A method and device degrade microbes. In one embodiment, the device includes a purification device for producing hydrogen peroxide gas from air. The air comprises water vapor and oxygen. The purification device includes a body comprising an interior, an air inlet, and a gas outlet. The purification device also includes a catalyst. The catalyst is disposed within the interior. The catalyst comprises titanium dioxide. In addition, the purification device includes a light disposed to emit electromagnetic radiation into the catalyst. Moreover, the purification device includes a fan. The fan is disposed to blow air in a direction. The catalyst is disposed at an angle in relation to the direction.
