Facile and novel method for graphite exfoliation and preparation of high-temperature stabilized product

Exfoliation, i.e. individual separation of carbon sheets, is of great interest to produce single-layered graphene nanosheets. Chemical or thermal treatments are popular approaches to exfoliate graphite chunks. In general, these conventional methods are assisted with intercalation via covalent or non-covalent functionalization, expansion, and swelling, adsorption of organic molecules in gas phase, solid nanoparticle insertion or direct molecular exfoliation1.2. Exfoliation from bulk, stacked graphite is the most economical way to achieve large quantities of single layer graphene3. Development of a method for producing high-quality graphene in large quantities is essential for further investigation of its properties and applications4. Thermal exfoliation of graphite is considered as a promising strategy though it normally requires a high exfoliation temperature together with a fast heating rate. In this work, graphite was exfoliated through a thermal method in a way that graphite was dispersed in water and then bis-tetrazole was added and sonicated. Then intercalated graphite was heated on an electrical hotplate and exfoliated graphite obtained

کلیدواژه ها:

Graphite ، Graphene ، Exfoliation ، Bis-Tetrazole ، Thermal treatment