It is known that upon introduction of silver nanoaprticles to bacteria, elemental silver is transformed into ionic form which exhibits the antibacterial effect. However, silver ions can be distributed directly to the bacteria without the need to synthesize nanoparticles of elemental silver. I guess the reduction is necessarry due to the stability issues but I would appreciate a more specific answer. I had a hard time finding a simple answer to this question in literature. Thank you.