Journal
CARBON
Volume 68, Issue -, Pages 167-174Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2013.10.076
Keywords
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Funding
- Senior Visiting Scholar Program of Fudan Univ., National Basic Research Program of China [2011CB605702]
- NSF of China [50573014, 50773012, 51173027]
- Shanghai Nanotechnology Program [1052nm00400]
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Future composite applications will require dimensional control of graphene microsheets (GMs) to optimize structure and performance. However, realizing this goal in a high yield, cost-effective manner is presently a major challenge. We here demonstrate a simple approach to prepare single-layer GMs with a yield of >90% by one-step hydrothermal treatment of graphene oxide sheets. The addition of poly(vinyl pyrrolidone) is critical for producing single-layer GMs with specific sheet sizes and does not significantly affect the hydrothermal cutting of GMs. Using hydrothermal treatment under different conditions, the lateral dimensions of the single-layer GMs can be tuned to yield specific surface areas over a range of similar to 3.5 orders of magnitude, from 30 to 9 x 10(-3) mu m(2). (C) 2013 Elsevier Ltd. All rights reserved.
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