Carbon nanopipes and ductwork with nanometric walls and methods of making the same

摘要

A carbon nanopipe comprising a durable graphitizable carbon wall of tunable thickness of about 10-500 nm formed by exposing a silica fiber network to a carbon precursor vapor and thereby depositing a carbon film onto the silica fiber network at a temperature suitable for complete pyrolysis of the carbon precursor and removing the silica fibers. The atmosphere of the step of depositing is controlled by a two-stage gas manifold wherein stage 1 purges the reaction chamber with pure argon and stage 2 introduces the carbon precursor.

主权项

1. An array of carbon nanopipes comprising:
a carbon nanopipe comprising a durable graphitizable carbon wall of thickness of about 10-500 nm formed by exposing a silica fiber network to a carbon precursor vapor and thereby depositing a carbon film onto the silica fiber network at a temperature suitable for complete pyrolysis of the carbon precursor and removing the silica fibers; further including an array or aperiodic ensemble of multiple said carbon nanopipes formed by deposition onto the fiber network; wherein the silica fibers are three-dimensionally interwoven fibers having diameters of about <1 μm; wherein the array of multiple carbon nanopipes comprises said carbon nanopipes that are three-dimensionally interwoven; wherein the carbon precursor is selected from the group consisting of benzene, naphthalene, and acetonitrile; and wherein said carbon nanopipes have an outer diameter >100 nm.