Physical constraints on the redox growth of nanoparticles in solution

Mark T. Spitler

doi:10.1117/12.680893

30 August 2006 Physical constraints on the redox growth of nanoparticles in solution

Mark T. Spitler

Proceedings Volume 6325, Physical Chemistry of Interfaces and Nanomaterials V; 632508 (2006) https://doi.org/10.1117/12.680893
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

At the nanometer scale several physical principles govern the growth of nanoparticles through redox reactions in solution. These include the competition between diffusion and electron transfer for a redox agent at the surface of a very small particle, the dependence of electron transfer kinetics upon the size of the nanoparticle, and a coulomb charging of the nanoparticle which affects the kinetics of the reaction. Using the growth of a metal nanoparticle as an example, mathematical models describing these principles have been formulated, and rates of growth predicted as a function of particle size, electrochemical potential of the redox agent, and the rate constant for electron transfer. The growth rate is seen to be nonlinear with time.

Citation Download Citation

Mark T. Spitler "Physical constraints on the redox growth of nanoparticles in solution", Proc. SPIE 6325, Physical Chemistry of Interfaces and Nanomaterials V, 632508 (30 August 2006); https://doi.org/10.1117/12.680893

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