Effect Of Synthesis Time On Structural, Optical And Electrical Properties Of CuO Nanoparticles Synthesized By reflux Condensation Method

Bouazizi, Nabil; Bargougui, R.; Oueslati, A.; Benslama, R.

doi:10.5185/amlett.2015.5656

Cited by 119 publications

(34 citation statements)

References 2 publications

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“…8 A variety of methods have been used to prepare nanoparticles of copper oxides, including sol-gel methods, 9 solid-state reaction, 10 sonochemical preparation, 11 alkoxidebased preparation, 12 glycine-assisted combustion, 13 and a reflux condensation method. 14 Among these techniques the sol-gel technique is easiest, requires use of low temperatures, and is most economical. Nanoparticles of different materials have been synthesized by use of sol-gel techniques.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Copper Oxide Nanoparticles Fabricated by the Sol–Gel Method

Kayani

Umer

Riaz

et al. 2015

Journal of Elec Materi

137

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Copper oxide nanoparticles were successfully prepared by a sol-gel technique. An aqueous solution of copper nitrate Cu(NO 3 ) 2 and acetic acid was used as precursor. On addition of sodium hydroxide (NaOH) a precipitate of copper oxide was immediately formed. The copper oxide nanoparticles were characterized by use of x-ray diffractometry (XRD), thermogravimetric analysis (TGA), differential thermal analysis, differential scanning calorimetry, Fourier-transform infrared spectroscopy (FTIR), vibrating sample magnetometry, and scanning electron microscopy (SEM). The XRD pattern contained sharp peaks of copper oxide nanoparticles with mixed cuprite and tenorite phases. Use of the Debye-Scherer equation showed that the crystallite size of the copper oxide nanoparticles increased with increasing annealing temperature. FTIR spectra revealed vibration of the CuO band at 473 cm À1 ; a band at 624 cm À1 was attributed to Cu 2 O. Maximum coercivity and saturation magnetization of the nanoparticles were 276 Oe and 0.034 emu/g, respectively. SEM micrographs of the nanoparticles revealed the presence of spherical nanoparticles of the tenorite phase whereas the cuprite phase was in the form of a compact deposit.

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Section: Introductionmentioning

confidence: 99%

Characterization of Copper Oxide Nanoparticles Fabricated by the Sol–Gel Method

Kayani

Umer

Riaz

et al. 2015

Journal of Elec Materi

137

View full text Add to dashboard Cite

show abstract

“…Compared to the common copper oxide powder, nano copper oxide shows better catalytic activity and selectivity [5]. CuO nanoparticles are prominent due to their diverse applications in superconductors, optical [6], electrical [7], nanofluids [8], catalytic [9], photocatalytic degradation [10], gas sensors, and in biosensors [11]. The factors including size, shape and composition of nanoparticles affects the interaction between the nanoparticles and living cells [12].…”

Section: Introductionmentioning

confidence: 99%

CuO NANOPARTICLES: SYNTHESIS, CHARACTERIZATION AND THEIR BACTERICIDAL EFFICACY

2017

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Objective: In the present study copper oxide (CuO) nanoparticles were synthesized and characterized. The antibacterial activity of CuO nanoparticles was carried out against Escherichia coli, Proteus vulgaris, Staphylococcus aureus and Streptococcus mutans. Methods:The synthesis was carried out by coprecipitation method using copper sulfate and sodium hydroxide as precursors. The synthesized copper oxide nanoparticles were characterized by using X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FT-IR), UV-vis spectroscopy and scanning electron microscope (SEM) with Dept of Physics, acharya Nagarjuna University, NH16, Nagarjuna Nagar, Guntur, Andhra Pradesh 522510 Email: peddikiranmayi@gmail.comEnergy Dispersive X-ray Analysis (EDX) techniques. Besides, this study determines the antibacterial activity and minimum inhibitory concentration (MIC) of CuO nanoparticles against gram-positive (Staphylococcus aureus and Streptococcus mutans) and gram-negative (E. coli and Proteus vulgaris) bacteria. Results:The average crystallite size of CuO nanoparticles was found to be 19 nm by X-ray diffraction. FT-IR spectrum exhibited vibrational modes at 432 cm -1 , 511 cm -1 and 611 cm -1 Keywords: CuO nanoparticles, XRD, FTIR, SEM, EDS, Antibacterial activity were assigned for Cu-O stretching vibration. According to UV-Vis spectrum, two bands were observed at 402 nm and 422 nm. ED's spectrum shows only elemental copper (Cu) and oxide (O) and no other elemental impurity was observed. The antimicrobial assay revealed that Proteus vulgaris showed a maximum zone of inhibition (37 mm) at 50 mg/ml concentration of CuO nanoparticles. Conclusion:In conclusion, copper oxide is a good antibacterial agent against both gram positive and gram-negative organisms.

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“…[30]; Peak at 44.48° angle is clearly observed assigning to (2 2 0) lattice planes of facecentered cubic (FCC) structure of metallic gold according to standard data (JCPDS No. 04-0784) [31], the Broadening of XRD peaks clearly indicate that the Au NPs and CuO Nps are nanocrystalline in nature.…”

Section: -X-ray Diffraction Patternmentioning

confidence: 98%

Synthesis and Characterization of Au:CuO Nanocomposite by Laser Soldering on Porous Silicon for Photodetector

Rashed

Moatasemballah

2017

JNUS

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This work aimed to the synthesize of composite Au:CuO (NPs) by pulsed laser soldering process. The optical properties, stability, structural properties and surface morphology of Au:CuO nanocomposite were characterized by UV-VIS spectrophotometer, Zeta potential measurement, XRay Diffraction pattern and Atomic Force Microscope respectively. The band gap of Au doped CuO is about 1.95 eV. The amount of zeta potential is -54 mV, its indicating that the negatively charged of Au: CuO nanocomposite in deionized water and the colloid is good stability against aggregation. Surface morphology of Au:CuO nanocomposite show a large number of particles have diameter about 55nm.Au: CuO nanocomposite deposited on porous silicon by drop casting technique for preparation of silicon photodetector, the electrical properties prove that band gap alignment between Au: CuO nanocomposite and PS facilitates the electron transfer and further increases the photoresponsitivity and Quantum efficiency.

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Effect Of Synthesis Time On Structural, Optical And Electrical Properties Of CuO Nanoparticles Synthesized By reflux Condensation Method

Cited by 119 publications

References 2 publications

Characterization of Copper Oxide Nanoparticles Fabricated by the Sol–Gel Method

Characterization of Copper Oxide Nanoparticles Fabricated by the Sol–Gel Method

CuO NANOPARTICLES: SYNTHESIS, CHARACTERIZATION AND THEIR BACTERICIDAL EFFICACY

Synthesis and Characterization of Au:CuO Nanocomposite by Laser Soldering on Porous Silicon for Photodetector

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