TY - JOUR
T1 - Growth, stability, and electronic decoupling of Pt clusters on h-BN/Ir(111)
AU - Will, Moritz
AU - Hartl, Tobias
AU - Boix de la Cruz, Virginia
AU - Lacovig, Paolo
AU - Lizzit, Silvano
AU - Knudsen, Jan
AU - Michely, Thomas
AU - Bampoulis, Pantelis
N1 - Funding Information:
This work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) within the project “Cluster Superlattice Membranes” (project no 452340798). P.B. gratefully acknowledges the financial support from the Alexander von Humboldt foundation. V.B. and J.K. are grateful for the financial support from the Swedish Research Council grant number 2017-04840 and from the Crafoord foundation.
Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/2/25
Y1 - 2021/2/25
N2 - Motivated by the relevance of Pt clusters in heterogeneous catalysis, ordered Pt cluster superlattices are templated by the moiré of monolayer hexagonal boron nitride (h-BN) with Ir(111). Using X-ray photoelectron spectroscopy, scanning tunneling microscopy, and scanning tunneling spectroscopy, we provide a comprehensive picture for the mechanism of cluster binding, the thermal stability of clusters, cluster superlattice decay, the morphological evolution of cluster shape with size, and finally Pt cluster decoupling and internal electronic structure. The key findings are that the Pt cluster superlattices on h-BN on Ir(111) are thermally more stable than any other Pt cluster superlattice, are well decoupled from their substrate, and display a discrete cluster height-dependent electronic structure.
AB - Motivated by the relevance of Pt clusters in heterogeneous catalysis, ordered Pt cluster superlattices are templated by the moiré of monolayer hexagonal boron nitride (h-BN) with Ir(111). Using X-ray photoelectron spectroscopy, scanning tunneling microscopy, and scanning tunneling spectroscopy, we provide a comprehensive picture for the mechanism of cluster binding, the thermal stability of clusters, cluster superlattice decay, the morphological evolution of cluster shape with size, and finally Pt cluster decoupling and internal electronic structure. The key findings are that the Pt cluster superlattices on h-BN on Ir(111) are thermally more stable than any other Pt cluster superlattice, are well decoupled from their substrate, and display a discrete cluster height-dependent electronic structure.
UR - http://www.scopus.com/inward/record.url?scp=85101548205&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.0c10136
DO - 10.1021/acs.jpcc.0c10136
M3 - Article
AN - SCOPUS:85101548205
SN - 1932-7447
VL - 125
SP - 3880
EP - 3889
JO - The Journal of physical chemistry C
JF - The Journal of physical chemistry C
IS - 7
ER -