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Ag+ reduction and silver nanoparticle synthesis at the plasma–liquid interface by an RF driven atmospheric pressure plasma jet: Mechanisms and the effect of surfactant

Journal Article · · Journal of Vacuum Science and Technology A
DOI:https://doi.org/10.1116/1.4995374· OSTI ID:1373691
Here, the involvement of plasma produced species in the reduction of silver ions at the plasma–liquid interface is investigated using a well-characterized radio-frequency driven atmospheric pressure plasma jet. The absolute gas phase H density was measured using two photon absorption laser induced fluorescence in the free jet. Broadband absorption and transmission electron microscopy were used to study the synthesis of silver nanoparticles (AgNPs). It is shown that fructose, an often used surfactant/stabilizer for AgNP synthesis, also acts as a reducing agent after plasma exposure. Nonetheless, surfactant free AgNP synthesis is observed. Several experimental findings indicate that H plays an important role in the reduction of silver ions for the plasma conditions in this study. Vacuum ultraviolet photons generated by the plasma are able to reduce silver ions in the presence of fructose. Adding H2 to the argon feed gas leads to the production of a large amount of AgNPs having a particle size distribution with a maximum at a diameter of 2–3 nm, which is not observed for argon plasmas. This finding is consistent with a smaller concentration of reducing species at the plasma–liquid interface for Ar with the H2 admixture plasma. The smaller flux of reactive species to the liquid is in this case due to a less strong interaction of the plasma with the liquid. The formation of the nanoparticles was observed even at a distance of 6–7 mm below the tip of the plasma plume, conditions not favoring the injection of electrons.
Research Organization:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0001939
OSTI ID:
1373691
Alternate ID(s):
OSTI ID: 1372136
Journal Information:
Journal of Vacuum Science and Technology A, Journal Name: Journal of Vacuum Science and Technology A Journal Issue: 6 Vol. 35; ISSN 0734-2101
Publisher:
American Vacuum SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (16)

Pulse-Modulated Radio-Frequency Alternating-Current-Driven Atmospheric-Pressure Glow Discharge for Continuous-Flow Synthesis of Silver Nanoparticles and Evaluation of Their Cytotoxicity toward Human Melanoma Cells journal June 2018
Antibacterial Activity of Fructose-Stabilized Silver Nanoparticles Produced by Direct Current Atmospheric Pressure Glow Discharge towards Quarantine Pests journal September 2018
Microplasmas for Advanced Materials and Devices journal December 2019
Plasma‐induced precipitation of metal ions in aqueous solutions journal September 2019
Production of antimicrobial silver nanoparticles modified by alkanethiol self‐assembled monolayers by direct current atmospheric pressure glow discharge generated in contact with a flowing liquid anode journal June 2019
Absolute spatially and time‐resolved O, O 3 , and air densities in the effluent of a modulated RF‐driven atmospheric pressure plasma jet obtained by molecular beam mass spectrometry journal December 2019
Helium plasma jet interactions with water in well plates journal December 2019
The effect of hydrogen peroxide concentration on the partial oxidation of methane to methanol in an atmospheric dielectric barrier discharge journal December 2018
Interaction and transfer of charged particles from an alternating current glow discharge in liquids: Application to silver nanoparticle synthesis journal February 2019
On the quantification of the dissolved hydroxyl radicals in the plasma-liquid system using the molecular probe method journal March 2018
Formation of metal (nano-)particles in drying latex films by means of a reducing plasma: a route to auto-stratification journal May 2018
Penetration of Ar and He RF-driven plasma jets into micrometer-sized capillary tubes journal August 2018
Ethanol-controlled peroxidation in liquid-anode discharges journal August 2019
The formation pathways of aqueous hydrogen peroxide in a plasma-liquid system with liquid as the cathode journal August 2018
Effect of Competing Oxidizing Reactions and Transport Limitation on the Faradaic Efficiency in Plasma Electrolysis journal January 2019
Tuning the Formation Process of Silver Nanoparticles in a Plasma Electrochemical System by Additives journal January 2018

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