Qiu Xiaoyu, Bouchiat Vincent, Colombet Damien, Ayela Frederic
Laboratoire des Ecoulements Geophysiques et Industriels, Univ. Grenoble Alpes, CNRS 38000 Grenoble France
Institut Néel, CNRS 25 Avenue des Martyrs 38000 Grenoble France
RSC Adv. 2019 Jan 24;9(6):3232-3238. doi: 10.1039/c8ra05976d. eCollection 2019 Jan 22.
Hydrodynamic cavitation 'on a chip' has been used to achieve liquid-phase exfoliation of natural graphite to get graphene. We have taken advantage of the small size of such a 'lab-on-a-chip' (LOC) with low input-power consumption, to produce afterwards few layers of graphene nanosheets in a surfactant suspension. Characterization of the processed material has been performed by TGA analysis, SEM, TEM, AFM and Raman measurements. Observations have demonstrated the presence of monolayers and few layers of graphene with a lateral size around 300 nm, exfoliated from a graphite powder suspension flowing through the microsystem.
“芯片上的”流体动力空化已被用于实现天然石墨的液相剥离以获得石墨烯。我们利用了这种“芯片实验室”（LOC）尺寸小且输入功耗低的特点，随后在表面活性剂悬浮液中制备出了几层石墨烯纳米片。通过热重分析（TGA）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、原子力显微镜（AFM）和拉曼测量对处理后的材料进行了表征。观察结果表明，存在单层和几层横向尺寸约为300 nm的石墨烯，它们是从流经微系统的石墨粉悬浮液中剥离出来的。
