Article Comparative synthesis and antimicrobial action of silver nan...
Dear Pramila
It is true that silver nitrate is antibacterial agent and has been used for this property but that doesn't mean that other silver-based agent such as Ag NPs should not be studied. There are many antibiotics and some of them are efficient but still scientists are looking for better antibiotics. Silver nanoparticles have shown antibacterial activity against broad spectrum of bacteria. They can be made with different sizes, can be used as pure or combined with other materials, they are insoluble in water and can be removed after disinfection process and many other properties to make the Ag NPs attractive and interestin. There are a lot of information in the literature about the antibacterial activity of silver nitrate, Ag NPs and other silver-based materials. Each of which has its advantages and disadvantages.
dear renuka,
I agree both will give the antimicrobial activity. but we need to understand which is responsible for the activity (whether its ion of particle). In the case of AgNO3 the activity corresponds to ions but in nano Ag its particle. also the activity depends on the size of the particle. The mode of the activity which affects the cell has to be understand. in Ag Nps the particle can provide sufficient amount of electron and also particle act as poison on contact of any livinig cell. which even you can see just by touching the AgNO3 skin will become back. but it is hihgly depended on particle size in NPs.
Simple like that: it is all about immobilization, i.e. particle - solid substrates applied everywhere; solution - limited to aqueous applications.
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