▎ 摘　　要

NOVELTY - Preparing 3D graphene oxide composite photocatalytic aerogel based on solid phase reduction comprises e.g. (i) preparing graphene oxide solution by the improved Hummers method, adding graphene oxide solution into water, and ultrasonically dispersing to obtain suspension A, (ii) adding multi-walled carbon nanotubes into the suspension A, and ultrasonically stirring to disperse uniformly to obtain suspension B, where the mass ratio of graphene oxide and multi-walled carbon nanotubes in the suspension B is 1:(0.1-0.5), and (iii) adding potassium bromide solution into the suspension B, dropping silver nitrate solution under the condition of ultrasonic stirring to obtain suspension C, where the mass ratio of graphene oxide to potassium bromide is 1:(0.5-2.5), the mass ratio of graphene oxide and silver nitrate is 1:(0.7-3.5). USE - The method is useful for preparing 3D graphene oxide composite photocatalytic aerogel based on solid phase reduction. ADVANTAGE - The method solves problem that the existing three-dimensional graphene gel composite nano catalytic material is prepared by reducing self-organization of graphene in water, volume of graphene gel shrinks, shape is uncontrollable, and the amount of reducing agent is high. DETAILED DESCRIPTION - Preparing 3D graphene oxide composite photocatalytic aerogel based on solid phase reduction comprises (i) preparing graphene oxide solution by the improved Hummers method, adding graphene oxide solution into water, and ultrasonically dispersing to obtain suspension A, (ii) adding multi-walled carbon nanotubes into the suspension A, and ultrasonically stirring to disperse uniformly to obtain suspension B, where the mass ratio of graphene oxide and multi-walled carbon nanotubes in the suspension B is 1:(0.1-0.5), (iii) adding potassium bromide solution into the suspension B, dropping silver nitrate solution under the condition of ultrasonic stirring to obtain suspension C, where the mass ratio of graphene oxide to potassium bromide is 1:(0.5-2.5), the mass ratio of graphene oxide and silver nitrate is 1:(0.7-3.5), and (iv) adding ascorbic acid into suspension C, stirring uniformly, freezing in low-temperature ethanol with temperature of -60 to -80degrees Celsius, freezing and drying, placing at 90-120degrees Celsius, and carrying out chemical reduction for 12-36 hours to obtain product, where the mass ratio of the ascorbic acid to the graphene oxide in the suspension C is 1:(0.25-1.5).