Journal
APPLIED PHYSICS EXPRESS
Volume 11, Issue 9, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/APEX.11.095101
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Funding
- JSPS [26105009, 15K17642]
- Nanotechnology Platform Program of the Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- Material Analysis and Structure Analysis Open Unit (MASAOU), Japan
- Grants-in-Aid for Scientific Research [15K17642, 26105009] Funding Source: KAKEN
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Isolated single metal atoms have attracted significant attention as catalytic materials with maximum surface areas as well as high activity and selectivity. However, a dense dispersion of single atoms on supported materials has not been achieved. We applied plasma sputtering in N-2 atmosphere to disperse single Pt atoms on graphene. Scanning transmission electron microscopy observations confirmed the high-density dispersion of single Pt atoms, without widespread sintering into three-dimensional nanoparticles. X-ray photoelectron spectroscopy measurements revealed that pyridinic nitrogen was selectively doped in graphene during the sputtering. Our novel method provides a simple approach to synthesize high-density single Pt atoms on graphene. (c) 2018 The Japan Society of Applied Physics
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