Abstract
With the goal to delevop the fabrication of a new type of Pt-nanoparticle carbon-support electrocatalyst, we investigate the carbon embedding of Pt cluster superlattices grown on the moiré of a monolayer of hexagonal boron nitride (h-BN) on Ir(111). Our combined scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS) study establishes conformal C embedding of the Pt clusters on h-BN/Ir(111) without deterioration of superlattice order, preferential and strong binding of the embedding carbon to the Pt clusters, and upon annealing the formation of a homogeneous amorphous carbon (a-C) matrix. There are indications that while the a-C matrix and the Pt clusters bind strongly to each other, upon annealing both weaken their binding to h-BN.
Original language | English |
---|---|
Pages (from-to) | 23435-23444 |
Number of pages | 10 |
Journal | The Journal of physical chemistry C |
Volume | 125 |
Issue number | 42 |
Early online date | 19 Oct 2021 |
DOIs | |
Publication status | Published - 28 Oct 2021 |
Keywords
- 2022 OA procedure