Abstract
Small-angle x-ray scattering, nitrogen adsorption, and scanning tunneling microscopy show that a series of activated carbons host an extended fractal network of channels with dimension (pore fractal), channel width (lower end of scaling), network diameter (upper end of scaling), and porosity of 0.3–0.6. We interpret the network as a stack of quasiplanar invasion percolation clusters, formed by oxidative removal of walls between closed voids of diameter of and held in registry by fibrils of the biological precursor, and point out unique applications.
- Received 11 January 2001
DOI:https://doi.org/10.1103/PhysRevLett.88.115502
©2002 American Physical Society