On the non‐thermal plasma synthesis of nickel nanoparticles

Abstract

Nickel (Ni) nanoparticles have been synthesized from the dissociation of nickelocene (Ni(Cp)2) in an argon‐hydrogen (Ar‐H2) low pressure continuous‐flow non‐thermal plasma. The influence of process parameters on the synthesized Ni nanomaterial structure, size, size‐dispersion, and carbon content has been characterized by EDS and TEM analysis. The role of hydrogen dilution and plasma input power on material throughput is carefully discussed. These data, in combination with the prediction of the electron affinity and ionization potential of Ni(Cp)2 by DFT calculations, supports the hypothesis that the material loss‐mechanism to the reactor walls is due to the inherent ambipolar diffusion present in this synthesis technique. This study suggests that precursors should be screened with care when attempting to produce nanoparticle via a low pressure, continuous flow plasma reactor.

A plasma‐based gas‐phase method for synthesis of gold nanoparticles

“…We performed STEM combined with energy dispersive X‐ray spectroscopy (EDS) to further confirm the presence of Au and to measure possible contamination—which we did not observe (Figure ) . The EDS peaks aside from Au are from Copper (Cu) and Carbon (C), both likely from the carbon‐coated copper TEM grid we used.…”

“…Preexisting methods in gas phase include inert gas condensation, spark ignition, plasma sputtering, and hot‐wire synthesis . Recently, several groups have turned to flow‐through plasma synthesis of metallic NPs and nanostructured films . The advantages to these plasma‐based methods are a relatively narrow size distribution and continuous synthesis.…”

Spark discharges in liquid heptane in contact with silver nitrate solution: Investigation of the synthesized particles

“…[13] Recently, plasma-based methods have shown great potential for use in the synthesis of nanomaterials via bottom-up or top-down approaches. [14][15][16][17] For example, the plasma torch is a wellknown technique that is used to produce various types of nanomaterials, such as silicon oxide, [18] titanium oxide, [19] carbon nanotubes, and iron oxide, [20] among others, [21,22] by processing solid, [23] liquid, [24] or suspension [25] precursors. Laser ablation is another well-known technique that can be applied in gaseous environments, [26][27][28] as well as in liquids.…”

Cytotoxic activity of Green Zinc Selenide Nanoparticles Against Hep-G2 Cell Lines

“…Non-thermal plasma processing techniques have emerged as promising all-gas phase protocols for synthesizing a wide range of NPs, including semiconductors, metal oxides, ceramics, and more complex core-shell nanostructures among a variety of potential candidates 7,8 .Therefore, the preparation of ZnSe-NPs was needed with cold plasma and (core-shell) methods to reduce toxicity in an easy, green, economic and environmental manner. There is growing interest in the use of plasma for biomedical applications, especially under the so-called 'plasmadrug' to take advantage of the action of low-power, air-pressure plasmas for therapeutic purposes 9,10 .We have studied the feasibility of the synthesis of ZnSe NPs with an aqueous solution extracted from Milk Thistle seeds.…”