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Title: Template growth of Au, Ni and Ni–Au nanoclusters on hexagonal boron nitride/Rh(111): a combined STM, TPD and AES study

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.
Authors:
ORCiD logo [1] ;  [1] ;  [1] ;  [1]
  1. Texas A & M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering
Publication Date:
Grant/Contract Number:
SC0001058
Type:
Accepted Manuscript
Journal Name:
RSC Advances
Additional Journal Information:
Journal Volume: 7; Journal Issue: 70; Journal ID: ISSN 2046-2069
Publisher:
Royal Society of Chemistry
Research Org:
Louisiana State Univ., Baton Rouge, LA (United States); Texas A & M Univ., College Station, TX (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
OSTI Identifier:
1425834

Wu, Fanglue, Huang, Dali, Yue, Yuan, and Liu, Li. Template growth of Au, Ni and Ni–Au nanoclusters on hexagonal boron nitride/Rh(111): a combined STM, TPD and AES study. United States: N. p., Web. doi:10.1039/c7ra08880a.
Wu, Fanglue, Huang, Dali, Yue, Yuan, & Liu, Li. Template growth of Au, Ni and Ni–Au nanoclusters on hexagonal boron nitride/Rh(111): a combined STM, TPD and AES study. United States. doi:10.1039/c7ra08880a.
Wu, Fanglue, Huang, Dali, Yue, Yuan, and Liu, Li. 2017. "Template growth of Au, Ni and Ni–Au nanoclusters on hexagonal boron nitride/Rh(111): a combined STM, TPD and AES study". United States. doi:10.1039/c7ra08880a. https://www.osti.gov/servlets/purl/1425834.
@article{osti_1425834,
title = {Template growth of Au, Ni and Ni–Au nanoclusters on hexagonal boron nitride/Rh(111): a combined STM, TPD and AES study},
author = {Wu, Fanglue and Huang, Dali and Yue, Yuan and Liu, Li},
abstractNote = {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.},
doi = {10.1039/c7ra08880a},
journal = {RSC Advances},
number = 70,
volume = 7,
place = {United States},
year = {2017},
month = {9}
}

Works referenced in this record:

Physical and chemical properties of bimetallic surfaces
journal, January 1996