High-quality liquid phase-pulsed laser ablation graphene synthesis by flexible graphite exfoliation

M.Jalili¹，H.Ghanbari²，S.Moemen Bellah^1,3，R.Malekfar¹

1. Atomic and Molecular Physics Group, Department of Physics, Faculty of Basic Sciences, Tarbiat Modares University2. School of Metallurgy & Materials Engineering, Iran University of Science and Technology (IUST)3. Department of Process Modeling and Control, Faculty of Engineering, Iran Polymer and Petrochemical, Institute

摘 要：This work reports a one-pot procedure of laser ablation on a graphite target in a liquid medium, based on the variation of different parameters such as target type, laser wavelength, and ablation medium,to obtain high-quality graphene nanosheets. The morphology of derived products was characterized by the field emission scanning electron microscopy（FE-SEM）. Then, the morphology and structure of the optimized sample were characterized by transmission electron microscopy（TEM）, X-ray diffraction（XRD）, ultraviolet-visible-near infrared（UV–vis-NIR） spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy（XPS）. By controlling the laser ablation parameters, we were able to prepare micrometer-sized few-layer graphene nanosheets with mainly less than ten layers. Such synthesized graphene nanosheets were grown at the surface of a flexible graphite target, indicating many potential applications in fundamental research, electrochemical and as hydrophobic surfaces.

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