▎ 摘　　要

NOVELTY - Graphene nanofiber hollow filter rod comprises support skeleton tube and a filter material layer wrapped around the support skeleton tube. The filter material layer comprises 30.0-35.0 pts. wt. graphene nanofibers, 8.0-10.0 pts. wt. polylactic acid fibers, 0.8-1.3 pts. wt. calcium carbonate, 3.2-3.8 pts. wt. modified nano titanium dioxide, and 2.0-2.5 pts. wt. ethyl cellulose. USE - Graphene nanofiber hollow filter rod. ADVANTAGE - The graphene nanofiber hollow filter rod has a hollow structure, a large specific surface area, high efficiency filtration, good heat resistance, stability and durability, high safety and long service life. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a graphene nanofiber hollow filter rod, which involves: (A) shearing graphene nanofibers and polylactic acid fibers and dispersing in deionized water for 30-40 minutes, and adding calcium carbonate, modified nano titanium dioxide and ethyl cellulose, shearing for 20-30 minutes to obtain a mixture; and (B) coating mixture with negative pressure on the support skeleton tube to form a filter material layer, and hot-pressing filter material layer to obtain the graphene nanofiber hollow filter rod.