Hydrogen-induced structural transformation of AuCu nanoalloys probed by synchrotron X-ray diffraction techniques

Nanoscale. 2014 Apr 21;6(8):4067-71. doi: 10.1039/c3nr06327e. Epub 2014 Mar 10.

Abstract

In situ X-ray diffraction measurements reveal that the transformation of a AuCu nanoalloy from a face-centered-cubic to an L10 structure is accelerated under a hydrogen atmosphere. The structural transformation rate for the AuCu nanoalloy under hydrogen above 433 K was found to be 100 times faster than that in a vacuum, which is the first quantitative observation of hydrogen-induced ordering of nanoalloys.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Copper / chemistry*
  • Gold Alloys / chemistry*
  • Hot Temperature
  • Hydrogen / chemistry*
  • Metal Nanoparticles / chemistry*
  • Synchrotrons
  • X-Ray Diffraction

Substances

  • Gold Alloys
  • Copper
  • Hydrogen