Opportunities from the nanoworld: Gas phase nanoparticles

Palasantzas, G.; Koch, S.A.; Vystavel, T.; Hosson, J.Th.M. De

doi:10.1016/j.jallcom.2006.01.127

Cited by 4 publications

(3 citation statements)

References 26 publications

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“…Nanoparticles possess unique optical, magnetic, electrical and chemical properties due to their high surface area to volume ratio, which makes them highly attractive for both the scientific and industrial community [1,2]. There is a specific interest in nickel (Ni) and nickel oxide (NiO) nanoparticles because of their electronic, magnetic and catalytic properties, as well as economic advantages in catalytic applications compared to noble metals [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Simple Preparation of Ni and NiO Nanoparticles Using Raffinate Solution Originated from Spent NiMH Battery Recycling

Ebin

2018

J Inorg Organomet Polym

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Nickel (Ni) and nickel oxide (NiO) nanoparticles were produced by a combination of precipitation and reduction/calcination methods using the raffinate solution originated from laboratory scale spent NiMH recovery process. Ni recovery from the solution reached 99.8% by a simple precipitation step using baking soda. X-ray diffraction, FTIR spectroscopy, carbon analyzer and thermal gravimetric analysis techniques were used to characterize the precipitate. Metallic and oxide nanoparticles were obtained by hydrogen reduction and calcination under air atmosphere of the precipitate at 400 °C, respectively for 30-90 min residence times. The crystal structure, crystallite size, morphology, particle size and surface area of the samples, as well as carbon residue content in the particles were detected by particle characterization methods. The results indicate that spherical Ni nanoparticles have a crystallite size about 37 nm, and particle sizes of around 100 nm. The agglomeration of the nanoparticles reduces by increasing residence time. NiO nanoparticles have finer crystallite and particle sizes than the metallic samples produced at the same temperature and residence times. The results show that the combination of the simple methods presented can be an alternative process for producing advanced particles from spent NiMH batteries.

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Section: Introductionmentioning

confidence: 99%

Simple Preparation of Ni and NiO Nanoparticles Using Raffinate Solution Originated from Spent NiMH Battery Recycling

Ebin

2018

J Inorg Organomet Polym

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“…21,22 Typically nonspherical particles are subject to extra lift forces in addition to the Brownian motion and lift forces during nozzle expansion, which effectively determine the minimum width of the particle beam. 23,24 and can therefore be assumed to be nonspherical however, the unique combination of aerodynamic lenses; an aperture downstream and a mass-selective quadrupole allows a particle beam of nonspherical clusters to be modeled as if it were an incompressible irrotational flow. This allows us to describe the system by the Reynolds number.…”

Section: Instrumentationmentioning

confidence: 99%

Enhanced capability in a gas aggregation source for magnetic nanoparticles

Iles

Baker

Thornton

et al. 2009

Journal of Applied Physics

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We describe the characterization of a high-temperature ͑2000 K͒ thermal gas aggregation source that is ultrahigh vacuum compatible and can cleanly deposit transition metal clusters with partial pressures of contaminants in the 10 −11 mbar range allowing codeposition with highly reactive matrices. In particular, we investigate the effect of varying ͑i͒ the bath gas pressure and composition on the size distribution and flux of clusters produced and ͑ii͒ the position of the crucible within the source. The mass spectra of Fe clusters produced, recorded using a quadrupole filter, show that changing the operating conditions and configuration of the source allow a wide range of cluster sizes-3000-320 000 amu ͑ϳ50-6000 atoms for Fe or Co͒ to be produced. We demonstrate the cleanliness of the source by producing uncontaminated Fe clusters in rare-earth matrices.

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“…Nanotechnology is a branch of science that dealt with the matter having at least 1-100 nm one dimension size and having the ability to engineer material by controlling its particle size (Palasantzas et al, 2008;Stark et al, 2015). The significant economic importance in the field of magnetic, electronic, and catalytic application of Nickel (Ni) and nickel oxide (NiO) nanoparticles have gained specific interest than the NPs of other noble metals (Cristino et al, 2020;Taiba & Tayyiba, 2021).…”

Section: Introductionmentioning

confidence: 99%

Suaeda maritima (L.) Dumort GREEN SYNTHESIS- REDUCED NICKEL OXIDE NANOPARTICLES FOR ANTIOXIDANT AND BACTERICIDAL ACTIVITY

Krishnasree

Peddi

2021

JEBAS

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A unique way, green, cost-effective, and direct fabrication method is proposed for the synthesis of Nickel Oxide Nanoparticles (NPs) in an eco-environmentally way through leaf extract of Suaeda maritima (L.) Dumort. The nickel oxide nanoparticles were synthesized using Nickel (II) nitrate hexahydrate as a metal source and aqueous leaf extract of S. maritima was utilized as a green reducing agent. The formation of NPs was monitored by the change in color in the reaction mixture and the synthesized NPs were characterized using UV-visible spectrophotometer, Fourier Transform infrared (FT-IR) spectroscopy, field emission scanning electron microscope (FE SEM), X-ray diffractometer (XRD), and energy-dispersive X-ray spectroscopy (EDX). Further, the antibacterial activity of synthesized NPs was carried using the agar plate well diffusion method and antioxidant activity by DPPH free radical scavenging activity of the NPs was studied. The UV-visible absorption spectra of nanoparticles show a characteristic maximum absorption peak centered at 397 nm. The functional group analysis by FT-IR confirms the presence of various bio-active functional groups in the synthesized particles. The structural characterization confirms that the particles were Face Centred Cubic lattice structure having IR-regular in shape and rough surface with average atomic weight percentages of 76.3%. The synthesized nanoparticles were found to be potent against the growth of gram-positive (Bacillus subtilis, Staphylococcus aureus) and gram-negative (Escherichia coli, Pseudomonas aeruginosa) bacteria. In the DPPH assay, the IC 50 values of the synthesized NPs were found to be 28.01 μg/mL which is very close to standard ascorbic acid (22.19 μg/mL) whereas the IC 50 of the aqueous plant leaf extract was found to be 47.30 μg/m confirms that the nanoparticles having enhanced antioxidant activity. From the results of the study it can be concluded that this protocol is simple, rapid, one step, eco-friendly, non-toxic for the synthesis of nickel nanoparticles.

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Opportunities from the nanoworld: Gas phase nanoparticles

Cited by 4 publications

References 26 publications

Simple Preparation of Ni and NiO Nanoparticles Using Raffinate Solution Originated from Spent NiMH Battery Recycling

Simple Preparation of Ni and NiO Nanoparticles Using Raffinate Solution Originated from Spent NiMH Battery Recycling

Enhanced capability in a gas aggregation source for magnetic nanoparticles

Suaeda maritima (L.) Dumort GREEN SYNTHESIS- REDUCED NICKEL OXIDE NANOPARTICLES FOR ANTIOXIDANT AND BACTERICIDAL ACTIVITY

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