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Vapor grown carbon nanofibers (Pyrograf III(TM)) with 100-300 nm diameters and ~10-100 μm lengths were oxidized in 69-71 wt.% nitric acid (115 o C) for various times (10 min to 24 h). These fibers were remarkably oxidation-resistant. XPS (O 1s ) showed that the surface atomic oxygen percent increased from 6.3 to 18.3-22.5% for 10-90 min oxidations followed by a drop to 14-15%...
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