Template growth of Au, Ni and Ni–Au nanoclusters on hexagonal boron nitride/Rh(111): a combined STM, TPD and AES study
- Texas A & M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering; None
- Texas A & M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering
In this study, the template growth of Au, Ni, and Ni–Au bimetallic nanoclusters on hexagonal boron nitride/Rh(111), i.e. h-BN/Rh(111), was investigated via scanning tunneling microscopy (STM), temperature programmed-desorption (TPD), and Auger electron spectroscopy (AES). STM study shows that template growth of Au clusters on h-BN/Rh(111) forms mainly well-dispersed monolayer clusters. In contrast, Ni forms large multilayer clusters showing a relatively high diffusivity on h-BN/Rh(111) substrate. Ni–Au bimetallic clusters are effectively formed first by Au deposition followed by Ni deposition, with the Au clusters functioning as nucleation sites for the subsequently deposited Ni. Further structural analysis was carried out via TPD and AES. The resulting TPD and AES data show the surface composition and charge transfer between Au and Ni of the bimetallic clusters. These results suggest that the h-BN/Rh(111) substrate represents a unique candidate for supporting Ni–Au bimetallic clusters in further catalytic reactions.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Center for Atomic-Level Catalyst Design (CALCD); Louisiana State Univ., Baton Rouge, LA (United States); Texas A & M Univ., College Station, TX (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- SC0001058
- OSTI ID:
- 1425834
- Journal Information:
- RSC Advances, Journal Name: RSC Advances Journal Issue: 70 Vol. 7; ISSN 2046-2069; ISSN RSCACL
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
CO Adsorption on Au Nanoparticles Grown on Hexagonal Boron Nitride/Rh(111)
Characterization of Pt-Au and Ni-Au Clusters on TiO2(110)
Characterization of Pt-Au and Ni-Au Clusters on TiO(2)(110)
Journal Article
·
Sun May 01 20:00:00 EDT 2016
· Journal of Physical Chemistry. C
·
OSTI ID:1369695
Characterization of Pt-Au and Ni-Au Clusters on TiO2(110)
Journal Article
·
Fri Dec 30 23:00:00 EST 2011
· Topics in Catalysis
·
OSTI ID:1042150
Characterization of Pt-Au and Ni-Au Clusters on TiO(2)(110)
Journal Article
·
Fri Dec 31 23:00:00 EST 2010
· Topics in Catalysis
·
OSTI ID:1044724