A new and effective chemical reduction method for preparation of nanosized silver powder and colloid dispersion

2003 ◽  
Vol 38 (6) ◽  
pp. 949-956 ◽  
Author(s):  
H.H. Nersisyan ◽  
J.H. Lee ◽  
H.T. Son ◽  
C.W. Won ◽  
D.Y. Maeng
Keyword(s):  
Reduction Method ◽  
Chemical Reduction ◽  
Silver Powder ◽  
Chemical Reduction Method ◽  
Colloid Dispersion

Synthesis of Mono-Dispersed Fine Spherical Silver Powders by Chemical Reduction Method

2007 ◽  
Vol 539-543 ◽  
pp. 2782-2786 ◽  
Author(s):  
Jong Gwan Ahn ◽  
Dong Jin Kim ◽  
Jae Ryeong Lee ◽  
H.S. Jung ◽  
Byoung Gyu Kim
Keyword(s):  
Reduction Method ◽  
Chemical Reduction ◽  
Silver Powder ◽  
Nitrate Solution ◽  
Particle Morphology ◽  
Silver Nitrate Solution ◽  
Phase Method ◽  
Metal Powders ◽  
Chemical Reduction Method ◽  
Liquid Phase Method

The synthesis of spherical silver powders by chemical reduction method was investigated. Conductive metal pastes to have good properties in adhesion, stability, and conductivity, it is very important to control the purity, size, and shape of metal particles. In the present study, proper methods to control the properties of micron sized metal powders for conductive pastes are investigated. Chemical reduction method in aqueous solution was adapted to produce silver powder. The effects of reaction time, concentration of reductant and additives, and stirring speed were investigated, in experimental. Fine spherical silver powder of 0.5 to 3 ㎛ were synthesized from silver nitrate solution with hydroquinone as a reducing additive by liquid phase method, and some variables and reaction mechanism in conjunction with the particle morphology and size were studied.

Effect of the mass ratio of micron and submicron silver powder in the front electrode paste on the electrical performance of crystalline silicon solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (34) ◽  
pp. 28289-28297 ◽  
Author(s):  
Hanying Wang ◽  
Yuping Tai ◽  
Ruixiao Li ◽  
Hui Wang ◽  
Jintao Bai
Keyword(s):  
Reduction Method ◽  
Crystalline Silicon ◽  
Chemical Reduction ◽  
Silver Powder ◽  
Electrical Performance ◽  
Silicon Solar Cells ◽  
Mass Ratio ◽  
Chemical Reduction Method ◽  
Crystalline Silicon Solar Cells ◽  
Front Electrode

In this paper, highly-dispersed spherical micron-sized (D50 = 2.94 μm) and submicron-sized (D50 = 0.59 μm) silver powders were prepared by a chemical reduction method.

Effects of Different Reducing Agents and Protective Agents on the Preparation of Nano-Silver Powder

2012 ◽  
Vol 512-515 ◽  
pp. 136-140
Author(s):  
Feng Rui Zhai ◽  
Yi Ming Liu ◽  
Zhong Zhou Yi ◽  
Hong Wei Zhang ◽  
Min Lu
Keyword(s):  
Reduction Method ◽  
Chemical Reduction ◽  
Silver Powder ◽  
High Surface ◽  
Reducing Agents ◽  
Reducing Agent ◽  
Protective Agent ◽  
Chemical Reduction Method ◽  
Protective Agents ◽  
Nano Silver

Solution chemical reduction method is a means which used reducing agent in aqueous or organic systems to deoxidize silver ions. Its essence is an integrated process of the electrochemistry, thermodynamics, kinetics and fluid dynamics and so on. The process determines the physical and chemical properties such as the size distribution of powder, purity and reunion situations, etc. Nano-silver powder has high surface activity and catalytic properties, and is widely used to a lot of fields. So it has very important realistic significance to study the preparation method. In this paper, nano-silver powder was prepared with industrial AgNO3 as raw materials, sodium borohydride or hydrazine hydrate as reducing agent, polyvinyl alcohol, SDBS or polyvinylpyrrolidone(PVP) as the surface protective agent by solution chemical reduction method. The influences of different reducing agents and protective agents on the preparation of nano-silver were analyzed. The results from the XRD diffraction analysis and TEM show that it can be obtained high purity flake nano-silver in the reaction temperature range of 50-60°C.

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. 

scholarly journals Synthesis of Cu core Ag shell nanoparticles using chemical reduction method

2015 ◽  
Vol 6 (2) ◽  
pp. 025018 ◽  
Author(s):  
Dung Chinh Trinh ◽  
Thi My Dung Dang ◽  
Kim Khanh Huynh ◽  
Eric Fribourg-Blanc ◽  
Mau Chien Dang
Keyword(s):  
Reduction Method ◽  
Chemical Reduction ◽  
Chemical Reduction Method ◽  
Shell Nanoparticles

Enhanced magnetic behavior of hydrogenated Fe and FeCo nanoparticles prepared by chemical reduction method

2020 ◽  
Author(s):  
Theertharaman G. ◽  
Nibin K. Mathew ◽  
Rohith K. Vinod ◽  
P. Saravanan ◽  
S. Balakumar
Keyword(s):  
Reduction Method ◽  
Chemical Reduction ◽  
Magnetic Behavior ◽  
Chemical Reduction Method ◽  
Feco Nanoparticles

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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