Thermophysical study of graphene nanoflakes by differential scanning calorimetry

被引：11
作者：
Arkhipova, Ekaterina A. [1 ]
Strokova, Natalia E. [1 ]
Tambovtseva, Yulia A. [1 ]
Ivanov, Anton S. [1 ]
Chernyak, Sergei A. [1 ]
Maslakov, Konstantin, I [1 ]
Egorova, Tolganay B. [1 ]
Savilov, Serguei, V [1 ,2 ]
Lunin, Valery V. [1 ,2 ]
机构：
[1] Lomonosov Moscow State Univ, Dept Chem, 1-3 Leninskiye Gory, Moscow 119991, Russia
[2] Russian Acad Sci, Dept Phys Chem, Kurnakov Inst Gen & Inorgan Chem, 31 Leninsky Prospect, Moscow 119991, Russia
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2020年 / 140卷 / 06期
基金：
俄罗斯基础研究基金会;
关键词：
Graphene nanoflakes; Calorimetry; DSC; Combustion heat; Carbon nanomaterials; MULTIWALL CARBON NANOTUBES; THERMAL-STABILITY; COMBUSTION; NITROGEN; HEATS; ENTHALPIES; OXIDATION; EVOLUTION; GRAPHITE; DIAMOND;
D O I：
10.1007/s10973-019-09040-8
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Combustion heats of graphene nanoflakes (GNFs) of different thicknesses produced by chemical vapor deposition method were measured for the first time by differential scanning calorimetry (DSC) in the temperature range of 303-1273 K. They were found to be lower than that of graphite and increase nonlinearly from 18.8 +/- 1.1 to 30.5 +/- 1.4 kJ g(-1) with decrease in the specific surface area of GNFs from 1730 to 770 m(2) g(-1). The heat capacity of GNFs was calculated to be higher than that of graphite. The energy diagram for the heat of GNF combustion was proposed based on the literature data and results of DSC, Raman spectroscopy and transmission electron microscopy study. The obtained results expand the scarce thermodynamic data available for graphene-based materials.
引用
收藏
页码：2641 / 2648
页数：8
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