Thermal stability of Cu at Ag core-shell nanoparticles

Chi Hang Tsai, Shih Yun Chen, Jenn Ming Song, In Gann Chen, Hsin Yi Lee

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

In this study, the structural evolution and oxidation of Cu at Ag core-shell nanoparticle deposits (with average particle diameter of 25. nm and Ag/Cu atomic ratio of 1/8) upon heating in air were investigated quantitatively via in situ synchrotron radiation X-ray diffraction. With an increasing temperature, the coalescence of Cu cores and ripening of Ag shell occurred simultaneously, resulting in discrete Ag nanonodules and unprotected Cu microparticles. Due to the protection of the thin Ag shell, the formation temperatures of the Cu oxides for Cu at Ag NPs were higher than those for pure Cu nanoparticles with similar size by at least 150. °C.

Original languageEnglish
Pages (from-to)123-129
Number of pages7
JournalCorrosion Science
Volume74
DOIs
Publication statusPublished - 2013 Sep 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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