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Baek, Jong-Beom
Center for Dimension-Controllable Organic Frameworks
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Edge-carboxylated graphene nanosheets via ball milling

Author(s)
Jeon, In-YupShin, Yeon-RanSohn, Gyung-JooChoi, Hyun-JungBae, Seo-YoonMahmood, JaveedJung, Sun-MinSeo, Jeong-MinKim, Min-JungChang, Dong WookDai, LimingBaek, Jong-Beom
Issued Date
2012-04
DOI
10.1073/pnas.1116897109
URI
https://scholarworks.unist.ac.kr/handle/201301/3096
Fulltext
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84859620458
Citation
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, v.109, no.15, pp.5588 - 5593
Abstract
Low-cost, high-yield production of graphene nanosheets (GNs) is essential for practical applications. We have achieved high yield of edge-selectively carboxylated graphite (ECG) by a simple ball milling of pristine graphite in the presence of dry ice. The resultant ECG is highly dispersable in various solvents to self-exfoliate into single-and few-layer (<= 5 layers) GNs. These stable ECG (or GN) dispersions have been used for solution processing, coupled with thermal decarboxylation, to produce large-area GN films for many potential applications ranging from electronic materials to chemical catalysts. The electrical conductivity of a thermally decarboxylated ECG film was found to be as high as 1214 S/cm, which is superior to its GO counterparts. Ball milling can thus provide simple, but efficient and versatile, and eco-friendly (CO2-capturing) approaches to low-cost mass production of high-quality GNs for applications where GOs have been exploited and beyond.
Publisher
NATL ACAD SCIENCES
ISSN
0027-8424
Keyword (Author)
carbon dioxideeco-friendlyedge-functionalizationgraphite

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