1 / 9

Silver Nano Particles

Silver Nano Particles. Preparation and Bio toxicity. Why Silver?. Silver is known to be bio toxic . Silver ions and neutral atoms disrupts cell membranes and causes cell ruptures

mala
Download Presentation

Silver Nano Particles

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Silver Nano Particles Preparation and Bio toxicity

  2. Why Silver? • Silver is known to be bio toxic. • Silver ions and neutral atoms disrupts cell membranes and causes cell ruptures • Once inside the cell, silver binds to mitochondrial membrane and disrupts energy yielding reaction, i.e. energy (ATP) production in the cell. • Hence, silver ions and neutral atoms can kill bacteria

  3. Practical Application • Food and drink storage in ancient civilization • Surgical instrumentation • Ointments • Wound dressings • Cavity filling (amalgam)

  4. What are nano particle? Why nano? • Atomic silver (uncharged) particles that are less than 100 nm in diameter • Nano particles can disrupt cell membranes more locally, more effective in bio toxicity.

  5. Redox Reaction 2 Ag+ (aq) + 2 e- -----> 2 Ag(s) Citrate ion -----> acetone – 1,3- dicarboxylate + CO2 (g) + 2 e- ______________________________________ + 2 Ag+(aq) + Citrate ion -----> 2 Ag(s) + acetone-1,3-dicarboxylate + CO2

  6. Electron Transfer and Release of CO2

  7. Size Capping by Citrate

  8. Color to look for

  9. Acknowledgement • Drs. Elizabeth Hagar-Barnard and Rashmi Nanjundaswamy for spearheading the project • National Science Foundation for providing the funding • Maria Escudero, Brian Williams, Rodolfo Orellana and Charlene Cuellar for their assistant.

More Related