石墨烯
材料科学
氧化物
退火(玻璃)
氧化石墨烯纸
纳米技术
热的
热处理
化学工程
复合材料
冶金
物理
工程类
气象学
作者
M. Mar Bernal,Mauro Tortello,Samuele Colonna,Guido Saracco,Alberto Fina
出处
期刊:Nanomaterials
[MDPI AG]
日期:2017-12-05
卷期号:7 (12): 428-428
被引量:24
摘要
In this study, we report a novel strategy to prepare graphene nanopapers from direct vacuum filtration. Instead of the conventional method, i.e., thermal annealing nanopapers at extremely high temperatures prepared from graphene oxide (GO) or partially reduced GO, we fabricate our graphene nanopapers directly from suspensions of fully reduced graphene oxide (RGO), obtained after RGO and thermal annealing at 1700 °C in vacuum. By using this approach, we studied the effect of thermal annealing on the physical properties of the macroscopic graphene-based papers. Indeed, we demonstrated that the enhancement of the thermal and electrical properties of graphene nanopapers prepared from annealed RGO is strongly influenced by the absence of oxygen functionalities and the morphology of the nanoflakes. Hence, our methodology can be considered as a valid alternative to the classical approach.
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