Production of Graphene Sheets by Direct Dispersion with Aromatic Healing Agents (pages 1100–1107)
Ming Zhang, Rishi R. Parajuli, Daniel Mastrogiovanni, Boya Dai, Phil Lo, William Cheung, Roman Brukh, Pui Lam Chiu, Tao Zhou, Zhongfan Liu, Eric Garfunkel and Huixin He
Article first published online: 6 MAY 2010 | DOI: 10.1002/smll.200901978
A simple and scalable exfoliation approach is developed to produce high-quality single-layer graphene sheets without the use of toxic reduction agents of expensive solvents. Graphite powders are exfoliated in a water solution of pyrene derivatives, which act as dispersion agents, healing agents, and electric “glue” during the thermal annealing process.