In situ growth of carbon nanotubes on graphene oxide fibers by thermal chemical vapor deposition
COMPOSITES AND ADVANCED MATERIALS(2022)
Abstract
Aqueous graphene oxide (GO) dispersion was used to produce fibers by wet spinning technique. In situ growth of carbon nanotubes (CNTs) in the graphene fibers was realized by chemical vapor deposition (CVD) of the obtained graphene oxide GO fibers with a diameter about 30 mu m using acetylene as precursor gas. Carbon nanotubes with diameters of 107 and 407 nm were found in the resulted graphene fiber (GF) with creation of active nucleation sites as reduction oxygen containing groups in the GO sheets during the CVD process. XPS and Raman spectroscopy results combined with SEM image confirmed the conversion of the GO fibers to the CNTs/GF.
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Key words
graphene oxide,carbon nanotube,composite fiber,chemical vapor deposition
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