Abstract:The BP and GO were dispersed by liquid-phase stripping technique. By covalent bonding, BP-GO composite carrier was prepared. AgNPs were reduced in situ on the surface of BP-GO composite carrier by redox method.The effects of silver nitrate content and BP-GO content ratio on the properties of composite powders were investigated, and the antibacterial properties of BP-GO-AgNPs and GO-AgNPs composite coatings prepared under the same conditions were compared and analyzed.SEM and TEM analysis showed that BP and GO were successfully dispersed, BP-GO carrier was successfully combined, and AgNPs were successfully loaded on the carrier surface,with the optimal AgNO3 dosage parameter was 3×10-4mol.XPS analysis showed that BP-GO-AgNPs composite powders were successfully prepared by the joint of P-C and P-O-C, and the AgNPs were successfully loaded on the surface of the carrier.Raman analysis showed that the optimal ratio of BP-GO content in the composite powder was 1:1.The antibacterial results showed that the BP-GO-AgNPs composite coating had better antibacterial effect than the GO-AgNPs composite coating under the same conditions.