| CPC C01B 3/08 (2013.01) [B01J 19/127 (2013.01); B01J 35/39 (2024.01); C01B 3/042 (2013.01); C01B 3/50 (2013.01); C25B 1/04 (2013.01); C25B 1/55 (2021.01); C25B 9/23 (2021.01); C25B 15/083 (2021.01); C01B 2203/0277 (2013.01); C01B 2203/04 (2013.01)] | 14 Claims |

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1. A hydrogen production apparatus including a photocatalyst and generating hydrogen from water, the hydrogen production apparatus comprising:
a wavelength separation unit separating sunlight by wavelength;
an infrared light conversion unit converting infrared light separated by the wavelength separation unit to visible light, wherein the visible light is incident upon the photocatalyst; and
an ultraviolet light conversion unit converting ultraviolet light separated by the wavelength separation unit to visible light, wherein the visible light is incident upon the photocatalyst,
wherein visible light separated from sunlight by the wavelength separation unit is incident upon the photocatalyst.
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