▎ 摘　　要

NOVELTY - Preparing nickel-titanium houghite and graphene composite photocatalyst comprises taking graphene, dispersing ultrasonic in deionized water, adding nickel nitrate, adjusting pH with concentrated hydrochloric acid, stirring, adding titanium tetrachloride solution, stirring and dissolving, adding urea, reacting, and centrifugally washing the product to be neutral with deionized water to obtain the visible light responding dried nickel-titanium hydrotalcite to graphene composite photocatalyst. USE - Method for preparing nickel-titanium houghite and graphene composite photocatalyst (claimed). ADVANTAGE - The method can provide catalyst having good stability, long cycle life and low cost, and is easy to be produced on a large scale. DETAILED DESCRIPTION - Preparing nickel-titanium houghite and graphene composite photocatalyst comprises taking 1-25 mg graphene, dispersing ultrasonic in 50-100 ml deionized water at 100-300 W for 20-60 minutes, adding 2.32-3.49 g nickel nitrate, adjusting pH with concentrated hydrochloric acid to 3-5, stirring for 30-60 minutes, adding 150-350 mu l titanium tetrachloride (TiCl4) solution containing 0.001-0.004 mol TiCl4, stirring and dissolving, adding 5-15 g urea, reacting at 70-100 degrees C for 18-24 hours at constant temperature hydrothermal system, centrifugally washing the product to be neutral by deionized water to obtain the visible light responding dried nickel-titanium hydrotalcite to graphene composite photocatalyst.