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Growth and properties of chemically modified graphene
Author(s) -
Park Hye Jin,
Skákalová Viera,
Meyer Jannik,
Lee Dong Su,
Iwasaki Takayuki,
Bumby Chris,
Kaiser Ute,
Roth Siegmar
Publication year - 2010
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201000818
Subject(s) - graphene , chemical vapor deposition , materials science , nickel , catalysis , copper , metal , carbon fibers , chemical engineering , nitrogen , ammonia , nanotechnology , chemistry , composite number , composite material , organic chemistry , metallurgy , engineering
Chemically modified graphene was synthesized by chemical vapour deposition (CVD) with ammonia gas introduced during the CVD process. The use of two different metal catalyst films [nickel (Ni) or copper (Cu)] results in distinctly different forms of structural defects in the honeycomb lattice of graphene under identical synthesis conditions. The Ni catalyst film gave rise to numerous “flower‐like” defects, where carbon atoms formed core hexagons surrounded by pentagons alternated with heptagons, whilst graphene grown on a Cu catalyst film contained a much higher concentration of substituted nitrogen atoms. The samples were characterized by a variety of spectroscopic and microscopic methods complemented with electrical transport measurements.