Revealing the alloying and dealloying behaviours in AuAg nanorods by thermal stimulus.

ABSTRACT: Binary metallic nanocrystals are attractive as they offer an extra degree of freedom for structure and phase modulation to generate synergistic effects and extraordinary properties. However, whether the binary structures and phases at the nanoscale still follow the rules established on the bulk counterparts remains unclear. In this work, AuAg nanorods were used as a sample to probe into this issue. An in situ heating method by combining aberration-corrected transmission electron microscopes with a chip-based heating holder was employed to perform the heating experiments. It was found that the AuAg nanorods, which initially possessed heterostructures, can be designed and engineered to be gradient phase alloys with thermal pulses over 350 °C. Atomic diffusion inside the rod structures

SUBMITTER: He LB 

PROVIDER: S-EPMC9890656 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature