▎ 摘　　要

NOVELTY - The preparation method of lithium-lanthanum-lead titanate-reduced graphene oxide involves (1) adding lead(II) nitrate to deionized water, stirring until completely transparent, adjusting pH of the solution, and stirring the mixture at 0 degrees C to form solution (A), (2) dripping titanium tetrabutoxide into ethanol solution to obtain precursor containing precipitate, (3) adding precursor to solution (A) to form solution (B), (4) dissolving a certain amount of lithium nitrate and lanthanum(III) nitrate in deionized water to prepare solution (C), dripping solution (C) into solution (B) to form solution (D), (5) adding reduced graphene oxide to solution (D), ultrasonically dispersing, and uniformly stirring to form liquid precursor, (6) transferring the obtained precursor to a high pressure reactor, heating at 180-220 degrees C for 12-24 hours, and naturally cooling to room temperature, and (7) repeatedly washing precipitate in reactor using ethanol and deionized water 3 times, and drying. USE - Preparation method of lithium-lanthanum-lead titanate-reduced graphene oxide used for photocatalytic application. ADVANTAGE - The method enables preparation of lithium-lanthanum-lead titanate-reduced graphene oxide with excellent carrier transport property using reduced graphene oxide to promote efficient separation of photogenerated electrons and holes, improved photocatalytic performance, and short synthesis period, by simple and economical processes. DETAILED DESCRIPTION - In the step (1), the stirring time is 30-50 degrees C, and the pH value of the solution is adjusted to 12-13 using sodium hydroxide solution. In the step (6), the heating process is performed at 180-220 degrees C for 12-24 hours, and the naturally cooling temperature is room temperature. The molar ratio of lithium nitrate and lanthanum(III) nitrate is 1:1. The molar ratio of titanium tetrabutoxide to total amount of lead(II) nitrate, lithium nitrate and lanthanum(III) nitrate is 1:1. The molar ratio of titanium tetrabutoxide to total amount of lithium nitrate and lanthanum(III) nitrate is 1:(0-0.02).