Open AccessDirect growth of carbon microfibres on SiO 2 particles by chemical vapour deposition from ethanol
Author(s) -
Wang Feng,
Qin Xiaofang,
Yang Lixia,
Gao Shanmin,
Wang Qingyao,
Yang Zhenglong
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2018.5068
Subject(s) - raman spectroscopy , scanning electron microscope , chemical vapor deposition , carbon fibers , catalysis , transmission electron microscopy , chemical engineering , materials science , deposition (geology) , nanotechnology , inorganic chemistry , chemistry , composite material , organic chemistry , composite number , optics , paleontology , physics , engineering , sediment , biology
Carbon microfibres (CMFs) were synthesised on SiO 2 particles by catalytic chemical vapour deposition at 1200°C using ethanol as carbon precursor, iron nitrate as the catalyst precursor, and nitrogen as a carrier gas. The structure and morphology of the products were characterised by X‐ray diffraction, scanning electron microscopy, high‐resolution transmission electron microscopy and Raman spectroscopy. CMFs obtained after a deposition time of 5 h have a diameter of 5–10 μm and a length of a few hundred micrometres. In the deposition process, Fe–Si–O–C droplets were first formed on the surface of SiO 2 particles, and then carbon fibres grew as a result of the catalysis of the droplets. Carbon fibres have the higher graphitic structures when the deposition process is conducted at 1200°C.