在环境条件下老化14个月的氧化石墨烯薄片水悬浮液的形态与化学纯度。一项初步研究。

Morphology and Chemical Purity of Water Suspension of Graphene Oxide FLAKES Aged for 14 Months in Ambient Conditions. A Preliminary Study.

作者信息

Chlanda Adrian, Kowiorski Krystian, Małek Marcin, Kijeńska-Gawrońska Ewa, Bil Monika, Djas Małgorzata, Strachowski Tomasz, Swieszkowski Wojciech, Lipińska Ludwika

机构信息

Research Group of Graphene and Composites, Łukasiewicz Research Network-Institute of Microelectronics and Photonics, Aleja Lotników 32/46, 02-668 Warsaw, Poland.

Research Group of Functional Materials, Łukasiewicz Research Network-Institute of Microelectronics and Photonics, Aleja Lotników 32/46, 02-668 Warsaw, Poland.

出版信息

Materials (Basel). 2021 Jul 23;14(15):4108. doi: 10.3390/ma14154108.

Graphene and its derivatives have attracted scientists' interest due to their exceptional properties, making them alluring candidates for multiple applications. However, still little is known about the properties of as-obtained graphene derivatives during long-term storage. The aim of this study was to check whether or not 14 months of storage time impacts graphene oxide flakes' suspension purity. Complementary micro and nanoscale characterization techniques (SEM, AFM, EDS, FTIR, Raman spectroscopy, and elemental combustion analysis) were implemented for a detailed description of the topography and chemical properties of graphene oxide flakes. The final step was pH evaluation of as-obtained and aged samples. Our findings show that purified flakes sustained their purity over 14 months of storage.

石墨烯及其衍生物因其独特的性质吸引了科学家们的关注，使其成为多种应用的诱人候选材料。然而，对于刚制备的石墨烯衍生物在长期储存过程中的性质仍知之甚少。本研究的目的是检验14个月的储存时间是否会影响氧化石墨烯薄片悬浮液的纯度。采用了互补的微观和纳米级表征技术（扫描电子显微镜、原子力显微镜、能谱分析、傅里叶变换红外光谱、拉曼光谱和元素燃烧分析）来详细描述氧化石墨烯薄片的形貌和化学性质。最后一步是对刚制备的样品和老化样品进行pH值评估。我们的研究结果表明，纯化后的薄片在14个月的储存期内保持了其纯度。