Preparation of graphene by exfoliation of graphite using wet ball milling
Preparation of graphene by exfoliation of graphite using wet ball milling
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DOI：
10.1039/c0jm01354d
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发表时间：
2010-07
影响因子：
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通讯作者：
Weifeng Zhao;Ming Fang;Furong Wu;Hang Wu;Liwei Wang;Guohua Chen
中科院分区：
文献类型：
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作者：
Weifeng Zhao;Ming Fang;Furong Wu;Hang Wu;Liwei Wang;Guohua Chen
采用湿法球磨，在液体介质中将石墨片剥离成石墨烯。将厚度为30~80 nm的多层石墨纳米片分散到N，N-二甲基甲酰胺(DMF)中，并在行星磨机中进行剪切力主导的球磨剥离。经高速离心后，上清液中可见形状不规则的单层和少层石墨烯薄片(≤3层)，厚度约为0.8~1.8 nm。用透射电子显微镜、扫描电子显微镜、电子衍射、原子力显微镜和拉曼光谱对石墨烯进行了鉴定和表征。石墨烯粉末的室温电导率为∼1.2×10 3 S m−1。
Wet ball milling was used to exfoliate graphite platelets into graphenes in a liquid medium. Multi-layered graphite nanosheets with a thickness of 30 to 80 nm were dispersed into N,N-dimethylformamide (DMF) and exfoliated by shear-force-dominated ball milling carried out in a planetary mill. After high-speed centrifugation, irregular shaped single- and few-layer graphene sheets (≤3 layers) having a thickness around 0.8–1.8 nm were found from the supernatant. The graphenes were identified and characterized using transmission and scanning electron microscopy, electron diffraction, atomic force microscopy and Raman spectroscopy. The electrical conductivity of the graphene powder was ∼1.2 × 103 S m−1 at room temperature.