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Diffusion of gold nanoparticles in toluene and water as seen by dynamic light scattering

  • Kaikin Wong
  • Changjiu Chen
  • Kong Wei
  • V. A. L. Roy
  • Suresh M. Chathoth
Research Paper

Abstract

Although the range of applications for gold nanoparticles (Au NPs) is growing rapidly, the study of the diffusion in different solvents is rare. This paper describes the translational diffusion coefficient of Au NPs inside toluene and water measured by dynamic light scattering. The size of the nanoparticles is examined by transmission electron microscopy and compared with the hydrodynamic radius. The diffusion of the nanoparticles is measured in different angles and temperatures in the two solvents. It is shown that the diffusion measured in both systems obeys Arrhenius relation with the temperature. Although the viscosity of toluene is higher than that of water, the Au NPs are found to diffuse faster in toluene.

Keywords

Dynamic light scattering Diffusion Solvent Nanoparticles Transport phenomena 

Notes

Acknowledgments

The authors acknowledge the financial support from the startup grant of City University of Hong Kong under projects 7800359 and 9610290.

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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • Kaikin Wong
    • 1
  • Changjiu Chen
    • 1
  • Kong Wei
    • 1
  • V. A. L. Roy
    • 1
  • Suresh M. Chathoth
    • 1
  1. 1.Department of Physics and Materials ScienceCity University of Hong KongHong KongHong Kong SAR

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