| abstract |
The invention discloses a nano-silver material mediated and synthesized by moringa seed extract. The nano silver material is in a spherical core-shell structure, the inside of the nano silver material is aggregated silver ions, and the outside of the nano silver material is covered with a moringa seed extract. The particle size range of the nano silver material synthesized by the moringa seed extract and the silver nitrate is 3.8-31.0 nm, the average particle size is 9.8nm, the nano silver material has good antibacterial activity on gram-positive bacteria represented by staphylococcus aureus and gram-negative bacteria represented by escherichia coli and pseudomonas aeruginosa, the maximum inhibition zones can respectively reach 14.6mm, 30.6mm and 22.8mm, the nano silver material also has excellent antioxidant activity, the scavenging rate of DPPH free radicals is more than 75%, the nano silver material has excellent photocatalytic degradation performance, the nano silver material has good catalytic degradation performance on Congo red and methylene blue, the degradation rate is more than 80%, and the nano silver material can be widely applied to removal of organic dyes in wastewater. |