A comprehensive model of carbon nanodots with 0.21 nm lattice fringes patterns

被引：42

作者：

Boukhvalov, Danil W. ^{[1
,2
]}

Osipov, Vladimir Yu. ^{[3
]}

Murzalinov, Danatbek ^{[2
]}

Serikkanov, Abay ^{[2
]}

Bi, Hong ^{[4
]}

机构：

[1] Nanjing Forestry Univ, Inst Mat Phys & Chem, Coll Sci, Nanjing 210037, Peoples R China

[2] Satbayev Univ, Inst Phys & Technol, Alma Ata A25A1G8, Kazakhstan

[3] Ioffe Inst, Polytechnicheskaya 26, St Petersburg 194021, Russia

[4] Anhui Univ, Sch Mat Sci & Engn, Hefei 230601, Peoples R China

来源：

CARBON | 2024年 / 225卷

基金：

中国国家自然科学基金;

关键词：

Transmission electron microscopy; Lattice fringes; Density functional theory; Carbon nanodots; Luminescence; GRAPHENE QUANTUM DOTS; GRAPHITE; ENHANCEMENT; EMISSION;

D O I：

10.1016/j.carbon.2024.119101

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, we design the model for carbon nanodots with 0.21 nm regular lattice fringes patterns in a TEM image observed in multiple experiments. Based on the structural and microscopic data analysis, we proposed a system built from AA-stacked graphene layers with several interlayer covalent C-C bonds and functional groups on the surface. Evaluation of the stability of considered systems upon change in the number of constituting graphene layers, breaking interlayer covalent C-C bonds, formation of vacancies, and changes of functional groups on the surface have been carried out. We also demonstrate the dependence of the bandgap of such carbon nanodots upon the described conditions. The possible assembly mechanism of such a system was also discussed.

引用

页数：8

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