Method of making a nano-particle photocatalyst

A method of synthesizing an Iron (Fe) doped Zinc Oxide (ZnO) nano-particle photocatalyst, comprising:

• mixing a solid iron nitrate and zinc nitrate in a ratio of 1:3;
• dissolving the solid nitrate and zinc nitrate using a distilled water into a solution at a specific temperature;
• adjusting a pH of the solution to a specific pH by adding a sodium hydroxide solution to obtain a pH adjusted homogeneous solution;
• heating and constant stirring the pH adjusted homogeneous solution at a specific temperature overnight;
• cooling the stirred pH adjusted homogeneous solution to obtain a Fe doped ZnO photocatalyst as a Fe doped ZnO photocatalyst precipitate;
• and
• washing the Fe doped ZnO photocatalyst precipitate with ethanol three times to obtain a washed Fe doped ZnO photocatalyst precipitate.