Anomalously stable dispersions of graphite in water/acetone mixtures

Highly stable dispersions of graphite are obtained in water/acetone mixtures, while graphite precipitates promptly in water and in acetone. We found that acetone facilitates disintegration of the graphite particles and their aggregates during a sonication process. Fine graphite particles are stabilised by the electrostatic repulsion due to negative charges on the graphite particle surfaces.

Highly stable dispersions of graphite are obtained in water/acetone mixtures, while graphite precipitates promptly in water and in acetone.Figure optionsDownload high-quality image (69 K)Download as PowerPoint slide