▎ 摘　　要

NOVELTY - Preparing graphene and carbon nanotube synergistically modified membrane electrode comprises e.g. dispersing graphene oxide in absolute ethanol, perfroming ultrasonication and adding aminosilane coupling agent to obtain silane-modified graphene, then dispersing carbon nanotubes in a absolute ethanol, adding Fenton reagent for hydroxylation treatment, then perfroming ultrasonication to obtain dispersion, adding aminosilane coupling agent and reacting to obtain silane-modified carbon nanotubes, dissolving the perfluorosulfonic acid ion exchange resin in an organic solution, adding modified graphene and carbon nanotubes under stirring and perfroming ultrasonication to obtain mixture of doped graphene and graphene, taking tetrafluoroethylene container, placing SPE film on the bottom layer and pouring mixture of doped graphene and carbon nanotubes on the SPE film, and volatilizing the solvent to forming composite film having bottom layer of SPE film. USE - The method is useful for preparing graphene and carbon nanotube synergistically modified membrane electrode. ADVANTAGE - The modified membrane electrode has better catalytic effect, and improved ozone generation efficiency and graphene and carbon nanotubes are added. DETAILED DESCRIPTION - Preparing graphene and carbon nanotube synergistically modified membrane electrode comprises (i) taking graphene oxide, dispersing in a absolute ethanol, perfroming ultrasonication for 1-30 minutes at a certain power to obtain 1-15 g/l dispersion, adding aminosilane coupling agent, reacting under mechanical stirring for 1-12 hours at a stirring speed of 400-800 revolutions/minute to obtain silane-modified graphene, (ii) dispersing carbon nanotubes in a absolute ethanol, adding Fenton reagent for hydroxylation treatment, then perfroming ultrasonication for 5-10 minutes to obtain 0.5-8g/l dispersion, adding aminosilane coupling agent, and reacting under mechanical stirring for 1-12 hours at a stirring speed of 400-800 revolutions/minute to obtain silane-modified carbon nanotubes, (iii) dissolving the perfluorosulfonic acid ion exchange resin in an organic solution, slowly adding the modified graphene and the carbon nanotubes under stirring, and then ultrasonication for 5-20 minutes to obtain mixture of doped graphene and graphene, (iv) taking tetrafluoroethylene container, placing SPE film on the bottom layer, and pouring the mixture of doped graphene and carbon nanotubes on the SPE film, and volatilizing the solvent to forming composite film having bottom layer of an SPE film and upper layer of an exchange film layer containing graphene and carbon nanotubes, (v) adding 0.1-1 mol/l lead(II) nitrate and 5-200 mmol/l sodium fluoride into impregnation liquid, the composite membrane obtained in the step (iv) is laid flat, and immersing exchange membrane layer containing graphene and carbon nanotubes in the immersion liquid for 1-10 hours and washing with deionized water to obtain composite film after immersion, and (vi) preparing 1-6 mol/l sodium hydroxide or potassium hydroxide solution, and placing impregnated composite membrane in a solution, adding oxidizing agent and oxidizing for 1-5 hours to obtain composite film deposited with beta -lead(IV) oxide.