EFFECT OF THE CAPPING AGENT ON THE OPTICAL ABSORPTION EDGE OF COPPER OXIDE NANOPARTICLES FILM

In this work, the capped and uncapped copper oxide (CuO) nanoparticles film with an average size ranging from 8.7- 6.2 nm have been prepared by a chemical wet procedure using copper (II) sulfate with sodium hydroxide at 50 °C. The EDTA was used as a capping agent and the obtained samples were investigated by UV visible spectrum. The uncapped and EDTA capped CuO nanoparticles reveals two bands observed at 310 nm and 232 nm for uncapped and EDTA capped CuO nanoparticles respectively. The optical absorption spectra exhibits the energy band gap for uncapped and EDTA capped (CuO) in the range of (3.8 - 4.5) eV respectively.

Download Full-text

Green Synthesis of Copper Oxide Nanoparticles from Magnolia Champaca Floral Extract and its Antioxidant & Toxicity Assay using Danio Rerio

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.e6869.018520 ◽

2020 ◽

Vol 8 (5) ◽

pp. 5444-5449 ◽

Cited By ~ 1

Keyword(s):

Copper Oxide ◽

Visible Spectrum ◽

Spherical Shape ◽

Copper Oxide Nanoparticles ◽

Cuo Nanoparticles ◽

Physiochemical Properties ◽

Analytical Strategies ◽

Ft Ir ◽

Ir Analysis ◽

Uv Visible

The biosynthesis of copper oxide (GS-CuO) nanoparticles utilizing Magnolia champaca floral extract was studied, where the Magnolia champaca was used for the reduction of precurosor to elemental CuO nanopartciles which also provides stabilization. Physiochemical properties of GS-CuO nanoparticles were described utilizing analytical strategies like UV-Vis, XRD, FT-IR, SEM, TEM, Zeta potential and DLS analysis. The UV-Visible spectrum gave maximum absorbance in the scale of 250-350 nm. The biosynthesized GS-CuO was crystallite in nature and it was investigated by XRD and was verified with JCPDS NO: 89-589. FT-IR analysis spectrum at 3302 cm-1 is assigned for alcoholic hydroxide group, 1022 cm-1 correspondings to CH3 shaking vibration respectively. The morphology of biosynthesized nanoparticles was between 20 to 40 nm and spherical shape was investigated utilizing TEM. The antoxidant potentiality of GS-CuO was evaluated by DPPH, ABST test, that demonstrated inhibition values at 76.30% and 66.46% respectively. Toxicity quality examination was performed utilizing morphological investigation, incubating, and viability rate examination on zebrafish embryonic model. The toxicity quality assessment with zebrafish uncovered organ advancement with various viability and hatching speed at 48 and 72 hpf with LC50 of 500 ± 15 mg/L.

Download Full-text

Synthesis & Study of Nano Size Copper Oxide Particle via Chemical Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.829.187 ◽

2013 ◽

Vol 829 ◽

pp. 187-191

Author(s):

Maryam Abdolhosseinzadeh ◽

Niloofar Khodamoradi

Keyword(s):

Electron Microscopy ◽

Copper Oxide ◽

Oxide Particle ◽

Copper Oxide Nanoparticles ◽

Cuo Nanoparticles ◽

Molar Ratio ◽

Transmission Electron ◽

Uv Visible ◽

Micro Reactors ◽

Nano Size

Copper oxide nanoparticles have been synthesized using micro reactors made of bis (2-ethylhexyle) sulfosuccinate (AOT)/water/n-Hexane microemulsions. The controls of particles size was achieved by varying water to surfactant molar ratio (W0). At constant of surfactant concentration the increases in value of W0increased the population of micelles and resulted in lager particle size. Their sizes and appearance were characterized by TEM, SEM, Zetasizer, uv-visible methods. Scanning electron microscopy (SEM) showed the spherical morphology of as prepared CuO nanoparticles. The Transmission electron microscopy (TEM) showed 85 nm size of as prepared CuO particles.

Download Full-text

Biosynthesis of copper oxide nanoparticles using herbal formulation and its characterisation

International Journal of Research in Pharmaceutical Sciences ◽

10.26452/ijrps.v10i3.1436 ◽

2019 ◽

Vol 10 (3) ◽

pp. 2117-2119

Author(s):

Revathi B ◽

Rajeshkumar S ◽

Anitha Roy ◽

Lakshmi T

Keyword(s):

Copper Oxide ◽

Moringa Oleifera ◽

Spectroscopic Analysis ◽

Copper Oxide Nanoparticles ◽

Cuo Nanoparticles ◽

Oxide Nanoparticles ◽

Synthesis Of Nanoparticles ◽

Herbal Formulation ◽

Vis Spectroscopy ◽

Average Size

To study the biosynthesis of copper oxide nanoparticles using herbal formulation and its characterisation. To study the copper oxide nanoparticles biosynthesis using Moringha oriefera (I) Synthesis of nanoparticles using copper sulphate (II) Characterisation of nanoparticles using UV-visual spectroscopy. The size of the synthesised nanoparticles are found to be 2-100nm. The graph reached its peak at the wavelength of 300nm using UV-vis spectroscopy. The shape is spherical. These TEM and UV spectroscopic analysis confirmed the synthesis of copper oxide nanoparticles. Overall results, confirmed the size and shape of CuO nanoparticles using this process and suggested their applications in biomedicine. The biosynthesized copper oxide nanoparticles are spherical in shape with an average size of 2-100nm. The present research about the biosynthesis of copper oxide nanoparticles using the plant extract Moringa Oleifera has excellent biocompatibility. The particles which are smaller in size shows more immunity. Hence the nanoparticles are expected to be used in future for the effective drug systems and immunity against diseases.

Download Full-text

Synthesis and Optical Absorption Properties of Copper Oxide Nanoparticles for Applications in Transparent Surface Coatings and Solar Cells

Journal of Nano- and Electronic Physics ◽

10.21272/jnep.9(6).06028 ◽

2017 ◽

Vol 9 (6) ◽

pp. 06028-1-06028-2

Author(s):

P. K. Samanta ◽

◽

M. Das ◽

R. Hati ◽

M. Patra ◽

...

Keyword(s):

Solar Cells ◽

Optical Absorption ◽

Copper Oxide ◽

Copper Oxide Nanoparticles ◽

Surface Coatings ◽

Oxide Nanoparticles ◽

Absorption Properties ◽

Transparent Surface

Download Full-text

Green Synthesis, Characterization and Antibacterial Activity of Copper Oxide Nanoparticles Using Annona muricata Stem Extract

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.39498 ◽

2021 ◽

Vol 9 (12) ◽

pp. 1205-1214

Author(s):

Shivani Kushwaha

Keyword(s):

Antibacterial Activity ◽

Copper Oxide ◽

Copper Sulphate ◽

Copper Oxide Nanoparticles ◽

Maximum Activity ◽

Cuo Nanoparticles ◽

Oxide Nanoparticles ◽

Gradual Change ◽

Annona Muricata ◽

Stem Extract

Abstract: Nanotechnology is a rising field of science and technology that deals with the particles having size in the range of 1 to 100 nm. Copper oxide nanoparticles has many properties like antifungal activity, antibacterial activity, optical properties, conductive properties, etc. Due to its demand of diversified use, copper oxide nanoparticles were fabricated using ecofriendly and non-toxic Annona muricata stem extract. The extract with copper sulphate pentahydrate showed gradual change in the colour of the extract from brown to green which indicates the CuO nanoparticles synthesis. The fabrication is followed by characterization of CuO nanoparticles using UV-vis spectroscope, FTIR, XRD and SEM. The characterization showed roughly spherical shaped nanoparticles in the range of 100nm with high crystalline monoclinic phase. FTIR absorption spectra conclude that the compounds attached with copper oxide nanoparticles could be polyphenols with aromatic ring. The CuO nanoparticles exhibited antibacterial activity; it showed the maximum activity against E.coli (18 mm). Keywords: Annona muricata, copper sulphate pentahydrate, FTIR, nanomaterials, SEM, XRD.

Download Full-text

Size-dependent cytotoxicity of copper oxide nanoparticles in lung epithelial cells

Environmental Science Nano ◽

10.1039/c5en00271k ◽

2016 ◽

Vol 3 (2) ◽

pp. 365-374 ◽

Cited By ~ 24

Author(s):

Amaraporn Wongrakpanich ◽

Imali A. Mudunkotuwa ◽

Sean M. Geary ◽

Angie S. Morris ◽

Kranti A. Mapuskar ◽

...

Keyword(s):

Epithelial Cells ◽

Copper Oxide ◽

Copper Oxide Nanoparticles ◽

Cuo Nanoparticles ◽

Lung Epithelial Cells ◽

Oxide Nanoparticles ◽

Size Dependent ◽

Lung Epithelial

The increasing use of copper oxide (CuO) nanoparticles (NPs) in medicine and industry demands an understanding of their potential toxicities.

Download Full-text

A cyano-bridged copper(ii)–copper(i) mixed-valence coordination polymer as a source of copper oxide nanoparticles with catalytic activity in C–N, C–O and C–S cross-coupling reactions

New Journal of Chemistry ◽

10.1039/c4nj00829d ◽

2014 ◽

Vol 38 (9) ◽

pp. 4267-4274 ◽

Cited By ~ 7

Author(s):

Manoj Trivedi ◽

Sanjeev kumar Ujjain ◽

Raj Kishore Sharma ◽

Gurmeet Singh ◽

Abhinav Kumar ◽

...

Keyword(s):

Catalytic Activity ◽

Coordination Polymer ◽

Copper Oxide ◽

Mixed Valence ◽

Cross Coupling ◽

Copper Oxide Nanoparticles ◽

Cuo Nanoparticles ◽

Oxide Nanoparticles ◽

Coupling Reactions ◽

Cross Coupling Reactions

A cyano-bridged Cu(ii)–Cu(i) complex was synthesized and transformed into CuO nanoparticles. Their catalytic activity in C–N, C–O, and C–S cross-coupling reactions was explored.

Download Full-text

Preparation of a colloidal photonic crystal containing CuO nanoparticles with tunable structural colors

RSC Advances ◽

10.1039/c5ra21035f ◽

2015 ◽

Vol 5 (127) ◽

pp. 105200-105205 ◽

Cited By ~ 5

Author(s):

Chun-Feng Lai ◽

Yu-Chi Wang ◽

Chia-Lung Wu ◽

Jia-Yu Zeng ◽

Chia-Feng Lin

Keyword(s):

Photonic Crystal ◽

Copper Oxide ◽

Crystal Structures ◽

Copper Oxide Nanoparticles ◽

Cuo Nanoparticles ◽

Oxide Nanoparticles ◽

Structural Colors

Polystyrene colloidal photonic crystal structures containing copper oxide nanoparticles present tunable structural colors, which are highly useful properties for applications.

Download Full-text

Temperature characterization of dielectric permittivity and AC conductivity of nano copper oxide-doped polyaniline composite

Journal of Advanced Dielectrics ◽

10.1142/s2010135x16500181 ◽

2016 ◽

Vol 06 (03) ◽

pp. 1650018 ◽

Cited By ~ 6

Author(s):

L. N. Shubha ◽

P. Madhusudana Rao

Keyword(s):

Dielectric Permittivity ◽

Copper Oxide ◽

Ac Conductivity ◽

Morphological Changes ◽

Copper Oxide Nanoparticles ◽

Sem Images ◽

Increase With Increase ◽

Visible Spectra ◽

Uv Visible ◽

Lcr Meter

The polyaniline/copper oxide (PANI/CuO) nanocomposite was prepared by mixing solutions of polyaniline and copper oxide nanoparticles in dimethyl sulfoxide (DMSO). The synthesized polymer nanocomposites were characterized by X-ray powder diffraction (XRD), scanning electron microscope (SEM) and UV–visible spectroscopy. The characteristic peaks in XRD and UV–visible spectra confirmed the presence of CuO in the polymer structure. SEM images indicated morphological changes in the composite matrix as compared to the pristine PANI. The DC conductivity measurements were performed using two-probe method for various temperatures. AC conductivity and dielectric response of the composites were investigated in the frequency range of [Formula: see text]–[Formula: see text][Formula: see text]Hz using LCR meter. Dielectric permittivity [Formula: see text] and dielectric loss factor [Formula: see text] were investigated. It was observed that [Formula: see text] and [Formula: see text] decrease with increase in frequency at all temperatures. At a particular frequency it is observed that both [Formula: see text] and [Formula: see text] increase with increase in temperature. It was also observed that AC conductivity increased with increase in frequency and temperature.

Download Full-text