石墨烯
材料科学
图层(电子)
基质(水族馆)
碳纤维
沉积(地质)
化学工程
电子束诱导沉积
纳米技术
阴极射线
化学气相沉积
电子束物理气相沉积
扫描电子显微镜
电子
复合材料
扫描透射电子显微镜
复合数
海洋学
物理
地质学
工程类
古生物学
生物
量子力学
沉积物
作者
Panpan Feng,Dan Zhang,Guoxu Zhang,Chenwei Li,You Wang,Guanying Chen,Yang Gan
出处
期刊:Small
[Wiley]
日期:2024-02-25
标识
DOI:10.1002/smll.202309285
摘要
An amorphous carbon deposition layer (CDL) with nanoscale thickness induced by scanning electron microscope (SEM) electron beam is studied as a carbon-based protective layer on copper (Cu). CDL is prepared by inducing the deposition of pollutants or hydrocarbons in the cavity of SEM through electron beam irradiation (EBI). Wrinkles and cracks will not form and the interfacial spacing of CDL/Cu is smaller than Graphene/Cu (Gr/Cu). The thickness and coverage of the interfacial oxide layer of CDL/Cu are all smaller than that of the Gr/Cu after the same oxidation conditions. Characterization of Raman mapping also demonstrates that CDL shows better oxidation inhibition effects than graphene. The structure of CDL is determined to be C = C and C = O, CH3 - and C-O can be loaded vertically on CDL. Density functional theory (DFT) is employed for demonstrating the smaller interfacial gap of CDL/Cu, less wrinkles and cracks and larger adsorbing energy of water/oxygen compared with Gr/Cu. Molecular dynamic (MD) simulation also indicates that the diffusion of water or oxygen into CDL/Cu is more difficult and the oxidation of Cu covered by CDL is well suppressed. This work provides a new approach for the study of carbon-based antioxidant materials on Cu.
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