▎ 摘　　要

NOVELTY - Preparing GYSNs filled polyurethane hybrid membrane comprises (a1) mixing the graphene oxide (GO), polyvinylpyrrolidone and the first solvent, stirring, adding aqueous ammonia and ethyl orthosilicate, stirring for 5-7 hours at 25-35 degrees C, centrifuging, washing, (a2) dispersing the GO@silica in 25-35 ml deionized water to obtain the GO@silica suspension, mixing suspension with the second solvent, adding formaldehyde, resorcinol, ethylene diamine and ethyl orthosilicate, stirring at 35-45 degrees C for 23-25 hours, centrifuging and (a3) drying the GO@silica@PB/silica at 55-65 degrees C for 10-14 hours, introducing inert gas, carbonizing for 3.5-4.5 hours at 780-820 degrees C, soaking, washing and (b) dispersing the GYSNs in tetrahydrofuran solvent, stirring for 20-40 minutes, adding polyurethane (PU), continuously stirring for 22-24 hours, degassing for 20-40 minutes to obtain the casting solution and pouring into the culture dish at room temperature to be volatilized completely. USE - The method is useful for preparing GYSNs filled polyurethane hybrid membrane. ADVANTAGE - The method fills the GYSNs into the PU matrix, which can reduce the swelling of the membrane and improve the desulfurization ability of the polyurethane membrane. The membrane has a high thiophene separation ability while maintaining a high permeation flux. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a GYSNs filled polyurethane hybrid membrane prepared by the above preparation method.