Embodiments of the present disclosure combine a suitable photocatalyst with a non-conducting matrix such as plastic, glass or rubber for the purpose of the production of activated electrons, needed in the creation of hydrogen peroxide, in the presence of light of a suitable frequency or frequencies and water. A suitable photocatalyst such as anatase titanium dioxide is combined with a plastic such as polypropylene as one would a pigment. The impregnated plastic can be immersed in water whereupon activated electrons and holes (electron absences in the valence band of the plastic substrate acting as a semiconductor) are produced on the surface of the photocatalyst upon irradiation. Activated electrons are an excellent oxidizer, disinfectant, purifier and go on to kill bacteria, algae, etc. in the water, as well as to reduce water hardness including mineral deposits. Unused hydrogen peroxide breaks down into hydrogen ion and free oxygen in a short time.