A plasma generating device comprising: a cylindrical rotational electrode situated lengthwise on a rotating shaft connected to a motor, the rotational electrode disposed over a reservoir and having a contact portion extending into the reservoir; one or more static electrodes held in proximity to the rotational electrode to generate a plasma therebetween when a sufficient voltage difference exists between the static electrodes and the rotational electrode, the sufficient voltage difference created by a high voltage generator connected directly or indirectly to the static electrodes, the rotational electrode, or both; and a dielectric material situated between the rotational electrode and the static electrodes, the dielectric material having a sufficient thickness to prevent a short-circuit between the rotational electrode and the static electrodes yet a minimal thickness to allow the plasma to be generated between the rotational electrode and the static electrodes.

A method and generator for generation of hydrogen peroxide which operate on the principle of conveying air-liquid or vapor flow through a corona discharge zone in air. Such devices can be used for disinfection of air and of various objects for industrial and home uses.

Disclosed are a liquid ion generator and a method of preparing an ion-metal complex using the same. More particularly, the ion generator includes a chamber; an electromagnetic field generator for forming an electric field or a magnetic field in the chamber; and a power source for supplying power to the electromagnetic field generator.