Synthesize of Silver Nanoparticles by Arc Discharge Method Using Two Different Rotational Electrode Shapes

El‐Khatib, Ahmed M.; Badawi, Mohamed S.; Ghatass, Z. F.; Mohamed, Moustafa M.; El-Khatib, Mostafa

doi:10.1007/s10876-018-1430-2

Cited by 46 publications

(22 citation statements)

References 26 publications

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“…Figure 2 a shows the Transmission Electron Microscope (TEM) image of Ag NPs previously synthesized in our lab and reported in ref. [ 22 ], of spherical grain shape along with average size of around 20 nm. Figure 2 b shows the SEM image of the formed nanofibers mat, with a mean diameter of nanofibers of less than 100 nm, which offers a better effect of Ag NPs to bacteria due to the higher surface-to-volume ratio.…”

Section: Resultsmentioning

confidence: 99%

“…A magnetic gun was used to generate magnetic impulses of 50% duty cycle based on an input interrupted current of 80 mA through a Helmholtz coil of 445 turns each and total resistance of 6.8 ohms. The pulsed magnetic waves were directed by the gun to the exposure chamber where the samples were placed at the midpoint between the two sets of Helmholtz coils, 10 cm apart [ 22 , 23 ]. The magnetic field intensity was measured at the point at which samples were placed and confirmed to be 0.32 mT by using a Gauss/Tesla meter model 4048 with probe T-4048.001 (USA) of accuracy ±2%.…”

Section: Methodsmentioning

confidence: 99%

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Antibacterial Synergism of Electrospun Nanofiber Mats Functioned with Silver Nanoparticles and Pulsed Electromagnetic Waves

et al. 2021

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The over-reliance on antibiotics and their enormous misuse has led to warnings of a future without effective medicines and so, the need for alternatives to antibiotics has become a must. Non-traditional antibacterial treatment was performed by using an aray of nanocomposites synergised with exposure to electromagnetic waves. In this manuscript, electrospun poly(vinyl alcohol) (PVA) nanofiber mats embedded with silver nanoparticles (Ag NPs) were synthesized. The nanocomposites were characterized by Transmission Electron Microscope (TEM), Scanning Electron Microscope (SEM), Current-Voltage (I-V) curves, and Thermogravimetric analysis (TGA) along with analysis of antibacterial impact against E. coli and S. aureus bacteria, studied by bacterial growing analysis, growth kinetics, and cellular cytotoxicity. The results indicated a spherical grain shape of silver of average size 20 nm and nanofibers’ mean diameter of less than 100 nm. The nanocomposite mats showed good exposure to bacteria and the ability to sustain release of silver for a relatively long time. Moreover, the applied electromagnetic waves (EMWs) were shown to be a synergistic co-factor in killing bacteria even at low concentrations of Ag NPs. This caused pronounced alterations of the bacterial preserved packing of the cell membrane. Thereby, the treatment with nanocomposite mats under EM wave exposure elucidated maximum inhibition for both bacterial strains. It was concluded that the functioning of nanofiber with silver nanoparticles and exposure to electromagnetic waves improved the antibacterial impact compared to each one alone.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Antibacterial Synergism of Electrospun Nanofiber Mats Functioned with Silver Nanoparticles and Pulsed Electromagnetic Waves

et al. 2021

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“…Creation, exploitation and synthesis are nanotechnology concepts that typically consider materials smaller than 1 mm in dimension [10]. Many different methods, such as physical, chemical and green (biological) techniques, have been used to synthesize nanoparticles [11][12][13]. The stabilized nanoparticles are formed by reducing in dimension [10].…”

Section: Introductionmentioning

confidence: 99%

Green Nanotechnology: Plant-Mediated Nanoparticle Synthesis and Application

et al. 2022

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The key pathways for synthesizing nanoparticles are physical and chemical, usually expensive and possibly hazardous to the environment. In the recent past, the evaluation of green chemistry or biological techniques for synthesizing metal nanoparticles from plant extracts has drawn the attention of many researchers. The literature on the green production of nanoparticles using various metals (i.e., gold, silver, zinc, titanium and palladium) and plant extracts is discussed in this study. The generalized mechanism of nanoparticle synthesis involves reduction, stabilization, nucleation, aggregation and capping, followed by characterization. During biosynthesis, major difficulties often faced in maintaining the structure, size and yield of particles can be solved by monitoring the development parameters such as temperature, pH and reaction period. To establish a widely accepted approach, researchers must first explore the actual process underlying the plant-assisted synthesis of a metal nanoparticle and its action on others. The green synthesis of NPs is gaining attention owing to its facilitation of the development of alternative, sustainable, safer, less toxic and environment-friendly approaches. Thus, green nanotechnology using plant extract opens up new possibilities for the synthesis of novel nanoparticles with the desirable characteristics required for developing biosensors, biomedicine, cosmetics and nano-biotechnology, and in electrochemical, catalytic, antibacterial, electronics, sensing and other applications.

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“…The arc discharge technique is another example of nanoparticles synthesized within the top-down approach. It is widely used and simple to synthesize nanometal particles [ 41 ]. One another application of this technique is the synthesis of 2D nanomaterials in arc plasmas [ 42 ].…”

Section: Brief Review Of Nanomaterials Discovery Approachesmentioning

confidence: 99%

Data-Centric Architecture for Self-Driving Laboratories with Autonomous Discovery of New Nanomaterials

et al. 2021

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Artificial intelligence (AI) approaches continue to spread in almost every research and technology branch. However, a simple adaptation of AI methods and algorithms successfully exploited in one area to another field may face unexpected problems. Accelerating the discovery of new functional materials in chemical self-driving laboratories has an essential dependence on previous experimenters’ experience. Self-driving laboratories help automate and intellectualize processes involved in discovering nanomaterials with required parameters that are difficult to transfer to AI-driven systems straightforwardly. It is not easy to find a suitable design method for self-driving laboratory implementation. In this case, the most appropriate way to implement is by creating and customizing a specific adaptive digital-centric automated laboratory with a data fusion approach that can reproduce a real experimenter’s behavior. This paper analyzes the workflow of autonomous experimentation in the self-driving laboratory and distinguishes the core structure of such a laboratory, including sensing technologies. We propose a novel data-centric research strategy and multilevel data flow architecture for self-driving laboratories with the autonomous discovery of new functional nanomaterials.

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Synthesize of Silver Nanoparticles by Arc Discharge Method Using Two Different Rotational Electrode Shapes

Cited by 46 publications

References 26 publications

Antibacterial Synergism of Electrospun Nanofiber Mats Functioned with Silver Nanoparticles and Pulsed Electromagnetic Waves

Antibacterial Synergism of Electrospun Nanofiber Mats Functioned with Silver Nanoparticles and Pulsed Electromagnetic Waves

Green Nanotechnology: Plant-Mediated Nanoparticle Synthesis and Application

Data-Centric Architecture for Self-Driving Laboratories with Autonomous Discovery of New Nanomaterials

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