The invention relates to a preparation method of filter tip fibers for selectively adsorbing
benzopyrene and
phenol. The preparation method comprises the steps of firstly, performing oxidation treatment on
graphite to obtain
graphene oxide, performing ultrasonic treatment on the
graphene oxide to prepare an
aqueous solution or preparing a mixed
aqueous solution from the
graphene oxide with
chitosan, next, dipping the fibers into the
aqueous solution of the graphene oxide or in the
mixed solution of the graphene oxide and the aqueous solution of the
chitosan,
drying in vacuum for 6 hours at 80 DEG C, and finally, obtaining the filter tip fibers. According to the preparation method, the
chitosan is evenly attached on the surface of the fibers and a remarkable effect of reducing
phenol harmful substances can be achieved. Meanwhile, due to strong Pi-
Pi interaction between the graphene and the
benzopyrene, the graphene modified filter tip is capable of effectively retaining the strong carcinogenic substance
benzopyrene in the
smoke of cigarette. The preparation method is simple, relatively high in efficiency and low in environmental
pollution; meanwhile, the fibers can be modified after the graphene and the chitosan are compounded, and the synergistic effect of the graphene and the chitosan in removing arene harmful substances can be developed; as a result, the preparation method has favorable application prospect.