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Conformal Embedding of Cluster Superlattices with Carbon.
ACS Appl Mater Interfaces 2019; 11(43):40524-40532AA

Abstract

Iridium cluster superlattices on the graphene moiré with Ir(111) are embedded with elemental carbon through vapor-phase deposition. Using scanning tunneling microscopy and spectroscopy, we find that carbon embedding is conformal and does not deteriorate the excellent order of the iridium clusters. The thermal and mechanical stability of the embedded clusters is greatly enhanced. Smoluchowski ripening as well as cluster pick-up by the scanning tunneling microscopy tip are both suppressed. The only cluster decay path left takes place at an elevated temperature of around 1050 K. The cluster material penetrates through the graphene sheet, whereby it becomes bound to the underlying metal. It is argued that conformal carbon embedding is an important step towards the formation of a new type of sintering-resistant cluster lattice material for nanocatalysis and nanomagnetism.

Authors+Show Affiliations

II. Physikalisches Institut , Universität zu Köln , Cologne D-50937 , Germany.II. Physikalisches Institut , Universität zu Köln , Cologne D-50937 , Germany.II. Physikalisches Institut , Universität zu Köln , Cologne D-50937 , Germany.II. Physikalisches Institut , Universität zu Köln , Cologne D-50937 , Germany.II. Physikalisches Institut , Universität zu Köln , Cologne D-50937 , Germany.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31588723

Citation

Will, Moritz, et al. "Conformal Embedding of Cluster Superlattices With Carbon." ACS Applied Materials & Interfaces, vol. 11, no. 43, 2019, pp. 40524-40532.
Will M, Bampoulis P, Hartl T, et al. Conformal Embedding of Cluster Superlattices with Carbon. ACS Appl Mater Interfaces. 2019;11(43):40524-40532.
Will, M., Bampoulis, P., Hartl, T., Valerius, P., & Michely, T. (2019). Conformal Embedding of Cluster Superlattices with Carbon. ACS Applied Materials & Interfaces, 11(43), pp. 40524-40532. doi:10.1021/acsami.9b14616.
Will M, et al. Conformal Embedding of Cluster Superlattices With Carbon. ACS Appl Mater Interfaces. 2019 Oct 30;11(43):40524-40532. PubMed PMID: 31588723.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Conformal Embedding of Cluster Superlattices with Carbon. AU - Will,Moritz, AU - Bampoulis,Pantelis, AU - Hartl,Tobias, AU - Valerius,Philipp, AU - Michely,Thomas, Y1 - 2019/10/21/ PY - 2019/10/8/pubmed PY - 2019/10/8/medline PY - 2019/10/8/entrez KW - Ir(111) KW - carbon embedding KW - catalysis KW - cluster superlattice KW - clusters KW - graphene KW - scanning tunneling microscopy KW - sintering SP - 40524 EP - 40532 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 11 IS - 43 N2 - Iridium cluster superlattices on the graphene moiré with Ir(111) are embedded with elemental carbon through vapor-phase deposition. Using scanning tunneling microscopy and spectroscopy, we find that carbon embedding is conformal and does not deteriorate the excellent order of the iridium clusters. The thermal and mechanical stability of the embedded clusters is greatly enhanced. Smoluchowski ripening as well as cluster pick-up by the scanning tunneling microscopy tip are both suppressed. The only cluster decay path left takes place at an elevated temperature of around 1050 K. The cluster material penetrates through the graphene sheet, whereby it becomes bound to the underlying metal. It is argued that conformal carbon embedding is an important step towards the formation of a new type of sintering-resistant cluster lattice material for nanocatalysis and nanomagnetism. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/31588723/Conformal_Embedding_of_Cluster_Superlattices_with_Carbon L2 - https://dx.doi.org/10.1021/acsami.9b14616 DB - PRIME DP - Unbound Medicine ER -