Biosynthesis of the CuO nanoparticles using
            <i>Euphorbia Chamaesyce</i>
            leaf extract and investigation of their catalytic activity for the reduction of 4‐nitrophenol

Maham, Mehdi; Sajadi, S. Mohammad; Kharimkhani, Mohammad Mahdi; Nasrollahzadeh, Mahmoud

doi:10.1049/iet-nbt.2016.0254

Cited by 29 publications

(9 citation statements)

References 49 publications

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“…The peaks at 622 cm −1 and around 1010–1122 cm −1 in S 2 and S 3 illustrate the stretching of O–Mn–O lattice vibrations [1, 38]. The wideband at 3000–3600 cm −1 assigned to the –OH band [39, 40]. The FTIR spectra confirm the presence of metal oxide NPs in the S 1 , S 2 , and S 3 .…”

Section: Resultsmentioning

confidence: 87%

Synthesis, characterisation, and antimicrobial activity of ZnO‐based nanocomposites

Faraji¹,

Hajimahdi²

2018

Micro & Nano Letters

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In this study, ZnO-based nanocomposites including ZnO/CuO (S 1), ZnO/MnO (S 2), and ZnO/MnO/CuO (S 3), were synthesised. S 1 , S 2 , and S 3 were characterised through Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS) techniques. Also, the antimicrobial property of the samples was examined against both Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli through the colony forming count method. FTIR analysis confirmed the presence of Zn-O, Mn-O, and Cu-O in the samples. The crystalline structure of the sample was analysed by XRD. The surface morphology of the prepared compounds was studied with SEM images. EDS technique was employed for ensuring the presence of Zn, Mn, and Cu elements in the samples. The results clearly showed S 1 , S 2 , and S 3 had high-antimicrobial activity especially for S 3 .

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Section: Resultsmentioning

confidence: 87%

Synthesis, characterisation, and antimicrobial activity of ZnO‐based nanocomposites

Faraji¹,

Hajimahdi²

2018

Micro & Nano Letters

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“…The copper and copper oxide nanoparticles were found to possess spherical shapes with an average size of 53 nm ( Table S10 ). Numerous researchers conducted FTIR characterization techniques on the extract solutions and nanostructures which found that the reduction in the metallic ions resulted from phytochemicals such as phenols, flavones, terpenoids, proteins, and other heterocyclic compounds present during the reaction [ 78 , 79 , 80 , 81 ]. Copper-based nanomaterial studies also indicated initial aggregation of the particles that increased over time [ 82 , 83 ].…”

Section: Green Synthesis Of Transitional Metals and Their Oxidesmentioning

confidence: 99%

Green Synthesis of Transition-Metal Nanoparticles and Their Oxides: A Review

2021

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In recent years, many researchers have begun to shift their focus onto the synthesis of nanomaterials as this field possesses immense potential that may provide incredible technological advances in the near future. The downside of conventional synthesis techniques, such as co-precipitation, sol-gel and hydrothermal methods, is that they necessitate the use of toxic chemicals, produce harmful by-products and require a considerable amount of energy; therefore, more sustainable fabrication routes are sought-after. Biological molecules have been previously utilized as precursors for nanoparticle synthesis, thus eliminating the negative factors involved in traditional methods. In addition, transition-metal nanoparticles possess a wide scope of applications due to their multiple oxidation states and large surface areas, thereby allowing for a higher reactivity when compared to their bulk counterpart and rendering them an interesting research topic. However, this field is still relatively unknown and unpredictable as the biosynthesis of these nanostructures from fungi, bacteria and plants yield undesired diameters and morphologies, rendering them as redundant when compared to their chemically synthesized counterparts. Therefore, this review aims to obtain a better understanding on the plant-mediated synthesis process of the major transition-metal and transition-metal oxide nanoparticles, and how process parameters—concentration, temperature, contact time, pH level, and calcination temperature affect their unique properties such as particle size, morphologies, and crystallinity.

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“…Catalysis has been explored and reported in the literature as a crucial and potentially useful topic for the efficient usage of biosynthetic CuO NPs [50]. For instance, Maham et al effectively manufactured CuO NPs using Euphorbi chamaesyce leaf extract and studied their catalytic reduction of 4-nitrophenol [51]. They discovered that within 180 s, CuO NPs could achieve 100% 4-nitrophenol removal.…”

Section: Introductionmentioning

confidence: 99%

In-Vitro Catalytic and Antibacterial Potential of Green Synthesized CuO Nanoparticles against Prevalent Multiple Drug Resistant Bovine Mastitogen Staphylococcus aureus

Ul‐Hamid

Dafalla

Hakeem

et al. 2022

IJMS

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Nanoparticles prepared from bio-reduction agents are of keen interest to researchers around the globe due to their ability to mitigate the harmful effects of chemicals. In this regard, the present study aims to synthesize copper oxide nanoparticles (CuO NPs) by utilizing root extracts of ginger and garlic as reducing agents, followed by the characterization and evaluation of their antimicrobial properties against multiple drug resistant (MDR) S. aureus. In this study, UV-vis spectroscopy revealed a reduced degree of absorption with an increase in the extract amount present in CuO. The maximum absorbance for doped NPs was recorded around 250 nm accompanying redshift. X-ray diffraction analysis revealed the monoclinic crystal phase of the particles. The fabricated NPs exhibited spherical shapes with dense agglomeration when examined with FE-SEM and TEM. The crystallite size measured by using XRD was found to be within a range of 23.38–46.64 nm for ginger-doped CuO and 26–56 nm for garlic-doped CuO. Green synthesized NPs of ginger demonstrated higher bactericidal tendencies against MDR S. aureus. At minimum and maximum concentrations of ginger-doped CuO NPs, substantial inhibition areas for MDR S. aureus were (2.05–3.80 mm) and (3.15–5.65 mm), and they were measured as (1.1–3.55 mm) and (1.25–4.45 mm) for garlic-doped NPs. Conventionally available CuO and crude aqueous extract (CAE) of ginger and garlic roots reduced MB in 12, 21, and 38 min, respectively, in comparison with an efficient (100%) reduction of dye in 1 min and 15 s for ginger and garlic doped CuO NPs.

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Biosynthesis of the CuO nanoparticles using Euphorbia Chamaesyce leaf extract and investigation of their catalytic activity for the reduction of 4‐nitrophenol

Cited by 29 publications

References 49 publications

Synthesis, characterisation, and antimicrobial activity of ZnO‐based nanocomposites

Synthesis, characterisation, and antimicrobial activity of ZnO‐based nanocomposites

Green Synthesis of Transition-Metal Nanoparticles and Their Oxides: A Review

In-Vitro Catalytic and Antibacterial Potential of Green Synthesized CuO Nanoparticles against Prevalent Multiple Drug Resistant Bovine Mastitogen Staphylococcus aureus

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