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公开(公告)号:US10005957B2
公开(公告)日:2018-06-26
申请号:US15563406
申请日:2015-12-31
发明人: Xiaoying Wang , Xiaoyun Li , Runcang Sun , Weijie Ye , Weimin Chen
IPC分类号: C01B32/20 , C09K11/65 , B82Y30/00 , B01J21/18 , C01B32/205
CPC分类号: C09K11/65 , B01J21/18 , B82Y30/00 , B82Y40/00 , C01B32/184 , C01B32/205
摘要: A porous graphene, a graphene quantum dot and a green preparation method for the porous graphene and the graphene quantum dot. The method includes adding a starting material, graphite, into an acetic acid aqueous solution of chitosan, using chitosan as a stripping agent, obtaining the porous graphene by an ultrasonic treatment, centrifugation and precipitation, and obtaining the graphene quantum dot by dialyzing a supernatant from the centrifugation. The obtained porous graphene has fewer layers and a larger lateral dimension of sheet. The obtained graphene quantum dot has good dispersity and a uniform particle size distribution. The preparation method is simple to perform and a graphitization degree of the prepared porous graphene and graphene quantum dot is high. The obtained porous graphene can be used as a carrier for a reverse gene transfection, and the graphene quantum dot can be used for cell imaging.