▎ 摘　　要

NOVELTY - Catalyst for degrading antibiotics in water driven by natural light comprises 1-9 pts. wt. nano-titanium dioxide, 1-5 pts. wt. complex microbial inoculum, 2-10 pts. wt. carrier, 1-5 pts. wt. graphene, 1-5 pts. wt. embedding agent, 1-4 pts. wt. nano-zinc oxide, 1-2 pts. wt. lanthanum nitrate, 2-3 pts. wt. nitrate, 1-2 pts. wt. polyvinyl pyrrolidone, and 1-4 pts. wt. N,N-dimethyl formamide. USE - The catalyst is useful for degrading antibiotics in water driven by natural light. ADVANTAGE - The catalyst is economical and has high efficiency and recycled by filter membrane or air flotation and easily degradable small molecule organic matter or directly mineralizing and realizes natural light driving degradation of antibiotic in water. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing catalyst, comprising (i) dissolving the raw material nano-titanium dioxide, composite bacteria agent, carrier, graphene, embedding agent, nano-zinc oide, lanthanum nitrate, ferric nitrate, polyvinylpyrrolidone and N,N-dimethylformamide in water, making the total amount of iron and zinc ions in the water 0.8-1.12 mmol, adding sodium nitrate to make the sodium nitrate concentration 0.05-0.15 mol/l, adding 0.98-1.02 ml 30% hydrogen peroxide, stirring at room temperature uniformly, adjusting the pH to 7-8 with a sodium hydroxide solution with a concentration of 400 mg/l to obtain a mixed solution; (ii) transferring the obtained mixed solution to the tower reactor, and reacting at 115-125degrees Celsius for 15-18.5 hours to obtain a suspension; (iii) washing the obtained suspension with absolute ethanol for 2-4 times, centrifuging at 6000-10000 revolutions/minute for 5-10 minutes, and retaining the precipitate; (iv) impregnating the calcined support containing metal aluminate with a solution containing nickel acetate at a temperature of greater than or equal to40degrees Celsius and drying the impregnated support with the retained precipitate, and forming nickel oxide on the surface of the support; and (v) calcining the catalyst carrier at 200-800degrees Celsius at a rate of 1-3degrees Celsius/minute under the protection of nitrogen atmosphere for 3-6 hours.