Sinopec’s patent for “a carbon nanotube array-modified graphene fiber and its preparation method and use” was announced

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According to data from Tianyancha APP, Sinopec (600028) has newly obtained an invention patent authorization. The patent is titled "A carbon nanotube array-modified graphene fiber and its preparation method and use". The patent application number is CN202311352865.X, and the authorization date is February 24, 2026. Patent abstract: The invention provides a carbon nanotube array-modified graphene fiber and its preparation method and use, which belongs to the technical field of solid-phase microextraction. Through an ionic liquid-assisted wet spinning method, a metal-organic framework is directionally grown, and the carbon nanotube array-modified graphene fiber is prepared through pyrolysis. The carbon nanotube array-modified graphene fiber of the present invention has a "stem" structure, with an ordered carbon nanotube array growing on the surface of the "stem". It is a graphene solid-phase microextraction material modified based on a metal-organic framework-derived carbon nanotube array, and has efficient enrichment capabilities for benzene series (including benzene, toluene, ethylbenzene, p-xylene and m-xylene). The carbon nanotube array-modified graphene fiber of the present invention has a detection linear range of 0.2 to 600 μg/L, a minimum detection limit of 0.005 to 0.03 mg/L, and has the characteristics of high stability and strong extraction ability.