▎ 摘　　要

NOVELTY - A seawater desalination composite film comprises porous ceramic layer, graphene oxide layer and silica phase layer; where silica phase layer is prepared comprises silica coating, prepared by taking tetraethyl orthosilicate, adding 80-100 times of 65-75 wt.% ethanol aqueous solution, heating at 55-65 degrees C, adding 8-12 wt.% hydrochloric acid solution, forming sol, adding magnesium metal particles, and stirring. USE - Seawater desalination composite film used for producing hydrogen-rich direct drinking water (claimed). ADVANTAGE - The product has high desalination rate, has strong stain resistance, is not easy to be blocked, and has long service life. The desalinated water has good reducibility and has antioxidant effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of seawater desalination composite film comprising preparing ceramic slurry, coating onto smooth substrate, roller pressing, drying, curing obtaining porous ceramic layer, peeling from substrate upper, preparing graphene oxide solution, spraying onto porous ceramic layer surface, filtering, preparing silica phase coating, coating onto graphene oxide layer surface, aging, and drying.