Preparation of nonaggregated silver nanoparticles by the liquid phase plasma reduction method

2013 ◽  
Vol 28 (8) ◽  
pp. 1105-1110 ◽  
Author(s):  
Heon Lee ◽  
Sung Hoon Park ◽  
Sang-Chul Jung ◽  
Je-Jung Yun ◽  
Sun-Jae Kim ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Liquid Phase ◽  
Reduction Method ◽  
Liquid Phase Plasma ◽  
Image Position ◽  
Plasma Reduction

Abstract

Synthesis Process of Copper/Graphene Nanocomposite by the Liquid Phase Plasma Reduction Method

2016 ◽  
Vol 16 (2) ◽  
pp. 2080-2083
Author(s):  
Sang-Chai Kim ◽  
Young-Kwon Park ◽  
Minchul Chung ◽  
Ho-Geun Ahn ◽  
Heon Lee ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Reduction Method ◽  
Synthesis Process ◽  
Graphene Nanocomposite ◽  
Liquid Phase Plasma ◽  
Plasma Reduction

Investigation on Sized-Regulated Iron Nanoparticles Prepared by Liquid Phase Plasma Reduction Process

2015 ◽  
Vol 15 (1) ◽  
pp. 518-521 ◽  
Author(s):  
Lee Heon ◽  
Hwan-Gi Kim ◽  
Byung Hoon Kim ◽  
Je-Jung Yun ◽  
Minchul Chung ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Iron Nanoparticles ◽  
Reduction Process ◽  
Liquid Phase Plasma ◽  
Plasma Reduction

The Preparation of High Concentration Silver Nanoplates with Liquid-Phase Reduction Method

2013 ◽  
Vol 562-565 ◽  
pp. 627-631
Author(s):  
Ji Lan Fu ◽  
Li Xin Mo ◽  
Ya Ling Li ◽  
Wei Wei Li ◽  
Wen Bo Li ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Liquid Phase ◽  
Reduction Method ◽  
Deionized Water ◽  
Molar Ratio ◽  
Plasmonic Nanostructures ◽  
High Concentration ◽  
Nano Silver ◽  
Silver Nanoplates ◽  
Phase Reduction

Silver nanoplates, also referred to as nanoprisms or nanodisks, are two-dimensional plasmonic nanostructures that have attracted intensive attention due to their strong shape-dependent optical properties and related applications. In order to obtain the silver nanoplates with high concentration, the liquid-phase reduction method was adopted. Silver nanoparticles colloid was obtained by reducing the high molar concentration of AgNO3 (up to 3.17 M) with the hydrazine hydrate (H4N2 • H2O) as reductant in the presence of polyethylene pyrrole (PVP) as the protectant. 0.5 M Sodium Citrate is introduced into the precursor aqueous which containing AgNO3 and PVP, the molar ratio of PVP to AgNO3 was tuned from 0.64 to 1.5. When molar is 1.5, the mainly particles are silver nanospheres, on the contrary, the nanospheres are transferred into nanoplates as the ratio decreased gradually, until the mainly product are nanoplates. The constituent of the silver nano-clusters was established by performing the Powder X-ray diffraction. The nano-silver dispersion with average diameter is about 113.2 nm were finally deserved. The size distribution of the silver nanoparticles is recorded by the Zeta potential analyzer. Scanning electron microscope (SEM) was used to characterize the morphology of the nano-silver particles. The silver content is about 3%. Nano-silver colloid is obtained and purified by centrifugation and wash with deionized water and ethanol. Then, water-based silver conductive ink is obtained by adding some amount deionized water and additives and adjusted parameters, which could be widely used in printed electronics.

Antimicrobial Activity of Silver Nanoparticles Prepared Under an Ultrasonic Field

2011 ◽  
Vol 4 (3) ◽  
pp. 1491-1496
Author(s):  
Umadevi M ◽  
Rani T ◽  
Balakrishnan T ◽  
Ramanibai R
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Reduction Method ◽  
Therapeutic Potential ◽  
Chemical Reduction ◽  
Ultrasonic Field ◽  
Great Promise ◽  
Chemical Reduction Method ◽  
E Coli

Nanotechnology has great promise for improving the therapeutic potential of medicinal molecules and related agents. In this study, silver nanoparticles of different sizes were synthesized in an ultrasonic field using the chemical reduction method with sodium borohydride as a reducing agent. The size effect of silver nanoparticles on antimicrobial activity were tested against the microorganisms Staphylococcus aureus (MTCC No. 96), Bacillus subtilis (MTCC No. 441), Streptococcus mutans (MTCC No. 497), Escherichia coli (MTCC No. 739) and Pseudomonas aeruginosa (MTCC No. 1934). The results shows that B. subtilis, and E. coli were more sensitive to silver nanoparticles and its size, indicating the superior antimicrobial efficacy of silver nanoparticles. 

Testing of photocatalytic potential of silver nanoparticles produced through nonthermal plasma reduction reaction and stabilized with saccharides

2021 ◽  
pp. 1-14
Author(s):  
N.U.H. Altaf ◽  
M.Y. Naz ◽  
S. Shukrullah ◽  
H.N. Bhatti
Keyword(s):  
Silver Nanoparticles ◽  
Band Gap ◽  
Light Exposure ◽  
Argon Plasma ◽  
Silver Ions ◽  
Reduction Reaction ◽  
Diameter Distribution ◽  
Light Spectrum ◽  
Plasma Reduction ◽  
Narrow Diameter Distribution

In this study, silver nanoparticles (AgNPs) were produced through an atmospheric pressure plasma reduction reaction and tested for photodegradation of methyl blue (MB) under sunlight exposure. The argon plasma born reactive species were used to reduce silver ions to AgNPs in the solution. Glucose, fructose and sucrose were also added in the solution to stabilize the growth process. The glucose stabilized reaction produced the smallest nanoparticles of 12 nm, while sucrose stabilized reaction produced relatively larger nanoparticles (14 nm). The nanoparticles exhibited rough morphology and narrow diameter distribution regardless of stabilizer type. The narrow diameter distribution and small band gap helped activating majority of nanoparticles at a single wavelength of light spectrum. The band gap energy of AgNPs varied from 2.22 eV to 2.41 eV, depending on the saccharide type. The photoluminescence spectroscopy of AgNPs produced emission peaks at 413 nm, 415 nm, and 418 nm. The photocatalytic potential of AgNP samples was checked by degrading MB dye under sunlight. The degradation reaction reached a saturation level of 98% after 60 min of light exposure.

scholarly journals Using a non-reducing sugar in the green synthesis of gold and silver nanoparticles by the chemical reduction method

DYNA ◽  
2018 ◽  
Vol 85 (206) ◽  
pp. 69-78 ◽  
Author(s):  
Wilson Agudelo ◽  
Yuliet Montoya ◽  
John Bustamante
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Reducing Sugar ◽  
Chemical Reduction Method ◽  
Gold And Silver Nanoparticles ◽  
Uv Visible

El uso de compuestos químicos más biocompatibles y renovables para la obtención de nanopartículas metálicas con propiedades y características deseadas, se convierte en una ruta alternativa para la reducción de riesgos ambientales y del grado de incompatibilidad de estas estructuras al interactuar con modelos biológicos para su posible aplicación en el área de la salud. El propósito de este trabajo se centró en el uso de sacarosa, como agente reductor de nanopartículas de oro y plata al emplear diferentes volúmenes de hidróxido de sodio. Las nanopartículas obtenidas fueron caracterizadas mediante espectrometría UV-visible, microscopía electrónica de transmisión TEM y espectroscopia infrarroja por transformada de Fourier FTIR, la cual permitió determinar los plasmones de resonancia superficial, tamaños de partícula experimentales y teóricos, morfología y cambios estructurales en el agente reductor, así como la influencia del hidróxido de sodio en el proceso de síntesis. Los resultados obtenidos confirman la formación de nanopartículas de oro y plata mediante la previa formación de azúcares reductores. Así mismo, la oxidación del grupo funcional de la glucosa a sales de ácido carboxílico.

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