with the size range of 10–51 nm. Staphylococcus aureus (S. aureus) (Gram positive) and Escherichia coli (E. coli) (Gram negative) bacteria's were taken to study about antibacterial activity against the green synthesized Nickel oxide nanoparticles (NiO NPs). The Nickel oxide nanoparticles have pharmaceutical and other biomedical applications.

scholarly journals Characterization of Nickel Oxide Nanoparticles Synthesized under Low Temperature

Micromachines ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1168
Author(s):  
Sung-Jei Hong ◽  
Hyuk-Jun Mun ◽  
Byeong-Jun Kim ◽  
Young-Sung Kim
Keyword(s):  
Low Temperature ◽  
Nickel Oxide ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Nickel Oxide Nanoparticles ◽  
Temperature Method ◽  
Bet Specific Surface Area ◽  
Heat Treated ◽  
Nio Nps ◽  
Xrd Patterns

In this study, ultrafine nickel oxide nanoparticles (NiO NPs) were well synthesized using a simple wet chemical method under low temperature, 300 °C. An Ni(OH)2 precursor was well precipitated by dropping NH4OH into an Ni(Ac)2 solution. TG-DTA showed that the weight of the precipitate decreases until 300 °C; therefore, the precursor was heat-treated at 300 °C. X-ray diffraction (XRD) patterns indicated that hexagonal-structured NiO NPs with (200) preferred orientation was synthesized. In addition, BET specific surface area (SSA) and HRTEM analyses revealed that spherical NiO NPs were formed with SSA and particle size of 60.14 m2/g and ca. 5–15 nm by using the low temperature method. FT-IR spectra of the NiO NPs showed only a sharp vibrating absorption peak at around 550 cm−1 owing to the Ni-O bond. Additionally, in UV-vis absorption spectra, the wavelength for absorption edge and energy band gap of the ultrafine NiO NPs was 290 nm and 3.44 eV.

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