Strain-Enhanced Metallic Intermixing in Shape-Controlled Multilayered Core–Shell Nanostructures: Toward Shaped Intermetallics

Benjamin P. Williams, Allison P. Young, Ilektra Andoni, Yong Han, Wei Shang Lo, Matthew Golden, Jane Yang, Lian Ming Lyu, Chun-Hong Kuo, James W. Evans, Wenyu Huang, Chia Kuang Tsung*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Controlling the surface composition of shaped bimetallic nanoparticles could offer precise tunability of geometric and electronic surface structure for new nanocatalysts. To achieve this goal, a platform for studying the intermixing process in a shaped nanoparticle was designed, using multilayered Pd-Ni-Pt core–shell nanocubes as precursors. Under mild conditions, the intermixing between Ni and Pt could be tuned by changing layer thickness and number, triggering intermixing while preserving nanoparticle shape. Intermixing of the two metals is monitored using transmission electron microscopy. The surface structure evolution is characterized using electrochemical methanol oxidation. DFT calculations suggest that the low-temperature mixing is enhanced by shorter diffusion lengths and strain introduced by the layered structure. The platform and insights presented are an advance toward the realization of shape-controlled multimetallic nanoparticles tailored to each potential application.

Original languageEnglish
Pages (from-to)10574-10580
Number of pages7
JournalAngewandte Chemie - International Edition
Issue number26
StatePublished - 22 Jun 2020


  • multilayered core–shell nanostructures
  • shaped intermetallic nanoparticles
  • strain-enhanced metallic intermixing


Dive into the research topics of 'Strain-Enhanced Metallic Intermixing in Shape-Controlled Multilayered Core–Shell Nanostructures: Toward Shaped Intermetallics'. Together they form a unique fingerprint.

Cite this