Silver nanoparticles: green synthesis and their antimicrobial activities
Virender K Sharma1, Ria A Yngard, Yekaterina Lin
1Chemistry Department, Florida Institute of Technology, 150 West University Boulevard, Melbourne, Florida 32901, USA. vsharma@fit.edu
Advances in Colloid and Interface Science
|October 24, 2008
Summary
Green synthesis offers eco-friendly methods for preparing silver nanoparticles (Ag NPs). These Ag NPs exhibit significant antimicrobial activity and potential applications in water purification and medical fields.
Area of Science:
- Nanotechnology
- Green Chemistry
- Materials Science
Background:
- Conventional silver nanoparticle (Ag NP) synthesis often involves toxic chemical agents.
- There is a growing need for environmentally benign synthesis routes for Ag NPs.
Purpose of the Study:
- To review green synthesis approaches for Ag NPs.
- To highlight the advantages of green synthesis over conventional methods.
- To discuss the applications and implications of Ag NPs.
Main Methods:
- Overview of various green synthesis methods including polyoxometallates, polysaccharide, Tollens, irradiation, and biological approaches.
- Synthesis using environmentally friendly solvents like water.
- Utilizing plant extracts and biomolecules as reducing and capping agents.
- Incorporation of Ag NPs with polymers and TiO(2).
Main Results:
- Green synthesis methods produce stable, shape-controlled Ag NPs.
- Synthesized Ag NPs demonstrate high antimicrobial activity against various bacteria.
- Ag NPs show potential for use in medical applications and water/air purification filters.
- Discussion of mechanisms behind Ag NP antibacterial activity.
Conclusions:
- Green synthesis provides a sustainable and effective route for Ag NP production.
- Ag NPs possess significant antimicrobial properties applicable in healthcare and environmental remediation.
- Further investigation into the ecological impact of Ag NPs is warranted.
