NOVELTY - Manufacturing green-energy water comprises: conducting water (11) flow through a self-support visible-light photocatalytic reaction device (12), which decomposes the water into hydrogen ions and hydroxide ions; conducting the hydrogen ions and hydroxide ions through an ion separation device (13), which separates hydrogen ions and hydroxide ions from each other; and conducting the separated hydroxide ions into an amount of water to form alkaline green-energy water (23), and conducting the separated hydrogen ions into another amount of water to form acidulous green-energy water (22).    USE - The method is useful for manufacturing green-energy water, which is useful: for cleaning purposes in photoelectric and semiconductor industries; in processing of waste water, organic cultivation, organic agriculture, purification of water and sterilization of medical facility; in removing total organic carbon from waste water; and in deodorization, sterilization, washing of metal or metal ions.    ADVANTAGE - The method: expands the absorption range of light by the photocatalyst from ultraviolet to visible light, thus improves the utilization of photo energy and increases the productivity of green-energy water; utilizes ion separation device, which separates ions by applying magnetic field or electric field to attract the ions, thus preventing reversed reaction; utilizes adhesive-free self-support technology for photocatalysts, which replaces the conventional adhesive-bonding carrier, thus extending the lifespan of substrate in the operation of generation of green-energy water; and provides a Gibbs free energy ( Delta ) greater than 0 reaction mechanism for decomposition of water by the photocatalyst, thus improving productivity of green-energy water. The green-energy water: is environmentally friendly; decomposes organic substances for preventing oxidization of metal, when the water is alkaline water; and decomposes harmful substances that cannot be decomposed by chlorine and ozone, thus exhibiting sterilization, deodorization, decolorization, and metal oxidization, when the water is acidulous water.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a green-energy water manufacturing device comprising: a self-support visible-light photocatalytic reaction device; and an ion separation device coupled to the self-support visible-light photocatalytic reaction device.    DESCRIPTION OF DRAWING(S) - The figure shows a flow chart of the method of manufacturing green-energy water.    Water molecules (11)    Self-support visible light photocatalyst reaction device (12)    Ion separation device (13)    High concentration acidulous green-energy water (22)    High concentration alkaline green-energy water (23)