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Dai, Liming
Dr. Liming Dai's Group
Research Interests
  • Synthesis

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Edge-carboxylated graphene nanosheets via ball milling

Cited 76 times inthomson ciCited 55 times inthomson ci
Title
Edge-carboxylated graphene nanosheets via ball milling
Author
Jeon, In-YupShin, Yeon-RanSohn, Gyung-JooChoi, Hyun-JungBae, Seo-YoonMahmood, JaveedJung, Sun-MinSeo, Jeong-MinKim, Min-JungChang, Dong WookDai, LimingBaek, Jong-Beom
Keywords
Carbon dioxide; Eco-friendly; Edge-functionalization; Graphite
Issue Date
201204
Publisher
NATL ACAD SCIENCES
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.
URI
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DOI
http://dx.doi.org/10.1073/pnas.1116897109
ISSN
0027-8424
Appears in Collections:
ECHE_Journal Papers
MNE_Journal Papers

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