▎ 摘　　要

NOVELTY - A shell powder based dry powder type ecological inner wall coating comprises 30-50 wt.% shell powder with grain diameter of 500-1300 mesh, 10-20 wt.% kaolin, 10-0 wt.% light calcium carbonate, 10-20 wt.% nanosilicon dioxide, 1-10 wt.% titania-bismuth vanadate-graphene ternary nanocomposite material and 10-20 wt.% adhesive powder. USE - Shell powder based dry powder type ecological inner wall coating used for room decoration. ADVANTAGE - The coating has good physical mechanical performance, beautiful appearance, UV visible light photocatalytic function and bacteriostasis, sterilization and antistatic functions, absorbs and decomposes harmful gas and peculiar smell, solves high cost of indoor air purifying material, large energy consumption and low utilization ratio of visible light problems.