Edge-carboxylated graphene nanosheets via ball milling.

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ID: 72805
2012
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Ranked #187 of 292 articles by views in Proceedings of the National Academy of Sciences of the United States of America

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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 (CO(2)-capturing) approaches to low-cost mass production of high-quality GNs for applications where GOs have been exploited and beyond.
Reference Key
jeon2012edgecarboxylatedproceedings Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Jeon, In-Yup;Shin, Yeon-Ran;Sohn, Gyung-Joo;Choi, Hyun-Jung;Bae, Seo-Yoon;Mahmood, Javeed;Jung, Sun-Min;Seo, Jeong-Min;Kim, Min-Jung;Wook Chang, Dong;Dai, Liming;Baek, Jong-Beom;
Journal Proceedings of the National Academy of Sciences of the United States of America
Year 2012
DOI
10.1073/pnas.1116897109
URL
Keywords
interdigitation porous organic crystals single-crystals solid-state reactions superstructures

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