A MINI REVIEW ON COPPER OXIDE NANOMATERIALS (original) (raw)
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Synthesis of copper oxide nanoparticles via sol-gel method
Recently copper oxide nanoparticles attracted the investigators due to their significant characteristics and employment in semiconductors, magnetic storage media, solar energy transformation, near-infrared tilters, high-tech superconductors, gas sensors, photoconductive and photothermal devises. Copper oxide nanoparticles are the semiconductor materials having band gap energy 1.2 eV. In the present study Copper oxide nanoparticles were synthesized by sol gel method using CuCl2.2H2O and sodium hydroxide as precursors. The structure and morphology of synthesized copper oxide nanoparticles was investigated utilizing of X-ray diffraction (XRD) spectroscopy and Scanning Electron Microscopy (SEM).
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Copper oxide nanoparticles (CuO-NPs) were synthesized via chemical precipitation method using copper (II) chloride dihydrate and sodium hydroxide. Then nanoparticles were characterized by using X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Energy Dispersive X-ray (EDX), and Fourier Transform Infra Red (FTIR) spectroscopy. The XRD patterns and EDX spectra showed that the prepared CuO-NPs were highly pure, crystalline and nano-sized. The SEM image suggested that nano particles were spherical and there was a tendency of agglomerations. The nanoparticles showed interactions between copper and oxygen atoms supported by FTIR studies.
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The current study compared the synthesis, characterization and properties of copper oxide nanoparticles (CuO) based on green and traditional chemical methods. The synthesized CuO were confirmed by spectroscopic and morphological characterization such as ultraviolet-visible (UV-vis) spectroscopy, fourier transform infrared (FTIR) spectroscopy, zeta potential, scanning electron microscopy (SEM) and energy dispersed X-ray (EDX). Electrochemical behavior of the modified electrodes was done using cyclic voltammetry (CV) in ferricyanide/ferrocyanide ([Fe(CN)6]4−/[Fe(CN)6]3−) redox probe. As revealed by UV spectrophotometer, the absorption peaks ranged from 290–293 nm for all synthesized nanoparticles. Based on SEM images, CuO were spherical in shape with agglomerated particles. Zeta potential revealed that the green CuO have more negative surface charge than the chemically synthesized CuO. The potential of the green synthesized nanoparticles was higher relative to the chemically synthesiz...
Synthesis and optical characterization of copper oxide nanoparticles
Copper oxide (CuO) nanoparticles are synthesized by aqueous precipitation method using copper acetate as a precursor and NaOH as a stabilizing agent. This gives a large scale production of CuO nanoparticles easily. X-ray diffraction pattern (XRD) reveals single phase monoclinic structure. Scanning electron microscopy (SEM) showed the rectangular morphology of as prepared CuO nanoparticles. The transmission electron microscopy (TEM) showed 5-6 nm size of as prepared CuO nanoparticles. Photoluminescence (PL) showed band edge emission at 398 nm and green emission at 527 nm. The band edge-absorption peak is found to be at 355 nm.
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AIP Conference Proceedings, 2015
This investigation reports the synthesis of copper oxide nanoparticles using different feasible methods and their structural characterization. The synthesis process involved few innovative along with some established procedures by using different precursors to report a comparison study. The synthesized nano particles were characterize from X-Ray Diffraction (XRD) studies, Scanning electron microscopy (SEM) analysis and Energy dispersive X-ray analysis (EDX) for their shapes and sizes. The sizes of the synthesized nanoparticles are in nano scale with spherical structures irrespective of the techniques used. The calculated value of particle size is also confirmed from Debye Scherrer's formula. EDX spectrum shows the elemental composition of the samples. In addition, XRD peak-broadening analysis was used to evaluate the size and lattice strain from Williamson-Hall plots. Similarly, the band gap energy was evaluated for all the synthesized samples from UV-visible spectrophotometric analysis. Overall, the results of different synthesis methods have come up quite interestingly and appreciably.
Preparation and Characterization of Copper Oxide Nanoparticles
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Synthesis and characterization of Copper oxide and Zinc Oxide nanomaterials
A facile method was introduced to synthesis copper oxide and zinc oxide nanomaterials with various morphologies. The copper oxide was prepared by solvo-thermal method and the zinc oxide was prepared by co-precipitation method. The influence of calcinations temperature on copper oxide and the influents of solvents on zinc oxide were examined. The crystalline size, morphology and the functional group analysis were done using X-ray diffraction, scanning electron microscope and Fourier transform infrared spectroscopy. The impact of synthesis methods and its influence in final structure of copper oxide and zinc oxide nanomaterials were explored.
Journal of Industrial and Engineering Chemistry, 2015
Nowadays nanomaterials are of immense interest due to wide range of applications in chemical, biological, and environmental sciences [1-3]. The size and shape of the nanomaterials are key factors for shaping their properties such as, electrical, optical, magnetic, catalytic, and antimicrobial. Metal and metal oxide nanoparticles have found wide variety of uses, including heterogeneous catalysts, colloid science, environmental remediation, electronic, optoelectronics, chemical sensing devices, medicinal applications, separations, thin films, inks, disinfection, and antimicrobial activity [4-6]. The different applications of metal and metal oxide nanoparticles varied with morphology and size [7,8]. Among the metal oxide nanoparticles, copper oxide nanoparticles have been potentially used for the PN junction diodes, humidity sensing, lithium ion battery, organic synthesis, antimicrobial activity and biomedical field [9-11]. Copper(II) oxide with a narrow bandgap (E g) of 1.0-2.08 eV behaves as a p-type semiconductor. The semiconducting nature of metal oxides makes them important for solar energy conversion, photocatalysis,