▎ 摘　　要

NOVELTY - Preparation of catalyst, involves dispersing graphene oxide in deionized water, dripping sodium carbonate aqueous solution, and adjusting pH to 9-10 to obtain solution (A), dispersing a metal salt and a complexing agent in deionized water, adding a platinum precursor solution, and stirring to obtain solution (B), adding solution (B) to solution (A), stirring, transferring the solution to a hydrothermal kettle, reacting for 8-24 hours at 90-200 degrees C, solid-liquid separating, freeze-drying the separated solid matter, and calcining the dried solid substance for 1-5 hours at 200-500 degrees C in nitrogen atmosphere. USE - Preparation of catalyst for removing aldehyde. ADVANTAGE - The method involves less number of processes, and saves time and energy.