Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 9, 2016
Previous Article Next Article

Structural evolution and mechanical behaviour of Pt nanoparticle superlattices at high pressure

Author affiliations

Abstract

High pressure is an effective means for tuning the interparticle distances of nanoparticle (NP) superlattices and thus for modifying their physical properties and functionalities. In this work, we determined the evolution of inter-NP distances of a Pt NP superlattice with increasing pressure using an in situ synchrotron small-angle X-ray scattering (SAXS) technique in a diamond-anvil cell (DAC). Transmission electron microscopy (TEM) was used to characterize the microstructures of pre- and post-compression samples. Our results demonstrate that the evolution of Pt NP assemblies with increasing pressure consists of four stages: (1) ligand elastic response, (2) uniform compression, (3) ligand detachment from NP surfaces, and (4) deviatoric compression of ligands between neighboring NPs. By controlling the magnitudes of applied pressure and deviatoric stress, one can sinter NPs into novel architectures such as nanowires and nanoceramics.

Graphical abstract: Structural evolution and mechanical behaviour of Pt nanoparticle superlattices at high pressure

Back to tab navigation

Supplementary files

Article information


Submitted
24 Nov 2015
Accepted
05 Feb 2016
First published
05 Feb 2016

Nanoscale, 2016,8, 5214-5218
Article type
Paper

Structural evolution and mechanical behaviour of Pt nanoparticle superlattices at high pressure

J. Zhu, Z. Quan, C. Wang, X. Wen, Y. Jiang, J. Fang, Z. Wang, Y. Zhao and H. Xu, Nanoscale, 2016, 8, 5214
DOI: 10.1039/C5NR08291A

Social activity

Search articles by author

Spotlight

Advertisements