Synthesis, Characterization, and Applications of Copper Nanoparticles

Din, Muhammad Imran; Rehan, Rida

doi:10.1080/00032719.2016.1172081

Cited by 231 publications

(103 citation statements)

References 59 publications

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“…By increasing the concentration of plant extract, the concentration of phytochemicals increased and the reduction of copper salt also increased. Due to the fast reduction of the metal salt, the size of the nanoparticles also decreased [101]. …”

Section: Biosynthesis Of Copper Nanoparticlesmentioning

confidence: 99%

Green Adeptness in the Synthesis and Stabilization of Copper Nanoparticles: Catalytic, Antibacterial, Cytotoxicity, and Antioxidant Activities

et al. 2017

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Copper nanoparticles (CuNPs) are of great interest due to their extraordinary properties such as high surface-to-volume ratio, high yield strength, ductility, hardness, flexibility, and rigidity. CuNPs show catalytic, antibacterial, antioxidant, and antifungal activities along with cytotoxicity and anticancer properties in many different applications. Many physical and chemical methods have been used to synthesize nanoparticles including laser ablation, microwave-assisted process, sol-gel, co-precipitation, pulsed wire discharge, vacuum vapor deposition, high-energy irradiation, lithography, mechanical milling, photochemical reduction, electrochemistry, electrospray synthesis, hydrothermal reaction, microemulsion, and chemical reduction. Phytosynthesis of nanoparticles has been suggested as a valuable alternative to physical and chemical methods due to low cytotoxicity, economic prospects, environment-friendly, enhanced biocompatibility, and high antioxidant and antimicrobial activities. The review explains characterization techniques, their main role, limitations, and sensitivity used in the preparation of CuNPs. An overview of techniques used in the synthesis of CuNPs, synthesis procedure, reaction parameters which affect the properties of synthesized CuNPs, and a screening analysis which is used to identify phytochemicals in different plants is presented from the recent published literature which has been reviewed and summarized. Hypothetical mechanisms of reduction of the copper ion by quercetin, stabilization of copper nanoparticles by santin, antimicrobial activity, and reduction of 4-nitrophenol with diagrammatic illustrations are given. The main purpose of this review was to summarize the data of plants used for the synthesis of CuNPs and open a new pathway for researchers to investigate those plants which have not been used in the past. Graphical abstractProposed Mechanism for Antibacterial activity of copper nanoparticles.

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Section: Biosynthesis Of Copper Nanoparticlesmentioning

confidence: 99%

Green Adeptness in the Synthesis and Stabilization of Copper Nanoparticles: Catalytic, Antibacterial, Cytotoxicity, and Antioxidant Activities

et al. 2017

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“…The size of NPs is increased by increasing the pH of the reaction. Moreover, copper NPs are produced at lower pH in opposite of copper oxide, which are produced at higher pH due to the presence of much hydroxides . To investigate the effect of pH on the CuO NGs produced, five experiments were done at different pH environment (for pH=4, 7, 9, 11 and 13).…”

Section: Resultsmentioning

confidence: 99%

“…However, CuO NPs which were prepared in presence of CTAB showed the most convenient catalytic action for the reduction of MB ‐ it illustrated the decrease in MB's absorption 12.6‐fold after 18 minutes. These results are in accordance with the fact that small NGs have more catalytic activity from the aggregated spheres ones . The difference in the reduction activity was very clear when plotting the maximum absorbance at 660 nm versus time (See Figure D).…”

Section: Resultsmentioning

confidence: 99%

Green Synthesis of Curcumin Conjugated CuO Nanoparticles for Catalytic Reduction of Methylene Blue

2020

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A novel simple green synthesis route was applied to produce copper oxide (CuO) nanoparticles (NPs) and CuO nanograins (NGs) by using cupric chloride dihydrated as copper salt precursor, curcumin (a natural and non-toxic food spice) as conjugated agent with or without cetyl trimethylammonium bromide acting as a stabilizing agent at extreme basic condition. Synthesis of this curcumin conjugated CuO nanoparticles was optimized by studying effect of several parameters starting with copper salt precursor, curcumin concentration, pH and temperature. Scanning electron microscopy coupled to Energy Dispersive X-ray Analyzer, thermogravimetirc analysis, X-ray diffraction, UV-visible spectroscopy, fluorescence spectroscopy and zeta potential were used to characterize the resulted CuO NPs/NGs. In this work, the synthesized copper oxide nanograins were found to be efficient nano-catalysts for the reduction of methylene blue and it was found that nanograin has better catalytic activity compared to spherical shape nanoparticles, emphasizing shape of the CuO particles is crucial for its nanocatalytic activity.

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“…Copper has been widely used in many industrial applications because of its superior thermal and electrical conductivity. However, copper has inadequate mechanical properties from the structural application point of view . The problem of inadequate mechanical properties has been addressed up to a certain extent by using fine particles such as oxides of aluminum in copper.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, gas sensing, and electrical property evaluation of polyaniline/copper‐alumina nanocomposites

2019

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A series of organic‐inorganic hybrid of polyaniline (PANI)/copper‐alumina (Cu‐Al2O3) nanocomposites were prepared by in situ polymerization technique. The structural, morphological and thermal properties of PANI with different contents of nano Cu‐Al2O3 were characterized by Fourier transform infrared spectroscopy (FTIR), X‐ray diffraction analysis (XRD), scanning electron microscopy (SEM), high‐resolution transmission electron microscope (HR‐TEM), differential scanning calorimetry (DSC), and thermogravimteric analysis. The dielectric constant, dielectric loss and the AC conductivity were measured using a dielectric analyzer in a frequency ranging from 100 Hz to 1 MHz. Also, current (I)‐voltage (V) characteristics and gas sensing performance of the composites were studied in detail. The FTIR spectra of composite exhibited the IR band of nanoparticles in the macromolecular chain of PANI. The XRD pattern showed the systematic arrangement of Cu‐Al2O3 particles in the molecular structure of polyaniline. The SEM and TEM images indicated that the nanoparticles were sheathed by polyaniline. DSC results showed that incorporation of Cu‐Al2O3 accelerated the glass transition temperature of PANI. TG analysis demonstrated the enhancement in thermal stability of PANI/Cu‐Al2O3 nanocomposite relative to the base polymer. Conductivity studies showed that both AC and DC conductivity, dielectric constant, and dielectric loss increased with increase in the concentration of nanoparticles up to 5 wt%. Similarly, the ammonia gas sensing behavior of nanocomposites was also improved by the addition of Cu‐Al2O3 nanoparticles.

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Synthesis, Characterization, and Applications of Copper Nanoparticles

Cited by 231 publications

References 59 publications

Green Adeptness in the Synthesis and Stabilization of Copper Nanoparticles: Catalytic, Antibacterial, Cytotoxicity, and Antioxidant Activities

Green Adeptness in the Synthesis and Stabilization of Copper Nanoparticles: Catalytic, Antibacterial, Cytotoxicity, and Antioxidant Activities

Green Synthesis of Curcumin Conjugated CuO Nanoparticles for Catalytic Reduction of Methylene Blue

Synthesis, characterization, gas sensing, and electrical property evaluation of polyaniline/copper‐alumina nanocomposites

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