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Coated Gold Nanoparticles Found to be Speedy Electron Sponges

Gold-coated nanoparticles capture electrons at an unprecedented rate in solution.  Gold nanoparticles demonstrate the potential to quench radiation-induced electrons, indicating potential applications ranging from heterogeneous catalysis to conversion of the radiation into electricity.  Green chemistry methods were used to coat the gold nanoparticles in a chloride compound known as bac-14.  The coat does not stick to the nanoparticle.  Instead it creates a slippery orb around it.  These coated gold nanoparticles can then rapidly loose the coating and collect stray electrons in a solution.  A combination of experimental and theoretical work points to their efficiency.  Calculations noted that coated gold nanoparticles have a high affinity towards electron capture, consistent with experimental findings.  By working towards a complete knowledge of the intricate mechanisms and conditions under which electron capture is most efficient, the full potential of metal nanoparticles such as the coated gold nanoparticles can be realized.

Highlight Date: 
Friday, October 2, 2015
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Ultra-fast Electron Capture by Electrosterically-stabilized Gold Nanoparticles

K. Ghandi, A. D. Findlater, Z. Mahimwalla, C. S. MacNeil, E. Awoonor-Williams, F. Zahariev, and M. S. Gordon
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