Preparation of silver nanoparticles on the surface of fine magnetite particles by a chemical reduction

Lee, Boeun; Koo, Sangkyun

doi:10.1016/j.jiec.2011.05.030

Cited by 17 publications

(7 citation statements)

References 15 publications

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“…Because of the availability of promising sites on the Co-particles, a heterogeneous nucleation mechanism might occur making a way to the formation of AgNPs on the Co-cores [25,26,35]. Reduction of Ag + ions into metallic AgNPs on magnetic cores by virtue of anchoring sites was also reported by other researchers [7,20]. The final colours of all prepared colloidal samples are shown in figure 2 f .…”

Section: Resultsmentioning

confidence: 53%

“…The magnetic core-based nanocomposites can support to realize the effective recovery of the residual particles from the medium after successful application. Moreover, the decoration of AgNPs on the magnetic particles can also provide stability to their magnetic dispersion [7,19,20]. Magnetic materials, by virtue of their biocompatibility, low toxicity and capability to transform electromagnetic energy to heat, can be employed in different clinical procedures, e.g.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization of silver nanoparticle-decorated cobalt nanocomposites (Co@AgNPs) and their density-dependent antibacterial activity

et al. 2019

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Magnetic cores loaded with metallic nanoparticles can be promising nano-carriers for successful drug delivery at infectious sites. We report fabrication, characteristic analysis and in vitro antibacterial performance of nanocomposites comprising cobalt cores (Co-cores) functionalized with a varied concentration of silver nanoparticles (AgNPs). A two-step polyol process synchronized with the transmetalation reduction method was used. Co-cores were synthesized with cobalt acetate, and decoration of AgNPs was carried out with silver acetate. The density of AgNPs was varied by changing the amount of silver content as 0.01, 0.1 and 0.2 g in the synthesis solution. Both AgNPs and Co-cores were spherical having a size range of 30–80 nm and 200 nm to more than 1 µm, respectively, as determined by scanning electron microscopy. The metallic nature and face-centred cubic crystalline phase of prepared nanocomposites were confirmed by X-ray diffraction. Biocompatibility analysis confirmed high cell viability of MCF7 at low concentrations of tested particles. The antibacterial performance of nanocomposites (Co@AgNPs) against Escherichia coli and Bacillus subtilis was found to be AgNPs density-dependent, and nanocomposites with the highest AgNPs density exhibited the maximum bactericidal efficacy. We therefore propose that Co@AgNPs as effective drug containers for various biomedical applications.

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Section: Resultsmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of silver nanoparticle-decorated cobalt nanocomposites (Co@AgNPs) and their density-dependent antibacterial activity

et al. 2019

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“…The core–shell nanoparticles, the core of which is made of magnetite and the shell of which is prepared from noble metals [ 13 ], polymers [ 14 , 15 , 16 ], or functional organic layers [ 17 , 18 ], possess unique magnetic properties accompanied by additional features such as optical responsive layers or bio function or specific reactivity, which is achieved due to the presence of hybrid particle core–shell morphology [ 19 , 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Stability Studies of Magnetite Nanoparticles in Environmental Solutions

et al. 2021

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In the presented paper, studies of magnetite nanoparticle stability in selected environmental solutions are reported. The durability tests were performed in four types of liquids: treated and untreated wastewater, river water, and commercial milk (0.5% fat). Nanoparticles before and after deposition in the testing conditions were measured by transmission electron microscopy, X-ray diffraction, infrared spectroscopy, and Mössbauer spectroscopy. The amount of Fe atoms transferred into the solutions was estimated on the basis of flame atomic absorption spectroscopy. The analysis of the obtained results shows good stability of the tested nanoparticles in all water solutions. They do not change their structure or magnetic properties significantly, which makes them a good candidate to be used as, for example, detectors of specific compounds or heavy metals. On the other hand, studies show that particles are stable in environmental conditions for a long period of time in an unchanged form, which can cause their accumulation; therefore, they may be hazardous to living organisms.

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“…31,36 When deposited as a conductive coating layer on a stretchable polymer substrate, the metal nanoparticles experienced the stress-induced nanoparticle reorganization upon deformation, maintaining high electrical conductivity. 37 Conventional methods to synthesize AgNPs include electrical arc discharge, 38–40 photoreduction, 41,42 and chemical reduction, 43–46 etc . Among them, the chemical reduction method is the most common way in which silver nitrate generally is used as the metal precursor, and the reducing agents of glucose, trisodium citrate, hydroxylamine hydrochloride, and hydrazine hydrate are selected.…”

Section: Nano-conductive Materials For Stretchable and Flexible Elect...mentioning

confidence: 99%

Advances in constructing silver nanowire-based conductive pathways for flexible and stretchable electronics

2022

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Preparation of silver nanoparticles on the surface of fine magnetite particles by a chemical reduction

Cited by 17 publications

References 15 publications

Synthesis and characterization of silver nanoparticle-decorated cobalt nanocomposites (Co@AgNPs) and their density-dependent antibacterial activity

Synthesis and characterization of silver nanoparticle-decorated cobalt nanocomposites (Co@AgNPs) and their density-dependent antibacterial activity

Stability Studies of Magnetite Nanoparticles in Environmental Solutions

Advances in constructing silver nanowire-based conductive pathways for flexible and stretchable electronics

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