▎ 摘　　要

NOVELTY - Photocatalytic material is prepared by using titanium source, alkanolamine, silver powder, organic acid, alcohol solvent, active carrier, pH regulator and water. USE - Photocatalytic material for degrading waste drilling fluid (claimed), aromatic compounds, condensed aromatic hydrocarbons, hydrocarbons, halogenated aromatic compounds and other organic substances in the waste drilling fluids into water and carbon dioxide. ADVANTAGE - The photocatalytic material helps in harmless and ecofriendly degradation of waste drilling fluid. The catalytic material is an inorganic material, which does not cause secondary pollution by itself. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. a method for preparing a photocatalytic material, which involves: i. uniformly mixing an alcohol solvent, water, alcohol amine and an organic acid to obtain a solution; ii. mixing and reacting a titanium source with the obtained solution; iii. adding silver powder into the reaction system, and adjusting the temperature and the pH value; iv. adding an active carrier into the system for impregnation and loading, and drying; and 2. a method of degrading a waste drilling fluid, which involves contacting the waste drilling fluid with a photocatalytic material under the illumination condition.