Silver NP's

• Silver nanoparticles (SNP's or AgNP's) exhibit antibacterial properties via bacterial inactivation and growth inhibition.¹
• Zeta potential measurements revealed that the NPs were negatively charged; unlike Ag ions.²
• No evidence was found for loss of membrane integrity with an environmentally beneficial bacterium upon treatment with the NPs.²
• Collision between two particles of different sizes; Ag-NPs which are in the nanometer size range and biocolloids (bacteria cells) which are in the micrometer size range.¹
• 
• Examples: Commercial use of Silver NP's
  
  
    Silver Shield Gel      Silver Shield Liquid
• References:
  1. Silver nanoparticle–E. coli colloidal interaction in water and effect on E. coli survival, A. Dror-Ehrea, , , H. Mamaneb, T. Belenkovac, G. Markovichc, A. Adina,
  Journal of Colloid and Interface Science Volume 339, Issue 2, 15 November 2009, Pages 521–526
  
  2. Interaction of silver nanoparticles with an environmentally beneficial bacterium, Pseudomonas chlororaphis, Christian O. Dimkpaa, , , Alyssa Caldera, Priyanka Gajjara, Srinivas Merugub, Wenjie Huangc, David W. Britta, Joan E. McLeand, William P. Johnsonb, Anne J. Andersone,
  Journal of Hazardous Materials, Volume 188, Issues 1–3, 15 April 2011, Pages 428–435

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