Synthesis of CuO and Ag doped CuO nanoparticles from &lt;i&gt;Muntingia calabura&lt;/i&gt; leaf extract and evaluation of their antimicrobial potential

Kumar, Kiran Prem; Dinesh, N. D.; Murari, Satish Kumar

doi:10.1504/ijnbm.2019.104939

Cited by 17 publications

(7 citation statements)

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“…However, it may depend upon several factors such as properties of synthesized CuO NPs, type of bacteria, experimental conditions, treatment dose of Cu NPs, etc. The antimicrobial activities of Ag-doped CuO NPs against different bacteria have been reported previously [6,9,[16][17][18][19]. In the current study, the effect of Ag doping on the antibacterial activity of CuO NPs has been investigated against gram -ve E. coli and gram +ve E. faecalis.…”

Section: Introductionmentioning

confidence: 69%

“…With an increasing temperature, the colour of the precipitate gradually moved into dark brown, indicating dehydration of copper sulphateand formation of CuO NPs. After Ag doping, the change in the colour of the precipitate was not observed but appeared to have a consecutive impact on the CuO NPs growth rate [9]. The Ag ions are adsorbed on the CuO basal planes and thus alter surface properties, for example, relative surface free energy on the facets; these results in preventing and blocking the incorporation of other molecules from solution into the CuO crystal lattice and thus slow down the growth in a particular direction [28].…”

Section: Effect Of Ag Doping On Cuo Nps Synthesismentioning

confidence: 99%

“…CuO NPs have applications in areas such as photocatalysis, solar cells, gas sensors, batteries, electronic devices, medicine (anticancer, antimicrobial potentials), etc [8]. CuO NPs could be the source of cost-effective antimicrobial agents compared to Ag NPs and Au NPs [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers reported such changes in the properties of CuO NPs after doping with transition metal ions such as Mg [13], Mn [14], and Ag [15]. Adding metal dopants promotes the antimicrobial properties of CuO NPs [6,9]. Ag and CuO NPs offer a wide range of biomedical applications [16].…”

Section: Introductionmentioning

confidence: 99%

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Effect of silver (Ag) doping on structural, optical and antimicrobial properties of copper oxide (CuO) nanostructures

Vikal

Kumar

et al. 2023

Nano Ex.

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The present report investigates the effect of Ag doping on the structural, optical, and antimicrobial properties of CuO NPs. CuO NPs were produced at optimized reaction conditions via hydrothermal synthesis. XRD study reveals a decrease in crystallite size with an increase in Ag doping concentration (2-6 wt %) in CuO. Ag-doped CuO NPs shows lower band gap values as compared to undoped CuO NPs. FESEM analysis displays pure CuO NPs with spherical pellet-like structures, while Ag-doped CuO NPs have mixed morphologies, i.e., spherical, disc-like, and irregular shapes. EDX spectra confirms the purity of synthesized CuO NPs. Further, the antimicrobial properties of CuO nanostructures were studied against E. coli and E. faecalis bacteria. CuO NPs functionalized with Ag dopant exhibits significant antibacterial potentials. The antibacterial activity of CuO NPs increased with increasing dopant concentration and in a dose-dependent manner. The gram +ve E. faecalis is more sensitive to the Ag-doped CuO NPs treatment than a gram –veE. coli. Overall, the study demonstrates a facile route of synthesizing Ag-doped CuO NPs that can materialize into effective bactericidal agents against a wide range of gram +ve and gram –ve bacteria.

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Section: Introductionmentioning

confidence: 69%

Section: Effect Of Ag Doping On Cuo Nps Synthesismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of silver (Ag) doping on structural, optical and antimicrobial properties of copper oxide (CuO) nanostructures

Vikal

Kumar

et al. 2023

Nano Ex.

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“…The flowering plant that attracts bees of the genus Amegilla is the cherry. Kersen has the pollen needed by Amegilla [59], and the cherry blossoms' color is white, which is the favorite color of Amegilla bees [60]. Although bees from the genus Amegilla like white flowers, these bees do not visit euphorbia or Bougainville flowers because the flowers found on these plants in residential areas are not white.…”

Section: Results and Discussion The Diversity Level (H') And Dominanc...mentioning

confidence: 99%

Diversity and abundance of bees (Hymenoptera: Apidae) in the campus 4 of Ahmad Dahlan University

2022

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Land conversion around campus 4 of Ahmad Dahlan University Yogyakarta affects the diversity and abundance of pollinating insects, one of which is bees. The purpose of this study was to calculate the level of diversity and abundance of bees on campus 4 UAD and its surroundings. The sampling area consisted of 4 plots, with each plot measuring 1750 m2( 35 m x 50 m) determined using the observation method. Sampling was carried out three times, which was carried out in the morning at 07.00 – 11.00 and continued in the afternoon at 15.00 – 17.00. Bees were identified by comparing their morphological characters with identification reference books and journals. The Spearman correlation test then analyzed the bee abundance data and abiotic factors. The results showed that the level of bee diversity on campus 4 UAD and its surroundings was moderate (1 H' 3). The most abundant bee species was Xylocopa aestuan, with 118 individuals, and the least abundant was Apis mellifera, with 7 individuals. The conclusion of this study is the state of the ecosystem on campus 4 UAD and its surroundings, there is a disturbance in the form of land use change, but bees can still tolerate the disturbance.

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Evaluation of Structural, Morphological, Optical and Bactericidal Action of Branched Sm‐Doped CuO Nano‐Lanceolates

Franklin Rajesh,

Jeyakumar,

Sahaya Jude Dhas

et al. 2024

ChemistrySelect

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Over the years, metal oxides have been leveraged to create several intriguing novel antibacterial active materials such that while finding the ways and means to increase efficiency, rare earth elements are found to have often served as potential optical dopants such that an optimistic en route to achieve the same, branched Sm‐doped CuO nano‐lanceolates were synthesized employing a wet chemical approach. The samples were then annealed at three distinct temperatures, which were fixed to 300 °C, 400 °C, and 500 °C. The nano‐lanceolates have crystallized in the monoclinic phase, according to the XRD analysis. The SEM image of Sm‐doped CuO captured at a magnification of 2 μm reveals a branched morphology, with multiple nano‐lanceolates stacked in a stem. TEM image reveals that the width of a typical nano‐lanceolate attached to a stem and its tip are found to be 87 nm and 212 nm, respectively and the obtained EDS data validate that elements including Cu, Sm, and O are present in the doped sample. The UV‐visible spectra of the annealed samples indicate that the sample annealed at 300 °C (1.43 eV) has a larger band gap than the other samples. The sample that was annealed at 400 °C has endured defect emissions that are more intense than those of other samples, according to the obtained PL spectra. In addition to these fascinating findings, the samples annealed at 300 °C, 400 °C and 500 °C exhibit a zone of inhibition of 23 mm & 24 mm, 11 mm & 12 mm and 12 mm & 11 mm, respectively for the two tested bacterial strains which authenticate that the 300 °C annealed Sm‐doped CuO nano‐lanceolate deactivates the two pathogenic bacteria more effectively compared to the other samples. As a consequence, the Sm‐doped CuO nano‐lanceolates at 300 °C could potentially be an effective alternative for antibacterial materials, particularly in biomedical applications

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Synthesis of CuO and Ag doped CuO nanoparticles from <i>Muntingia calabura</i> leaf extract and evaluation of their antimicrobial potential

Cited by 17 publications

References 0 publications

Effect of silver (Ag) doping on structural, optical and antimicrobial properties of copper oxide (CuO) nanostructures

Effect of silver (Ag) doping on structural, optical and antimicrobial properties of copper oxide (CuO) nanostructures

Diversity and abundance of bees (Hymenoptera: Apidae) in the campus 4 of Ahmad Dahlan University

Evaluation of Structural, Morphological, Optical and Bactericidal Action of Branched Sm‐Doped CuO Nano‐Lanceolates

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