Chemically induced transformation of chemical vapour deposition grown bilayer graphene into fluorinated single-layer diamond.,Nature Nanotechnology

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Chemically induced transformation of chemical vapour deposition grown bilayer graphene into fluorinated single-layer diamond.
Nature Nanotechnology ( IF 38.1 ) Pub Date : 2019-12-09 , DOI: 10.1038/s41565-019-0582-z
Pavel V Bakharev ₁ , Ming Huang _{1,

2} , Manav Saxena _{1,

3} , Suk Woo Lee ₂ , Se Hun Joo ₄ , Sung O Park ₄ , Jichen Dong ₁ , Dulce C Camacho-Mojica ₁ , Sunghwan Jin ₁ , Youngwoo Kwon ₁ , Mandakini Biswal ₁ , Feng Ding _{1,

2} , Sang Kyu Kwak _{1,

4} , Zonghoon Lee _{1,

2} , Rodney S Ruoff _{1,

2,

4,

5}

Affiliation

Notwithstanding the numerous density functional studies on the chemically induced transformation of multilayer graphene into a diamond-like film carried out to date, a comprehensive convincing experimental proof of such a conversion is still lacking. We show that the fluorination of graphene sheets in Bernal (AB)-stacked bilayer graphene grown by chemical vapour deposition on a single-crystal CuNi(111) surface triggers the formation of interlayer carbon-carbon bonds, resulting in a fluorinated diamond monolayer ('F-diamane'). Induced by fluorine chemisorption, the phase transition from (AB)-stacked bilayer graphene to single-layer diamond was studied and verified by X-ray photoelectron, UV photoelectron, Raman, UV-Vis and electron energy loss spectroscopies, transmission electron microscopy and density functional theory calculations.

中文翻译：

化学气相沉积生长的双层石墨烯通过化学诱导转化为氟化单层金刚石。

尽管迄今为止对多层石墨烯向类金刚石薄膜的化学诱导转化进行了大量的密度泛函研究，但仍然缺乏这种转化的全面令人信服的实验证据。我们表明，通过化学气相沉积在单晶 CuNi(111) 表面上生长的 Bernal (AB) 堆叠双层石墨烯中石墨烯片的氟化触发层间碳 - 碳键的形成，导致氟化金刚石单层（' F-金刚石')。在氟化学吸附诱导下，通过 X 射线光电子、紫外光电子、拉曼、紫外可见和电子能量损失光谱、透射电子显微镜和密度研究和验证了从 (AB) 堆叠双层石墨烯到单层金刚石的相变泛函理论计算。

更新日期：2019-12-11

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