Structural characterization of Au nano bipyramids: Reshaping under thermal annealing, the capping agent effect and surface decoration with Pt

Maria Fernanda Torresan, Paula C. Angelomé, Lourdes Bazán-Diaz, J. Jesus Velázquez-Salazar, Rubén Mendoza-Cruz, Rodrigo A. Iglesias, Miguel José-Yacamán

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Anisotropic gold nanoparticles offer potential applications due to their functionalities and shape-dependent properties. Reshaping noble metal nanoparticles is an interesting field with optical, surface-enhanced Raman spectroscopy, catalytic applications and potential application as a photothermic therapy. This work comprises a structural study on gold nano bipyramids (Au NBPs) and nanodumbbells, and the evolution of Au NBPs capped with cetyltrimethylammonium bromide and dodecanethiol through an in situ and ex situ heating process in high vacuum. Also, we study the reshaping of Au NBPs by the addition of Pt to study the surface modification and the strain generated on a single particle by geometric phase analysis.

Original languageEnglish (US)
Article number205701
JournalNanotechnology
Volume30
Issue number20
DOIs
StatePublished - Mar 5 2019
Externally publishedYes

Keywords

  • gold nano bipyramids
  • ligand exchange
  • Pt deposition
  • thermal annealing

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Structural characterization of Au nano bipyramids: Reshaping under thermal annealing, the capping agent effect and surface decoration with Pt'. Together they form a unique fingerprint.

Cite this