Method of removing carbonaceous impurities in carbon nanotubes
AssigneeSamsung Electronics Co., Ltd.
InventorsEun-Ju Bae, Yo-Sep Min, Wan-Jun Park
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Abstract
A method of selectively removing carbonaceous impurities from carbon nanotubes (CNTs). In an example method, impurities formed on the surface of the CNTs may be removed by a sulfidation reaction between the impurities and sulfur in a sealed space. More specifically, a method of selectively removing only amorphous carbon by which carbon nanotube walls do not react with sulfur and only carbonaceous impurities formed on the surface of the CNTs make sulfidation reaction (C+2S→CS2), that is, a method of selectively removing carbonaceous impurities from the CNTs integrated in a device by sulfidation is provided.
Claims11
A method of removing carbonaceous impurities in a carbon nanotube, the method comprising:
- preparing sulfur and carbon nanotubes in a sealed space, the sulfur being in a solid state;
- and
- sulfiding a surface of the carbon nanotubes to remove carbonaceous impurities formed on the carbon nanotubes,
- wherein the sulfiding includes heating the sulfur and the carbonaceous impurities above a temperature to induce a sulfidation reaction between the sulfur and the carbonaceous impurities and removing carbon disulfide (CS2) resulting from the sulfidation reaction of sulphuric evaporated gas and the carbonaceous impurities formed on the surface of the carbon nanotubes.
A method of removing carbonaceous impurities in carbon nanotube, the method comprising:
- preparing sulfur and a device in which carbon nanotubes are integrated, in a sealed space, the sulfur being in a solid state;
- and
- sulfiding a surface of the carbon nanotubes to remove carbonaceous impurities formed on the carbon nanotubes,
- wherein the sulfiding includes heating the sulfur and the carbonaceous impurities above a temperature to induce a sulfidation reaction between the sulfur and the carbonaceous impurities and removing carbon disulfide (CS2) resulting from the sulfidation reaction of sulphuric evaporated gas and the carbonaceous impurities formed on the surface of the carbon nanotubes.
Dependencies are inferred from the claim text.