Microstructure and bactericidal properties of Cu-MOF, Zr-MOF and Fe-MOF

Abstract

Materials derived from metal-organic frameworks (MOFs) have found extensive applications in various antimicrobial uses in recent years. Transition metals have undergone extensive research due to their exceptional efficiency, low toxicity, and affordability. In this paper, three typical transition metal MOFs, copper (Cu-MOF), iron (Fe-MOF) and zirconium (Zr-MOF), are characterized in detail microscopically and their antimicrobial properties are systematically compared. The synthesis and microstructure of MOFs were validated using various instruments, such as SEM and PXRD. The investigation into bacterial (E. coli) test results revealed that the bactericidal effects of Cu-MOF, Fe-MOF, and Zr-MOF followed a descending order. Furthermore, the solution containing Cu-MOF displayed zero colonies in the same environment, demonstrating a 100% lethality against E. coli, a result significantly higher than the other two groups. Nevertheless, Fe-MOF and Zr-MOF exhibited an increase in antimicrobial properties of 2.47% and 73.56%, respectively, after exposure to light, both of which still demonstrated outstanding bactericidal effects.

Keywords

metal-organic framework(MOF) / bactericidal performance / microstructure / organic synthesis

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