▎ 摘　　要

NOVELTY - Preparing high-activity photocatalyst comprises (i) mixing 100 pts. wt. titanium dioxide, 6-12 pts. wt. graphene and 4-12 pts. wt. cerium (IV) ammonium nitrate, adding N,N-dimethylformamide (2-3 times the total mass of the above-mentioned raw materials) and solvent (3-5 times the total mass of the above-mentioned raw materials), stirring at 1200-1600 revolutions per minute for 10-30 minutes, and adding glacial acetic acid to adjust the pH to 1.5-3, adding polyvinylpyrrolidone as spinning additive (12-18 wt.% of the solvent), and stirring at 300-800 revolutions per minute until the solution has no large particles, (ii) carrying out electrostatic spinning process of the mixed solution to obtain precursor, and (iii) heat-treating the precursor to obtain nanofibrous high-activity photocatalyst composed of cerium-doped titanium dioxide and graphene. USE - The highly-active photocatalyst is useful in catalytic degradation of organic pollutants (claimed). DETAILED DESCRIPTION - Preparing high-activity photocatalyst comprises (i) mixing 100 pts. wt. titanium dioxide, 6-12 pts. wt. graphene and 4-12 pts. wt. cerium (IV) ammonium nitrate, adding N,N-dimethylformamide (2-3 times the total mass of the above-mentioned raw materials) and solvent (3-5 times the total mass of the above-mentioned raw materials), stirring at 1200-1600 revolutions per minute for 10-30 minutes, and adding glacial acetic acid to adjust the pH to 1.5-3, adding polyvinylpyrrolidone as spinning additive (12-18 wt.% of the solvent), and stirring at 300-800 revolutions per minute until the solution has no large particles, (ii) carrying out electrostatic spinning process of the mixed solution prepared in step (i) to obtain precursor, where the process condition of the electrospinning: the power supply voltage is 12-18 kV, the distance between the needle and the collection device is 16-20 cm, the syringe flow rate is 0.8-1.2 ml/minute, and the collection device adopts roller collection, and the rotation speed of the roller is 80-150 revolutions per minute, and (iii) heat-treating the precursor to obtain nanofibrous high-activity photocatalyst composed of cerium-doped titanium dioxide and graphene, where the heat treatment is carried out at a temperature of 400-600 degrees C in a nitrogen atmosphere. An INDEPENDENT CLAIM is also included for highly-active photocatalyst, prepared by above method, where the highly-active photocatalyst is nano-fibrous high-activity photocatalyst composed of cerium-doped titanium dioxide and graphene, and the average diameter of nanofibers is 80-200 nm.