▎ 摘　　要

NOVELTY - A core-shell pollen silicon-loaded metal antibacterial agent modified microfiltration membrane comprises 30-40 pts. wt. pollen silicon, 20-25 pts. wt. metal acetate, 10-15 pts. wt. nano graphene oxide, 6-9 pts. wt. sodium alginate, 5-10 pts. wt. chitosan quaternary ammonium salt, 3-7 pts. wt. tannic acid and 5-8 pts. wt. trisodium citrate. USE - Core-shell pollen silicon-loaded metal antibacterial agent modified microfiltration membrane used in chemical industry, energy, food, medical treatment and environmental protection applications. ADVANTAGE - Since silicon source and phenolic resin are utilized to synthesize pollen silicon with spherical structure, and is doped with sodium alginate, chitosan quaternary ammonium salt, and nano-graphene oxide, the porosity of the shell as core-shell structure antibacterial agent is effectively improved, and the chitosan quaternary ammonium salt chelates with metal ions to increase the stability of the loaded metal. The loading rate of metal acetate serving as antibacterial active ingredient as core is effectively increased, and the antibacterial performance of finally prepared microfiltration membrane is effectively improved. The special surface morphology of pollen silicon significantly increases the loading of nano metal on the surface of the membrane, effectively controls the release rate of metal ions, and extends the service life of composite membranes. Since the pollen silicon has large specific surface area and many voids, and more active sites (such as -OH, -O-) are coordinated with metal ions through coordination bonds, and more nano-metals are loaded onto the membrane, thereby improving the antibacterial ability of separation membrane, and preventing more metal ions from being chemically bound to the free ion state, thereby delaying the release rate of silver ions and prolonging the service life of the separation membrane. The self-prepared microfiltration membrane has smooth surface, enhanced stability and water resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for preparing core-shell pollen silicon-loaded metal antibacterial agent modified microfiltration membrane.