▎ 摘　　要

NOVELTY - Observation based on shooting graphene oxide/carbon nano-tube composite film section map comprises when testing the section shape of graphene oxide/carbon nano-tube composite film, firstly taking out the graphene oxide carbon nano-tube composite film and putting into 100degrees Celsius hot water to soak then putting into liquid nitrogen, repeating and then drying, putting into carbon spraying device, after spraying the carbon, taking out the graphene oxide/carbon nano-tube composite film and putting into a scanning electron microscope for measuring sample. USE - Method for observation based on shooting graphene oxide/carbon nano-tube composite film section map used in industrial waste water deep purification and recycling technology. ADVANTAGE - The method provides a clear and accurate shape at the cross-section of the functional layer of the graphene oxide/carbon nanotube composite film, enhances the cross-linking performance and stability.