CO-Induced Smoluchowski Ripening of Pt Cluster Arrays on the Graphene/Ir(111) Moire
(2013) In ACS Nano 7(3). p.2020-2031- Abstract
- Regular Pt cluster arrays grown on the moire template formed by graphene on Ir(111) were tested for their stability with respect to CO gas exposure. Cluster stability and adsorption-Induced processes were analyzed as a function of cluster size, with In situ scanning tunneling microscopy and X-ray photoelectron spectroscopy. Small clusters containing fewer than 10 atoms were unstable upon CO adsorption. They sintered through Smoluchowski ripening-cluster diffusion and coalescence rather than the frequently reported Ostwald ripening mediated by metal-adsorbate complexes. Larger dusters remained immobile upon CO adsorption but became more three-dimensional. Careful analysis of the experimental data complemented by ab initio density functional... (More)
- Regular Pt cluster arrays grown on the moire template formed by graphene on Ir(111) were tested for their stability with respect to CO gas exposure. Cluster stability and adsorption-Induced processes were analyzed as a function of cluster size, with In situ scanning tunneling microscopy and X-ray photoelectron spectroscopy. Small clusters containing fewer than 10 atoms were unstable upon CO adsorption. They sintered through Smoluchowski ripening-cluster diffusion and coalescence rather than the frequently reported Ostwald ripening mediated by metal-adsorbate complexes. Larger dusters remained immobile upon CO adsorption but became more three-dimensional. Careful analysis of the experimental data complemented by ab initio density functional theory calculations provides insight Into the origin of the CO-induced Pt cluster ripening and shape transformations. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3749130
- author
- Gerber, Timm ; Knudsen, Jan LU ; Feibelman, Peter J. ; Grånäs, Elin LU ; Stratmann, Patrick ; Schulte, Karina LU ; Andersen, Jesper N LU and Michely, Thomas
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- graphene, cluster, Smoluchowski ripening, sintering, carbon monoxide, diffusion, adsorption
- in
- ACS Nano
- volume
- 7
- issue
- 3
- pages
- 2020 - 2031
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000316846700018
- scopus:84875638999
- pmid:23379255
- ISSN
- 1936-086X
- DOI
- 10.1021/nn400082w
- language
- English
- LU publication?
- yes
- id
- c3c7c375-a7e9-4963-8487-436d8684fe01 (old id 3749130)
- date added to LUP
- 2016-04-01 09:48:13
- date last changed
- 2022-04-11 23:00:30
@article{c3c7c375-a7e9-4963-8487-436d8684fe01, abstract = {{Regular Pt cluster arrays grown on the moire template formed by graphene on Ir(111) were tested for their stability with respect to CO gas exposure. Cluster stability and adsorption-Induced processes were analyzed as a function of cluster size, with In situ scanning tunneling microscopy and X-ray photoelectron spectroscopy. Small clusters containing fewer than 10 atoms were unstable upon CO adsorption. They sintered through Smoluchowski ripening-cluster diffusion and coalescence rather than the frequently reported Ostwald ripening mediated by metal-adsorbate complexes. Larger dusters remained immobile upon CO adsorption but became more three-dimensional. Careful analysis of the experimental data complemented by ab initio density functional theory calculations provides insight Into the origin of the CO-induced Pt cluster ripening and shape transformations.}}, author = {{Gerber, Timm and Knudsen, Jan and Feibelman, Peter J. and Grånäs, Elin and Stratmann, Patrick and Schulte, Karina and Andersen, Jesper N and Michely, Thomas}}, issn = {{1936-086X}}, keywords = {{graphene; cluster; Smoluchowski ripening; sintering; carbon monoxide; diffusion; adsorption}}, language = {{eng}}, number = {{3}}, pages = {{2020--2031}}, publisher = {{The American Chemical Society (ACS)}}, series = {{ACS Nano}}, title = {{CO-Induced Smoluchowski Ripening of Pt Cluster Arrays on the Graphene/Ir(111) Moire}}, url = {{http://dx.doi.org/10.1021/nn400082w}}, doi = {{10.1021/nn400082w}}, volume = {{7}}, year = {{2013}}, }