Lantern ring-shaped silicon carbide nanofiber aerogel material and preparation method thereof

• Main Authors: LI WENJING, LIU YUANYUAN, HE LIJUAN, HUANG HONGYAN, ZHANG WANLIN
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to a lantern ring-shaped silicon carbide nanofiber aerogel material and a preparation method thereof.The method comprises the steps that silicon powder, silicon dioxide aerogel powder doped with metal oxide nanoparticles and carbon powder are subjected to a chemical vapor deposition reaction, and lantern ring-shaped silicon carbide nanofibers are obtained; uniformly dispersing the lantern ring-shaped silicon carbide nanofibers with water, and then performing liquid nitrogen freezing to obtain nanofiber gel; the nanofiber gel is sequentially subjected to freeze drying and annealing treatment, and the lantern-ring-shaped silicon carbide nanofiber aerogel material is obtained. The lantern-ring-shaped silicon carbide nanofiber aerogel prepared by the method is aerogel constructed by nanofibers with complex surface structures, the nanofibers with the complex surface structures are formed in the mode that nanofiber trunks are in the one-dimensional length direction, a series of nano lantern ri