Rapid and eco-friendly synthesis of copper nanoparticles

Suresh, Y.; Annapurna, S.; Bhikshamaiah, G.; Singh, A.K.

doi:10.1063/1.4872606

Cited by 7 publications

(8 citation statements)

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“…in the “green” synthesis of copper oxide nanoparticles, CuO, in this way obtaining a material with significant antibacterial action. In addition, Suresh et al report the obtainment of metal copper nanoparticles using different metal precursors (nitrate, sulphate, and chloride), Carica papaya extract as a stabilizing agent, but using hydrazine as a reducing agent. In another study, Kulkarni and Kulkarni describe the production of metal copper nanoparticles using basil extract (Ocimum sanctum) as a reducing agent.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of copper oxide nanoparticles impregnated on activated carbon using Moringa oleifera leaves extract for the removal of nitrates from water

et al. 2018

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The present work aims at impregnating copper oxide nanoparticles (Cu NPs) on activated carbon by means of green synthesis with Moringa oleifera leaf extract to develop a material to remove contaminants from water. The produced materials were characterized by means of their textural (specific surface area), morphological (Transmission Electron Microscopy), and structural (X‐ray Diffraction) properties. Particles size was estimated by Scherrer equation and the elemental copper concentrations were estimated by Total Reflection X‐ray Fluorescence (TXRF). Adsorption experiments, as well as pH, kinetics, and adsorption isotherms studies were carried out with the intent of evaluating the efficiency of nitrate (NO3‐) removal from water. The impregnation efficiency of Cu NPs on activated carbon after the adsorption process was measured by means of TXRF analyses. Characterization results confirmed the formation, impregnation, and stability of copper oxide nanoparticles supported on activated carbon, whose crystallite average size ranged between 6 and 61 nm. The proposed method for the nanoparticles synthesis and impregnation were demonstrated to be simple and eco‐friendly. Impregnated carbons presented significant nitrate removal (about 60 %) thus indicating their potential application in water treatment.

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Section: Introductionmentioning

confidence: 99%

Green synthesis of copper oxide nanoparticles impregnated on activated carbon using Moringa oleifera leaves extract for the removal of nitrates from water

et al. 2018

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“…The obtained images for the synthesized and loaded CuCtsNPs were presented in Figure 7 and 8. The image indicates clearly that the particle size obtained CuCtsNPs were small with size ranging from 21-56 nm and mostly spherical in shape [54,55]. The image obtained for 2,4-D-CuCtsNPs, indicates clearly that the particle size obtained were small with size ranging from 25-69 nm and show shapes ranging from rod to bud-shape [56,45,54,55].…”

Section: Scanning Electron Microscopic Analysismentioning

confidence: 99%

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et al. 2020

Asian J. Nanosci. Mater.

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This study used chitosan as a capping agent and L-ascorbic acid as reducing agent to prepare copper nanoparticles encapsulated with 2,4-D dimethylamine herbicide via a green chemical reduction method to improve its herbicidal activity and reduce the negative environmental impacts associated with its application. Characterization of the synthesized CuCtsNPs and 2,4-D-CuCtsNPs was carried out using the following techniques; transmission electron microscopy (TEM), fourier transform-infra-red (FT-IR), scanning electron microscopy (SEM), energy-dispersive x-ray (EDX), powder x-ray diffraction (PXRD), differential scanning calorimeter (DSC), thermogravimetric and differential thermal analysis (TGA/DTA). The maximum absorption peak of CuCtsNPs was observed around 560 nm while that of 2,4-D-CuCtsNPs at 558 nm. The yield of CuCtsNPs was at the range of 40-92% and encapsulation efficiency of the 2,4-D-CuCtsNPs formulationwas 93%. Debye-Scherer's equation was used to calculate the average crystalline size of the synthesized CuCtsNPs and 2,4-D-CuCtsNPs. The values were 38.78 nm (CuCtsNPs) and 54.93 nm (2,4-D-CuCtsNPs) respectively. The SEM images revealed the particle size of 21-56 nm for CuCtsNPs and 25-69 nm for 2,4-D-CuCtsNPs. The results obtained from the DSC and TGA curves of CuCtsNPs and 2,4-D-CuCtsNPs showed that the formulations exist in crystalline state and were thermally stable up to 401.73 °C. Aqueous release studies for the formulation were carried out in three different pH media and two agricultural soils. Leaching profile of the loaded CuCtsNPs through the soil layer (UAM and CAPS) demonstrated that the UAM soil had higher value for 2,4-D (58.67%) than in CAPS soil 40.78%. This study formulated an environmentally friendly herbicide delivery nano-matrix (CuCtsNPs) for the successful slow release of 2,4-D Dimethylamine herbicide in aqueous medium and agricultural soils.

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“…SEM and TEM spectra confirm that average particle size of the copper nanoparticles was around 20 nm. CuNPs were synthesized using papaya extract by Suresh et al [19]. UV-Visible absorption peak was obtained at 560 nm [19].…”

Section: Antibacterial Activity Of Copper Oxide Nanoparticlesmentioning

confidence: 99%

“…CuNPs were synthesized using papaya extract by Suresh et al [19]. UV-Visible absorption peak was obtained at 560 nm [19]. The synthesized nanoparticles were found to be spherical and crystalline with the particle size of 20 nm.…”

Section: Antibacterial Activity Of Copper Oxide Nanoparticlesmentioning

confidence: 99%

Green Synthesis of Metal Oxide Nanoparticles and Studies of Their Antibacterial Efficacy against Common Pathogens

2019

ANN

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Green synthesis of metal oxide nanoparticles has been emerging highlight of the research owing to its unique properties that make them applicable in various fields of science and technology. The method of synthesis is simple, cost effective and environmental friendly. After review, we reported the phyto-synthesis of metal oxide nanoparticles using plant extract with an emphasis on recent developments. Biomolecules such as alkaloids, flavonoids, polyphenols etc. present in the plant extract can be used for the reduction of metal ions to nanoparticles in a single step process. These extract also act as a stabilizing agent. Although, a good number of work has been reported for the synthesis of gold and silver nanoparticles. However, limited no of work has been reported for the synthesis of copper, zinc and iron oxide nanoparticles. We have discussed the green synthesis of copper, zinc and iron oxide nanoparticles and potential of their antibacterial efficacy

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Rapid and eco-friendly synthesis of copper nanoparticles

Cited by 7 publications

References 1 publication

Green synthesis of copper oxide nanoparticles impregnated on activated carbon using Moringa oleifera leaves extract for the removal of nitrates from water

Green synthesis of copper oxide nanoparticles impregnated on activated carbon using Moringa oleifera leaves extract for the removal of nitrates from water

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Green Synthesis of Metal Oxide Nanoparticles and Studies of Their Antibacterial Efficacy against Common Pathogens

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