▎ 摘　　要

NOVELTY - Photothermal conversion material has composite including an ultraviolet light and infrared light absorbing material is selected from the group consisting of tungsten oxide, titanium oxide, copper sulfide or carbon-containing material, and a visible light absorbing material is selected from the group consisting of iron oxide, carbon nitride, or precious metals. USE - Photothermal conversion material used in photothermal conversion material complex for sewage treatment or seawater desalination (all claimed). ADVANTAGE - The photothermal conversion material has photocatalystic ability, cost-effective, and easy to obtain, and can ability to absorb the photon energy of the full-spectrum (UV-to-vis-to-NIP) wavelength, and can efficiently convert light energy directly into heat energy under exposure to any light source, and has improved production efficiency of seawater desalination and salt production, and can able to convert heavy metal hexavalent chromium into non-harm trivalent chromium. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a photothermal conversion material complex, which comprises: a thermal conversion material as a membrane being laminated onto a hydrophilic fibrous layer. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a photothermal conversion material. 10Photothermal conversion composite layer structure 11Electrospun fiber layer 13Hydrophilic fibrous layer