Composition dependence on dispersion of Au/Cu bimetallic nanoparticles in nylon 11 thin films |
| |
| Authors: | K Akamatsu T Kawamura S Deki |
| |
| Institution: | (1) Division of Molecular Science, The Graduate School of Science and Technology, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan, JP;(2) Department of Chemical Science and Engineering, Faculty of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan, JP |
| |
| Abstract: | Effect of composition on the dispersion of AuxCu1-x bimetallic nanoparticles into nylon 11 matrix has been investigated. TEM, EDX, and XPS depth profiling were used for characterizing
the changes in the composition of the bimetallic particles and in the depth distribution of the particles in the nylon 11
layer caused by heat treatment in N2 atmosphere. The island-like bimetallic particles were found to be formed on the nylon 11 surface before heat treatment. The
results of XPS depth profiling revealed that, by the heat treatment, the AuxCu1-x bimetallic particles with x? 0.55 were not dispersed into the nylon 11 layer while those with x≥ 0.70 were homogeneously dispersed in the films, indicating the existence of critical composition for penetration of the
bimetallic particles. By comparing the composition and structure of the bimetallic particles, the cause of these finding is
discussed in terms of surface free energy of the particles.
Received 29 November 2000 |
| |
| Keywords: | PACS 61 46 +w Nanoscale materials: clusters nanoparticles nanotubes and nanocrystals – 68 35 Fx Diffusion interface formation |
| 本文献已被 SpringerLink 等数据库收录！ |
|
