Single Cr atom catalytic growth of graphene

Funding Agencies|National Natural Science Foundation of China [51672181]; National Science Center [2014/13/D/ST5/02853, 2015/19/B/ST5/03399]; Soochow University
Single atoms are the ultimate minimum size limit for catalysts. Graphene, as an exciting, ultimately thin (one atom thick) material can be imaged in a transmission electron microscope with relatively few imaging artefacts. Here, we directly observe the behavior of single Cr atoms in graphene mono- and di-vacancies and, more importantly, at graphene edges. Similar studies at graphene edges with other elemental atoms, with the exception of Fe, show catalytic etching of graphene. Fe atoms have been shown to both etch and grow graphene. In contrast, Cr atoms are only observed to induce graphene growth. Complementary theoretical calculations illuminate the differences between Fe and Cr, and confirm single Cr atoms as superior catalysts for sp(2) carbon growth.

NATURVETENSKAP Fysik Den kondenserade materiens fysik hsv//swe
NATURAL SCIENCES Physical Sciences Condensed Matter Physics hsv//eng
in situ transmission electron microscope (TEM); electron driven catalysis; Cr; single atom; graphene synthesis

Zhao, LiangSoochow Univ, Peoples R China (författare)
Yin, WanjianSoochow Univ, Peoples R China (författare)
Pohl, DariusIFW Dresden, Germany (författare)
Rellinghaus, BerndIFW Dresden, Germany (författare)
Gemming, ThomasIFW Dresden, Germany (författare)
Trzebicka, BarbaraPolish Acad Sci, Poland (författare)
Palisaitis, JustinasLinköpings universitet,Tunnfilmsfysik,Tekniska fakulteten(Swepub:liu)juspa01 (författare)
Jing, GaoSoochow Univ, Peoples R China (författare)
Persson, Per O ALinköpings universitet,Tunnfilmsfysik,Tekniska fakulteten(Swepub:liu)perpe25 (författare)
Liu, ZhongfanSoochow Univ, Peoples R China; Peking Univ, Peoples R China (författare)
Bachmatiuk, AlicjaSoochow Univ, Peoples R China; Polish Acad Sci, Poland; IFW Dresden, Germany (författare)
Rummeli, Mark H.Soochow Univ, Peoples R China; Polish Acad Sci, Poland; IFW Dresden, Germany (författare)
Soochow Univ, Peoples R China; Polish Acad Sci, PolandSoochow Univ, Peoples R China (creator_code:org_t)

Av författaren/redakt...: Ta, Huy Q.; Zhao, Liang; Yin, Wanjian; Pohl, Darius; Rellinghaus, Ber ...; Gemming, Thomas; visa fler...; Trzebicka, Barba ...; Palisaitis, Just ...; Jing, Gao; Persson, Per O A; Liu, Zhongfan; Bachmatiuk, Alic ...; Rummeli, Mark H.; visa färre...

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