It seems to be the oligodynamic effect.

On Sun, Apr 5, 2020, 7:36 PM Phil Morrison <[email protected]>
wrote:

> Basic explanation:
>
> Silver nano-particles AgNP destroy the protective shield (shell, coating,
> knobs) of the virus by oxidation.
>
> The AgNP physically absorbs and carries oxygen within its silver atom
> matrix, activates the oxygen in the process, and discharges the activated
> oxygen on pathogens, which inactivates (oxidizes) the pathogen forthwith.
>
> This is a very selective reaction affecting abnormal cells only.
>
>
>