Nanoparticles are so-called fine particles of material that are made by physical, chemical or biological methods of the primary material, for example gold and silver nanoparticles are fine particles of gold and silver due to differences in size and proportion. Their mass by volume has very different properties. Silver and gold nanoparticles are produced in sizes from about 1_1000 nanometers and are used in the pharmaceutical, glass, medical and many other industries. In this rticle we will talk about gold nanoparticles synthesis, application of silver nanoparticles and silver nanoparticles synthesis.
Differences between gold and silver nanoparticles
Large companies producing antifungal and viral pharmaceuticals, glass factories, and medical device manufacturing plants in each country are major buyers of these nanoparticles. They are either producers of nanoparticles or import these products from other countries where they are produced.
In general, gold and silver are fundamentally different, they differ in color, sex, and type of chemical interactions, but there is an important point in common between them, both of which have different properties after becoming nanoparticles. Applications of gold and silver nanoparticles, for example gold and silver nanoparticles applications, vary in use across industries.
Gold nanoparticles have been used in the glass industry for a long time. These nanoparticles are available in different optics and in addition to glass are used in medical and pharmaceutical treatments and have subcellular thermal effects; gold is essentially metallic. It is neutral but becomes very active after becoming nanoparticles, besides silver nanoparticles is very active as a catalyst, antifungal and antimicrobial agents and viruses due to its small size and mass to volume ratio، used in the pharmaceutical and medical industries.
Which is better? gold or silver nanoparticles?
Silver and gold nanoparticles have different biological applications because of their biocompatibility. Chemical methods typically result in the retention of some of the toxic reactants on the nanoparticles. For this reason, the use of plants as sustainable and available resources in the preparation of biocompatible nanoparticles has attracted the attention of many researchers in recent years.
The advantages of this method include the non-toxicity, biocompatibility, cheapness and production of high purity nanoparticles. Given these advantages, nanoparticles synthesized in these methods can be used in biological applications such as nanosensors. The reaction time for the production of nanoparticles in substrates such as extract or plant biomass is low and the reaction is complete, but the phytoremediation method takes longer to produce the nanoparticles.
Role of gold and silver nanoparticles in cancer nano-medicine
Silver nanoparticles are clusters of silver atoms up to 3 nm in size and are widely used in various fields due to their unique physical and chemical properties. In addition to their use in the engineering industry (such as catalysts, optical devices, and electronics applications), these nanoparticles are also used in areas such as disinfectants, textiles, and medical devices due to their excellent antibacterial activity. Silver nanoparticles exhibit a wide range of antibacterial activity.
The antiviral effect of these nanoparticles has also been reported in the articles. Studies have shown that silver nanoparticles prevent the spread of HIV / AIDS and their effects are far greater than those of gold nanoparticles.
The effect of nanoparticles on viruses such as herpes and hepatitis B has also been reported. Silver nanoparticles help heal wounds, as increased resistance of the micro-organisms to antisera can delay wound healing. In general, injuries such as cuts, abrasions, burns, pimples, warts, fungal diseases, and other skin diseases can be treated with silver nanoparticles. Silver nanoparticles have been found to increase the efficiency of antisera.
Today, artificial bones made of polymethylmethacrylate and nano-silver are of medical use. Researchers have also made nanoparticles of gold-coated glass. They can be made to absorb a particular wavelength. But since infrared wavelengths penetrate the tissue up to a few centimeters easily, nanoparticles that absorb light energy near this wavelength have received much attention.
Therefore, nanospheres injected into the body can be heat externally using a strong infrared source. Such nanocomposites can be attached to heat-resistant polymer capsules. These capsules release their contents only when the nanoclay heat attached to them is deformed. One of the great uses of these nanofibers is in the treatment of cancer. Gold-coated nanoparticles can be attached to antibodies that bind specifically to cancer cells. Theoretically, if the nanoparticles are sufficiently heated they can only kill cancer cells without harming healthy tissues.
Most expensive nanoparticles on global market
In general, there are several factors involved in pricing different types of nanoparticles, one of which is the price of the primary metal, and the size of the produced nanoparticles can be taken into account in that the smaller the particle size, the higher the price.
Nanoparticles are on the rise in the global market due to their widespread use, as the price of this product increases as the research and development of its applications in the medical, pharmaceutical and dental industries grows with each passing year, corporate growth forecasts. The gold nanoparticles are about 18 to 24 percent about 2020.
Currently, the most expensive nanoparticles on the market are gold nanoparticles, in addition to silver and copper nanoparticles are also well priced. Mostly, any nano-particle that has broader and more important applications and is used in different industries has more customers and has a higher value.
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