Kinetically Controlled Growth and Shape Formation Mechanism of Platinum Nanoparticles

  • Petroski J
  • Wang Z
  • Travis C. Green A
 et al. 
  • 1


    Mendeley users who have this article in their library.
  • N/A


    Citations of this article.


Recently, we have been able to synthesize platinum colloidal nanoparticles of different shapes (Science, 1996, 272, 1924). In this report, we present transmission electron microscopic (TEM) results on the time-dependent shape distribution of platinum nanoparticles during the growth period and its dependence on the concentration of the capping polymer as well as the pH of the solution. The results suggest a shape-controlled growth mechanism in which the difference between the rate of the catalytic reduction process of Pt2+ on the {111} and {100} faces, the competition between the Pt2+ reduction and the capping process on the different nanoparticle surfaces, and the concentration-dependent buffer action of the polymer itself all control the final distribution of the different shapes observed.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • Janet M. Petroski

  • Zhong L. Wang

  • And Travis C. Green

  • Mostafa A. El-Sayed

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free