A Comprehensive Study on Enhancing Microbicidal Activity of Pure and Ion-Exchanged Zeolites Through Structural and...

Area of Science:

• Materials Science
• Nanotechnology
• Microbiology

Background:

• Zeolites are porous aluminosilicate materials with inherent antimicrobial properties.
• Their efficacy is limited at high concentrations, necessitating modifications for enhanced activity.

Purpose of the Study:

• To review the antibacterial activity of natural and synthetic zeolites.
• To assess the impact of metal ion modification on zeolite antimicrobial performance.

Main Methods:

• Comprehensive literature review on zeolite antibacterial activity.
• Focus on metal-ion exchanged zeolites (Ag, Cu, Zn).
• Evaluation of minimum inhibitory concentration (MIC) data.

Main Results:

• Unmodified zeolites show limited antibacterial effects.
• Metal-modified zeolites exhibit significantly enhanced antimicrobial activity at lower concentrations.
• Silver-treated zeolite A (ZA) demonstrated the lowest MIC (16 µg/mL) against bacteria.

Conclusions:

• Metal-exchanged zeolites, particularly ZA, are effective long-lasting antimicrobial agents.
• High ion-exchange capacity and controlled metal ion release contribute to sustained action.
• Potential applications in medicine, environment, and industry, especially against resistant bacteria.