载银抗菌材料在载人航天水处理任务中的应用前景OA北大核心CSTPCD

Silver has advantages of broad-spectrum antibacterial activity and low toxicity without drug resistance,making it a preferred antimicrobial agent for water treatment systems in long-term manned space missions.This article first introduced the antibacterial mechanism of silver,classified silver-carrying antibacterial materials by antimicrobial agents and carrier materials,focused on the sustained release performance of silver-carrying materials and summarized the current approaches to enhancing the sustained release performance from three perspectives:optimization of silver ion loading,pretreatment of carrier materials and optimization of loading preparation processes.According to the applications of silver-loaded materials in water treatment projects,the sustained release performances of silver-loaded materials were not well with low release concentration of silver ion.For long-term manned space missions,the sterilization and antibacterial activity in water treatment systems were crucial.To meet these requirements,silver-loaded antibacterial materials should achieve long-term stable release of silver ion,and the carrier should remain stable with no secondary pollutants dissolved and also could withstand the mechanical conditions of space launch at the same time.If it achieved,it would serve as backup for electrolytic release of silver using in space station,and also be considered for uses in multi-scenario antibacterial sterilization in China's long-term manned space missions.