Fractionation of graphene oxides by size-selective adhesion with spherical particles
- Authors
- Kim, Sinwoo; Lee, Jonghwi; Lee, Sang-Soo
- Issue Date
- Dec-2016
- Publisher
- SPRINGER
- Keywords
- fractionation; large-area grapheme; graphene oxide; sphere-plate adhesion; electrostatic interaction
- Citation
- MACROMOLECULAR RESEARCH, v.24, no.12, pp 1098 - 1104
- Pages
- 7
- Journal Title
- MACROMOLECULAR RESEARCH
- Volume
- 24
- Number
- 12
- Start Page
- 1098
- End Page
- 1104
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/6403
- DOI
- 10.1007/s13233-016-4146-x
- ISSN
- 1598-5032
2092-7673
- Abstract
- 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.
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Collections - College of Engineering > School of Chemical Engineering and Material Science > 1. Journal Articles
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