Kim, Sinwoo Lee, Jonghwi Lee, Sang-Soo 2024-01-20T02:34:09Z 2024-01-20T02:34:09Z 2022-01-25 2016-12 1598-5032 https://pubs.kist.re.kr/handle/201004/123344 Preparation of graphene has suffered from poor controllability of its lateral dimensions and the lack of sufficient fractionation technologies-the main barriers to its large-scale commercialization. This situation requires the development of an effective size fractionation strategy. Herein, the size-selective adsorption of graphene oxide (GO) onto positively charged spheres was developed as a novel size fractionation method. A critical lateral size of GO existed, above which physical adsorption was not stable, possibly because of the mechanical deformation involved. This scalable fractionation process easily produces well-dispersed GO sheets of relatively large lateral sizes, apart from the relatively small-sized GO sheets that are stably anchored onto the spherical particles. Moreover, this process is energy efficient and does not require any special equipment. This fractionation principle, size-selective adsorption, can be generalized to other various 2D nanomaterials. English POLYMER SOC KOREA Fractionation of graphene oxides by size-selective adhesion with spherical particles Article 10.1007/s13233-016-4146-x 1 MACROMOLECULAR RESEARCH, v.24, no.12, pp.1098 - 1104 MACROMOLECULAR RESEARCH 24 12 1098 1104 N scie scopus kci ART002176490 000391354900009 2-s2.0-84994719233 Polymer Science Polymer Science Article TRANSPARENT SHEETS FABRICATION FILMS fractionation large-area grapheme graphene oxide sphere-plate adhesion electrostatic interaction