Lattice Strain Mapping of Platinum Nanoparticles on Carbon and SnO2 Supports.

ABSTRACT: It is extremely important to understand the properties of supported metal nanoparticles at the atomic scale. In particular, visualizing the interaction between nanoparticle and support, as well as the strain distribution within the particle is highly desirable. Lattice strain can affect catalytic activity, and therefore strain engineering via e.g. synthesis of core-shell nanoparticles or compositional segregation has been intensively studied. However, substrate-induced lattice strain has yet to be visualized directly. In this study, platinum nanoparticles decorated on graphitized carbon or tin oxide supports are investigated using spherical aberration-corrected scanning transmission electron microscopy (Cs-corrected STEM) coupled with geometric phase analysis (GPA). Local changes in lattic

SUBMITTER: Daio T 

PROVIDER: S-EPMC4539540 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature