Method for preparing MXene-graphite circular ring stacked carbon nanotube by using low-temperature vacuum CVD (chemical vapor deposition)

• Main Authors: ZHANG SHENGTAO, LI MENG, TIAN DONGJUN, WANG YANXIANG, FENG MEIJUN, ZHU HUI, QU HENGHUI, WANG JUNGANG
• Format: Patent
• Language: Chinese; English
• Published: 23.09.2022
• Subjects: CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMISTRY; COMPOUNDS THEREOF; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; INORGANIC CHEMISTRY; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PRINTED CIRCUITS; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING

The invention discloses a method for preparing MXene-graphite circular ring stacked carbon nanotubes by using low-temperature vacuum CVD (chemical vapor deposition), which comprises the following steps: adding Ti3AlC2 powder into LiF and a hydrochloric acid solution, and stirring; then centrifuging, washing and drying to obtain MXene powder; the preparation method comprises the following steps: immersing MXene powder into a mixed solution composed of ethanol and nickel nitrate hexahydrate, separating out MXene precipitate after immersion, and drying the MXene precipitate; and then placing in a CVD furnace and vacuumizing, introducing inert protective gas, heating, then injecting hydrogen and acetylene, and carrying out heat preservation to obtain the MXene-graphite circular ring stacked carbon nanotube material. According to the invention, oxygen is isolated by using a low-temperature vacuum CVD process, the oxidation process of MXene is inhibited, the structure of MXene is prevented from being violently dama