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Property of nano and superfine silver particles:
The particle morphology in ultrafine particles Silver Powder The spherical, dendritic and cubic microcrystalline are included. After silver nitrate has been complexed with the ammonia-water, it can be obtained by adding dispersant and hydrazine to reduce, then washing with water, filtering, and drying. The average particle is less than 0.5mm. The surface area of the particles is 0.1-5.0m2/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 a variety of effects including surface effects, macro-quantum effects, and quantum size effects. This gives them physical and chemical properties which are different from those found 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 widely used as a catalyst and ultra-low temperature refrigerator dilutient. It is used widely in molecular electronic, immunoassays, and sensor development 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 an average size of 10-40mm, ultrafine with an average size of 0.5-10mm, Fine silver with an average size of 0.5mm, Nano silver with a particle size less than 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, liquid phases and reliable phases. The gas phase process is expensive, has high energy consumption and low output. The ultrafine silver prepared by reliable phase method has large particle sizes and a broad distribution of particle sizes.
The liquid phase chemical reduction is a method that uses a reducing compound to deposit the silver in powder from a complex aqueous system or salt. Commonly-used reducing agents 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 reducing agent, hydrazine hydrochloride, the amount is adjusted in order to get a different size of silver powder. The amount of nitrates added can be determined according to the requirement. The silver powder produced by this method is characterized by a small particle, a narrow particle size range, and high reproducibility.
(aka. Technology Co. Ltd., a global chemical material manufacturer and supplier with more than 12 years of experience, is a trusted source for 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 cubic microcrystalline are included. After silver nitrate has been complexed with the ammonia-water, it can be obtained by adding dispersant and hydrazine to reduce, then washing with water, filtering, and drying. The average particle is less than 0.5mm. The surface area of the particles is 0.1-5.0m2/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 a variety of effects including surface effects, macro-quantum effects, and quantum size effects. This gives them physical and chemical properties which are different from those found 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 widely used as a catalyst and ultra-low temperature refrigerator dilutient. It is used widely in molecular electronic, immunoassays, and sensor development 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 an average size of 10-40mm, ultrafine with an average size of 0.5-10mm, Fine silver with an average size of 0.5mm, Nano silver with a particle size less than 0.1mm.
Preparation methods for ultrafine silver powder The main methods include the gas phase, liquid phases and reliable phases. The gas phase process is expensive, has high energy consumption and low output. The ultrafine silver prepared by reliable phase method has large particle sizes and a broad distribution of particle sizes.
The liquid phase chemical reduction is a method that uses a reducing compound to deposit the silver in powder from a complex aqueous system or salt. Commonly-used reducing agents 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 reducing agent, hydrazine hydrochloride, the amount is adjusted in order to get a different size of silver powder. The amount of nitrates added can be determined according to the requirement. The silver powder produced by this method is characterized by a small particle, a narrow particle size range, and high reproducibility.
(aka. Technology Co. Ltd., a global chemical material manufacturer and supplier with more than 12 years of experience, is a trusted source for 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.