▎ 摘　　要

NOVELTY - Preparing photo-induced enhanced Raman substrate based on titanium dioxide/silver nanoarray involves preparing titanium dioxide nanoarray structure by an anodic oxidation method by cutting a titanium sheet into pieces of equal size of 20-30 millimeters, putting the cut titanium sheet into an acidic solution for cleaning for 10 minutes, ultrasonically cleaning the sample with an acetone, an isopropanol, a methanol, an ethanol and a deionized water for 5 minutes, and then drying to obtain sample A in a beaker for later use. 48 milliliters ethylene glycol, 2 milliliters water and 0.4 wt.% ammonium fluoride are mixed uniformly and put the sample A to react for 30 minutes to obtain a sample B. USE - Method for preparing photo-induced enhanced Raman substrate based on titanium dioxide/silver nanoarray. ADVANTAGE - The method prepares the photo-induced enhanced Raman substrate in a simple, cost-effective and eco-friendly manner with enhanced SERS performance and photocatalytic property to degrade a probe molecule simultaneously to realize the reusability of the substrate, improves repeatability and provides a good way for future biological detection. DETAILED DESCRIPTION - Preparing photo-induced enhanced Raman substrate based on titanium dioxide/silver nanoarray involves preparing titanium dioxide nanoarray structure by an anodic oxidation method by cutting a titanium sheet into pieces of equal size of 20-30 millimeters, putting the cut titanium sheet into an acidic solution for cleaning for 10 minutes, ultrasonically cleaning the sample with an acetone, an isopropanol, a methanol, an ethanol and a deionized water for 5 minutes, and then drying to obtain sample A in a beaker for later use. 48 milliliters ethylene glycol, 2 milliliters water and 0.4 wt.% ammonium fluoride are mixed uniformly and put the sample A to react for 30 minutes to obtain a sample B. 25 milliliters glycerol, 25 milliliters water and 0.3 wt.% ammonium fluoride are mixed uniformly, and put the sample B to react for 4 hours to obtain a sample C. The obtained sample C is cleaned ultrasonically with a proper amount of the ethanol and dried to obtain sample D. The obtained sample D is put into a muffle furnace for heating treatment, and put the sample D in the air to cool to a room temperature to obtain the titanium dioxide nanoarray structure. The silver nanoparticle is prepared coated on a titanium dioxide nanoarray by accurately weighing 1.7 grams silver nitrate, 4 milliliters ammonia water and 7 grams glucose respectively, and dissolving the three drugs in three beakers respectively. A pipettor is used to add ammonia water to a silver nitrate solution drop by drop to obtain silver ammonia solution after a reaction. The sample of the titanium dioxide nanoarray structure is immersed to the heat treatment in the silver ammonia solution and a glucose solution for 30 seconds to obtain the silver nanoparticle coated on the titanium dioxide nanoarray. The graphene oxide is coated by preparing 0.3 grams per liter graphene oxide solution, and ultrasonically vibrating the graphene solution for 4 hours for later use. The prepared graphene oxide solution is added to a spin coater, and performed a spin coating for 4 times to obtain a final product. The obtained final product is put in a vacuum drying oven for drying to obtain the composite nanoarray photo-induced enhanced Raman substrate.