Open AccessCarbon Nanotube Synthesis via the Calciothermic Reduction of Carbon Dioxide with Iron Additives
Author(s) -
Takeshi Kikuchi,
Renata Leiko Ishida,
Shungo Natsui,
T. Kumagai,
Isao Ogino,
Norihito Sakaguchi,
Mikito Ueda,
Ryosuke O. Suzuki
Publication year - 2015
Publication title -
ecs solid state letters
Language(s) - English
Resource type - Journals
eISSN - 2162-8742
pISSN - 2162-8750
DOI - 10.1149/2.0031509ssl
Subject(s) - materials science , graphite , carbon nanotube , electrolysis , anode , nanocomposite , cementite , carbon fibers , molten salt , cathode , chemical engineering , carbon dioxide , electrochemical reduction of carbon dioxide , inorganic chemistry , catalysis , nanotechnology , electrode , composite material , metallurgy , composite number , organic chemistry , carbon monoxide , electrolyte , chemistry , austenite , microstructure , engineering
The novel fabrication of multi-walled carbon nanotube (MWCNT)/cementite (Fe3C) nanocomposites was demonstrated via the calciothermic reduction of carbon dioxide (CO2) through electrolysis in molten CaCl2/CaO with iron additives at 1173 K. In this technique, CO2 generated from a graphite anode is reduced to carbon with a metallic calcium reductant formed on a graphite cathode via electrolysis in molten salt. Calciothermic reduction without iron additives resulted in the formation of onion-like carbons (OLCs) with spherical graphite layers and thin graphite sheets. In contrast, MWCNT/Fe3C nanocomposites and OLCs were successfully fabricated via calciothermic reduction with iron additives through their catalytic activities
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