|About this Abstract
||MS&T21: Materials Science & Technology
||Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
||Single Acid One-pot Process as an Effective Method for Controlled Generation of Coal-derived Graphene Quantum Dots (GQDs)
||Saurav Kar, Roop Mahajan
|On-Site Speaker (Planned)
In this paper, we present the potential of our in-house developed one-pot process to convert coal to multilayer graphene for generating quantum dots. Coal with its graphene domains and amorphous carbon chunks is a promising source of GQDs, however, the effect of its structure on GQD properties is not fully understood. To this end, GQDs were exfoliated from various grades of coal using our one-pot process and characterized. The effect of acid concentration and temperature on GQD properties were also studied. The results indicate that the GQD size and yield are highly dependent on inherent carbon domain sizes. Temperature and acid concentrations are also effective in modifying GQD size, but with less pronounced effects. The comparatively simpler one-pot process was found to be highly effective in GQD exfoliation. It has also been shown that carbon domain size can be used as a simple and effective determinant of GQD size.