scholarly journals Large-Scale Synthesis of Silver Nanoparticles by Aqueous Reduction for Low-Temperature Sintering Bonding

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Qiu Xiliang ◽  
Cao Yang ◽  
Lin Tiesong ◽  
He Peng ◽  
Wang Jun ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Low Temperature ◽  
Reaction Temperature ◽  
Large Scale ◽  
Reduction Process ◽  
Average Diameter ◽  
Influential Factors ◽  
Low Temperature Sintering ◽  
Mass Ratio ◽  
Sintering Characteristics

Silver nanoparticles with average diameter of 22.4 nm were prepared by aqueous reduction method for low-temperature sintering bonding application. The reaction temperature and PVP concentration, which are the influential factors of nanoparticle characteristics, were investigated during reduction process. In our research, monodispersity of nanoparticles was remarkably improved while unfavorable agglomeration was avoided with the AgNO3/PVP mass ratio of 1 : 4 at the reaction temperature 30°C. Besides, copper pads were successfully bonded using sintering paste employing fresh silver nanoparticles with diameter of 20~35 nm at 200°C. In addition, after morphology of the bonding joint was analysed by scanning electron microscope (SEM), the porous sintering characteristics were confirmed.

Low-temperature sintering of silver nanoparticles on paper by surface modification

2019 ◽  
Vol 30 (50) ◽  
pp. 505303 ◽  
Author(s):  
Ling Zhang ◽  
Pengdong Feng ◽  
Senpei Xie ◽  
Yong Wang ◽  
Ziheng Ye ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Surface Modification ◽  
Low Temperature ◽  
Low Temperature Sintering

scholarly journals Mechanism of Low Temperature Sintering-Bonding through In-Situ Formation of Silver Nanoparticles Using Silver Oxide Microparticles

2013 ◽  
Vol 54 (6) ◽  
pp. 872-878 ◽  
Author(s):  
Fengwen Mu ◽  
Zhenyu Zhao ◽  
Guisheng Zou ◽  
Hailin Bai ◽  
Aiping Wu ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Low Temperature ◽  
Silver Oxide ◽  
Low Temperature Sintering

High Pressure / Low Temperature Sintering of Nanostructured Titania by Internal Heating Method

2006 ◽  
Vol 317-318 ◽  
pp. 255-258 ◽  
Author(s):  
Ching Hua Chiang ◽  
Kook D. Pae ◽  
Chung Hsin Lu
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
Large Scale ◽  
Graphite Furnace ◽  
Cylindrical Sample ◽  
Aluminum Silicate ◽  
Low Temperature Sintering ◽  
Internal Heating ◽  
Heating Method ◽  
Average Grain Size

The feasibility of an internal heating method for the fabrication of large-scale nanostructured TiO2 samples by high pressure/low temperature sintering is studied. The primary apparatus used is a piston-cylinder type. The arrangement inside the die cavity consists of a circular cylindrical green compact, a graphite furnace to heat the sample, an aluminum container to protect the sample and an aluminum silicate or lava tube for electrical insulation. When the sample inside the mold achieved the desired sintering temperature, the temperature of the thermally insulated mold stayed low enough not to damage the mold itself. An obtained cylindrical sample has dimensions of 12.7 mm (1/2 inch) in diameter by 28.6 mm (1 1/8 inch) long. Its average grain size is 64 nm and the Vicker’s hardness is 5.3 GPa.

scholarly journals Antimicrobial Potential of Biosynthesized Silver Nanoparticles by Aaronsohnia factorovskyi Extract

Molecules ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 130
Author(s):  
Fatimah Al-Otibi ◽  
Reem A. Al-Ahaidib ◽  
Raedah I. Alharbi ◽  
Rana M. Al-Otaibi ◽  
Gadah Albasher
Keyword(s):  
Staphylococcus Aureus ◽  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Antifungal Activity ◽  
Plant Extracts ◽  
Fusarium Solani ◽  
Large Scale ◽  
Average Diameter ◽  
Inhibition Zone ◽  
Diffusion Method

The green biosynthesis of nanoparticles by plant extracts is an attractive and promising technique for medicinal applications. In the current study, we chose one of the daisy plants, Aaronsohnia factorovskyi (which grows in the Najd region, Saudi Arabia), to investigate its anti-microbial efficacy, in combination with silver nanoparticles. The biosynthesized nanoparticles were evaluated for antibacterial activity against Staphylococcus aureus, Bacillussubtilis (Gram-positive), Pseudomonas aeruginosa, and Escherichia coli, (Gram-negative) using the disc diffusion method, while the antifungal activity was assessed against Fusarium oxysporum, Fusarium solani, Helminthosporiumrostratum, and Alternariaalternata. The potential phytoconstituents of the plant extracts were identified by Fourier-transform infrared spectroscopy (FT-IR) techniques, the Field emission scanning electron microscopy (FE-SEM), Chromatography/Mass Spectrometry (GC-MS) techniques, and Zeta potential analysis. The current study revealed the ability of the tested plant extract to convert silver ions to silver nanoparticles with an average diameter of 104–140 nm. Biogenic Aaronsohnia factorovskyi-silver nanoparticles (AF-AgNPs) showed significant antibacterial activity against Staphylococcus aureus with inhibition zone diameter to 19.00 ± 2.94 mm, and antifungal activity against Fusarium solani, which reduced the growth of fungal yarn to 1.5 mm. The innovation of the present study is that the green synthesis of NPs, which is simple, cost-effective, provides stable nano-materials, and can be an alternative for the large-scale synthesis of silver nanoparticles.

scholarly journals Nanocomposite Inks Based on Nickel–Silver Core–Shell and Silver Nanoparticles for Fabrication Conductive Coatings at Low-Temperature Sintering

2021 ◽  
Vol 5 (1) ◽  
pp. 15
Author(s):  
Anna Pajor-Świerzy ◽  
Franciszek Szendera ◽  
Radosław Pawłowski ◽  
Krzysztof Szczepanowicz
Keyword(s):  
Silver Nanoparticles ◽  
Low Temperature ◽  
Low Cost ◽  
Future Application ◽  
Core Shell ◽  
Low Temperature Sintering ◽  
Ag Nps ◽  
Conductive Coatings ◽  
Nickel Silver ◽  
Silver Core

Nanocomposite inks composed of nickel–silver core–shell and silver nanoparticles (NPs) can combine the advantages of lower cost, high conductivity, and low-temperature sintering processes, which have attracted much attention in the development of materials for printed flexible electronics. In this context, in the present paper, we report the process of preparation of nanocomposite ink containing nickel–silver core–shell nanoparticles, as the main filler, and silver nanoparticles, as doping material, and their application for the fabrication of conductive coatings. It was found that the addition of a low concentration of Ag NPs to ink formulation based mainly on low-cost Ni-Ag NPs improves the conductive properties of coatings fabricated by ink deposition on a glass substrate. Two types of prepared nanocomposite ink coatings showed promising properties for future application: (1) doped with 0.5% of Ag NPs sintered at 200 °C as low cost for larger industrial application and, (2) containing 1% of Ag NPs sintered at 150 °C for the fabrication of conductive printed patterns on flexible substrates. The conductivity of such nanocomposite films was similar, about of 6 × 106 S/m, which corresponds to 35% of that for a bulk nickel.

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