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  • Platinum Black Catalyst Platinum Nanopowders

    Customized Metal Platinum Black Catalyst Platinum Nanopowders Platinum is one of noble metals, it is one of the best catalyst and antioxidants, nano platinum ( Pt ) with small particles size, strong, safe, stable, reliable, environmentally friendly, non-toxic, tasteless, harmless, can be widely used in biomedical, Catalytic industry, cosmetic etc. 1. Platinum Nanopowders for biomedical  Hydrogen and nano-platinum have a synergistic effect that can be used in conjunction with the treatment of oxidant stress disorders; Studies have shown that platinum nano particle-mediated photo-thermal effect in the treatment of bone metastases in nude mice can be a good inhibition of bone tumor growth and osteolytic bone destruction; Lactic acid bio-sensor based on nano - platinum black modification for rapid detection, etc.  2. Platinum Nanopowders as catalyst  Nano platinum are widely applied in catalyst part, Nano-platinum powder has excellent bio-catalytic activity, it can be applied to polymer hydrogenation, reduction and synthesis. Nano platinum also can be used as fuel cell catalyst, due to its high cost, due to its high cost, now some use nano nickle to replace the platinum, and some are looking for ways to improve nano platinum efficiency as catalyst in fuel cells to save cost. Last year Chinese researches have developed a superfine platinum nanowire catalyst on the surface of the zigzag, greatly increasing the surface activity and specific surface area of the fuel cell catalyst, increasing its overall catalytic activity by more than 50 times. 3. Platinum Nanopowders for cosmetics Platinum nanoparticles , due to its strong oxidation resistance Platinum can effectively remove free radicals in the human body. Play the anti-aging effect and at the same time to achieve whitening bright. Platinum Nanopowders can also be used for food preservative, car exhaust purification, etc. Nano platinum do have a lot of amazing functions, we cannot list its amazing functions one by one though.  If you're interstsed in Platinum Nanopowders, please feel free to contact us as more

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Subverting existing cognitive nanotechnology Subverting existing cognitive nanotechnology

Nanotechnology is a technology that explores and controls substances below 100 nanometers. At this scale, materials exhibit properties that are distinct from macroscopic and microscopic particles. After the rapid development of the last two or three ...

Silver Nanopowders (Ag)

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Our featured products including silver nanoparticles and nano silver dispersion.size from 10nm to 10um.
  • Nano colloidal silver
    Antimicrobial Nano colloidal silver 100ppm-10000ppm
    Nano colloidal silver <20nm 100ppm-10000ppm  Concentration: 100ppm to 10000ppm and can be customized Particle size: <20nm, also can be customized Silver purity: 99.99% Solvent: deionized water or other organic solvent Package: 100ml / bottle, 500ml / bottle, 1L / drums etc, we can also pack it as needed. Features: safe, environmentally friendly, non – toxic, tasteless, convenient to use. Customize service for special particle size, dispersion, coating, etc are available, welcome to inquiry. Silver nanoparticles are well known for their antimicrobial properties. It can be used as an antibacterial and disinfectant. Addition of very small amounts of silver nanopowder (~0,1%) into different inorganic matrises makes those materials effective for killing pathogenic microorganisms like Escherichia Coli, Staphylococcus Aurous, etc. In addition to the silver colloids, there are nano silver powders to supply. Our packing is as follows:
  • Bright Silver Powder
    Bright Silver Powder micron flake Ag
    Micron size, flake morphology, Bright Silver Powder, 99.99% high purity, with different particle size for customers' choice.  It is widely applied for conductive paste.
  • silver powder flake
    silver powder flake for conductive
    HW offer silver powder with flake morphology, micron size or sub-micron size, works good for conductive use
  • transparent antibacterial dispersion
    transparent antibacterial dispersion ( nano Ag )
    This transparent antibacterial dispersion use nano Ag to run the antibacterial effect, solution we use is deionized water. 
  • Ag coated Cu
    conductive Ag coated Cu powder micron size
    Ag coated Cu, have good electric conductive performance, while much lower cost than pure Ag powder.  Flake / dendriitic / near spherical silver coated copper both are available
  • Nano Silver Antibacterial Dispersion/Solution
    Nano Silver Antibacterial Dispersion/Solution
    [Description] Nano silver antibacterial  dispersion, nanometer silver solution, Colorless transparent nanometer silver antibacterial agent [size] 20 nm - 100 nm, or according to customer requirements [Solid Content] 300 ppm, 500-600 ppm, 1000 ppm, 2000 ppm, 5000 ppm, 10000 ppm, or according to customer's requirements [Properties] Good stability, antibacterial endurance, no resistance, no irritating smell, easy to use, potent antibacterial, non-toxic, etc. Broad-spectrum sterilization, in a few minutes it can kill more than 650 kinds of bacteria, which is fast and efficient, can rapidly combine with bacterial cell walls/film and make enzyme lose activity. [Application] 1. Articles for daily use: can be used for all kinds of textiles, clothing, bedding, clothing, underwear, socks, carpet, paper products, soap, facial mask and scrub supplies. 2. Chemical building materials: nano silver dispersion can be added to the waterborne paint, printing ink, paint, solid liquid paraffin, various kinds of organic solvent (inorganic), etc. 3. Medical and health care: medical rubber hose, medical gauze, women topical antibacterial medicines and health products. 4. Ceramic products: it can be used as nano silver antibacterial tableware, sanitary ware, etc. 5. Plastic products: silver nanoparticles can be added to the PE, PP, PC, PET, ABS etc. Various kinds of plastic products realize the antibacterial function. [Storage] Placed in a cool, dry place, storage period of five years.
  • Silver nanoparticles use in polymer composite materials
    Silver nanoparticles use in polymer composite materials
          Nano silver/polymer composite materials, as an important member of the composite materials, with its excellent physical and chemical properties, has got fast development in terms of effective antibacterial sterilization. Small particle size,large specific surface area and more surface activity center number, silver nanoparticles is playing an role of the high catalytic activity and selectivity, and polymer material can prevent reunion of silver nanoparticles and keep long-term stability.       Nano silver/polymer composite materials can become excellent antibacterial materials, the main reasons are as follows: 1. After the nano silver is composited to polymer,the material is more stable, silver ions loss is slower, duration is longer, bacteriostasis effect is more lasting. 2. The specific surface area of silver nanoparticles is big, and can touch the microbes to a greater availability,therefore, sterilization rate is higher. 3. Non-toxic to human body but can efficiently kill microorganisms, and won't become resistant. 4. Some of the polymer itself has antibacterial, after being composited synergies produces, bacteriostatic effect is better.       the polymer compositing nano silver should have the features in below: 1. Stable physical and chemical properties, can be used as a bearing base of silver nanoparticles. 2. Do not react with silver nanoparticles, nano silver antibacterial properties will not be lowered. 3. Some of the polymer itself has antibacterial property, which can enhance the bacteriostatic effect of material.       Polymers commonly used as composite include polyethylene oxide PEO,  polyaniline PAn, Polyrhodanine, cellulose,  polypyrrole PPy,  poly dopamine PDA and so on. These are the quite ideal composite materials with silver, can improve the effect of antibacterial material.       The polymer price is cheaper, has a wide source, so nano silver/polyer composite cost is reduced, and the bacteriostatic effect enhance, it will become an important trend of future research.       Based on the above reasons,in medicine, nano silver/polymer composite materials are used in a bandage, dentist, catheters, etc., in maritime, silver nanoparticles/polymer composite materials is used in ship manufacturing, in life, it is used in the water, clothing, baby supplies, and other fields.Predictably, the future life will be is closely related to nano silver/polymer composite materials.       Hongwu International Group Ltd is committed to provide high-quality silver nanoparticles with the most reasonable price for customers who are doing nanotech research and have formed a complete cycle of researching, manufacturing, marketing and after-sale servicing. The company’s silver nanoparticles have been sold to many countries around the world. if you have any request about silver particles, please feel free to contact us at
  • Antimicrobial nanoparticles Ag silver nanopowder dispersion
    Antimicrobial nanoparticles Ag silver nanopowder dispersion
    Antimicrobial nanoparticles Ag silver nanopowder dispersion   1. Who are we? We, Hongwu Nanometer, In Business since 2002, are offering different shape & size Nanoparticles, Nanopowders, Nanowires, Micropowder, Surface Coating, Dispersion and Innovative silver nanomaterials. Full Consultancy Services. and we specialize in fabricating a wide variety of custom nanomaterials for academic and industrial customers for ag silver nanopowder/nanoparticles.   2. Why Buy silver nanopowder/dispersions from Us? Customization, Guaranteed to meet specification Supply Powder & dispersions & solutions & liquid Surface coating, pvp or oleic acid Narrow size distributions and no aggregation TEM, SEM, COA and MSDS    3. Silver Nanopowder Applications Silver nanopowders are one of the most commonly utilized antimicobial nanoparticles due to their antimicrobial properties, high electrical conductivity, and optical properties. Silver nanopowder serve as an inorganic antibacterial powder and play a critical role in the suppression and killing of various pathogenic microorganisms such as Staphylococcus auras, Escherichia coli, etc. The product is durable, has a non-oxidized black appearance, and exhibits many other properties. It can be used in household, medical, and health care supplies,most wide used as textile auxiliary agent. The colloidal silver is capable of disinfecting water through sterilization.  
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