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Property of nano and superfine silver particles:
The particle morphology in ultrafine particles Silver Powder The spherical, dendritic and flake forms are also included. Silver nitrate obtained after complexing with ammonia is obtained using dispersant and hydrazine. The average particle is less than 0.5mm. Surface area is 0.15m2/g. The silver oxide reduction method can also be used with formaldehyde. Then convert silver nitrate in silver carbonate and add triethanolamine for the reduction method.
Ultrafine silver is used widely in the electronic industry. Nanosilver nanoparticles A unique structure of nanosilver particles allows them to have micro-size, quantum-size, surface, and macro-quantum effects. This gives them physical and chemical properties which are absent in other materials. Nanosilver particle occupy an important position in surface-enhanced Raman and resonance scattering spectroscopy as well as molecular biology. They are also essential for basic theoretical research.
Nanosilver powder is used for its high surface activity as well as catalytic performance in ultra-low temperature refrigerator diluents. It is used widely in molecular electronic, immunoassays, sensor research, and other applications due to its unique physical-chemical properties. Addition of nanosilver in chemical fibres can also improve their specific properties and enhance their sterilization abilities. There are four types of ultrafine silver: spherical (or rounded), flocculent (or dendritic), and flakelike. According to their particle size, they can be classified into the following categories: fine silver with a particle size between 10-40mm, ultrafine with a particle size between 0.5-10mm, Fine silver with 0.5mm, Nano silver with 0.1mm.
Superfine silver powder preparation method and nano silver powder preparation:
Preparation methods for ultrafine silver powder The main methods include the gas phase method, the liquid phase method and the reliable phase method. The gas phase process is expensive, has high energy consumption, and produces a low yield. The ultrafine silver prepared using the reliable phase method also has a large particle-size and a wide-range of particle-size distribution.
The liquid phase chemical reduction is a method that uses a reducing compound to deposit the silver from its salt, complex aqueous solutions or organic systems in powder. Some of the most commonly used reducing substances are formaldehyde (ascorbic acid), glycerin (organic amines), sodium citrate (unsaturated alcohols), hydrazine or hydrazine compound, etc. Hydrazine hydrate, in general, is used. Addition of a small amount of additive Nitrate to silver ammonia is done in the aqueous solution. With the help of the hydrazine hydrohydrate as a reducing agent, the amount is adjusted in order to get a different size of silver powder. The amount of nitrates added can be determined by the requirement. This method yields silver powder that has a very small particle size. The particle size range is short and the reproducibility is good.
(aka. Technology Co. Ltd., a global chemical material manufacturer and supplier with more than 12 years of experience in providing high-quality Nanomaterials and chemicals. Our superfine powder is of high purity with a good particle size. Please lower your voice. Contact us if necessary.
The particle morphology in ultrafine particles Silver Powder The spherical, dendritic and flake forms are also included. Silver nitrate obtained after complexing with ammonia is obtained using dispersant and hydrazine. The average particle is less than 0.5mm. Surface area is 0.15m2/g. The silver oxide reduction method can also be used with formaldehyde. Then convert silver nitrate in silver carbonate and add triethanolamine for the reduction method.
Ultrafine silver is used widely in the electronic industry. Nanosilver nanoparticles A unique structure of nanosilver particles allows them to have micro-size, quantum-size, surface, and macro-quantum effects. This gives them physical and chemical properties which are absent in other materials. Nanosilver particle occupy an important position in surface-enhanced Raman and resonance scattering spectroscopy as well as molecular biology. They are also essential for basic theoretical research.
Nanosilver powder is used for its high surface activity as well as catalytic performance in ultra-low temperature refrigerator diluents. It is used widely in molecular electronic, immunoassays, sensor research, and other applications due to its unique physical-chemical properties. Addition of nanosilver in chemical fibres can also improve their specific properties and enhance their sterilization abilities. There are four types of ultrafine silver: spherical (or rounded), flocculent (or dendritic), and flakelike. According to their particle size, they can be classified into the following categories: fine silver with a particle size between 10-40mm, ultrafine with a particle size between 0.5-10mm, Fine silver with 0.5mm, Nano silver with 0.1mm.
Preparation methods for ultrafine silver powder The main methods include the gas phase method, the liquid phase method and the reliable phase method. The gas phase process is expensive, has high energy consumption, and produces a low yield. The ultrafine silver prepared using the reliable phase method also has a large particle-size and a wide-range of particle-size distribution.
The liquid phase chemical reduction is a method that uses a reducing compound to deposit the silver from its salt, complex aqueous solutions or organic systems in powder. Some of the most commonly used reducing substances are formaldehyde (ascorbic acid), glycerin (organic amines), sodium citrate (unsaturated alcohols), hydrazine or hydrazine compound, etc. Hydrazine hydrate, in general, is used. Addition of a small amount of additive Nitrate to silver ammonia is done in the aqueous solution. With the help of the hydrazine hydrohydrate as a reducing agent, the amount is adjusted in order to get a different size of silver powder. The amount of nitrates added can be determined by the requirement. This method yields silver powder that has a very small particle size. The particle size range is short and the reproducibility is good.
(aka. Technology Co. Ltd., a global chemical material manufacturer and supplier with more than 12 years of experience in providing high-quality Nanomaterials and chemicals. Our superfine powder is of high purity with a good particle size. Please lower your voice. Contact us if necessary.