Nearly Space-Filling Fractal Networks of Carbon Nanopores

Autor:	T. P. Rieker, Paul W. Schmidt, W. P. Hoffman, Daniel J. Voss, Francisco Rodríguez-Reinoso, Peter Pfeifer, Françoise Ehrburger-Dolle, Miguel Molina-Sabio, M.T. González
Rok vydání:	2002
Předmět:	Materials science Scattering General Physics and Astronomy chemistry.chemical_element Nanotechnology law.invention Nanopore Fractal chemistry Stack (abstract data type) Chemical physics law Scanning tunneling microscope Porosity Carbon Scaling
Zdroj:	Physical Review Letters. 88
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.88.115502
Popis:	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 D(p) = 2.8-3.0 (pore fractal), channel width 15-20 A (lower end of scaling), network diameter 3000-3400 A (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 approximately 10 A and held in registry by fibrils of the biological precursor, and point out unique applications.
Databáze:	OpenAIRE
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