Facile one-step hydrothermal synthesis of monolayer and turbostratic bilayer n-doped graphene quantum dots using sucrose as a carbon source

Abstract

In this study, the thickness distribution and interlayer spacing of n-doped graphene quantum dots are revealed by X-ray diffraction curve fitting, which is calculated using a simple and accurate equation.

Engineering functionalization and properties of graphene quantum dots (GQDs) with controllable synthesis for energy and display applications

“…249 Furthermore, the number of layers in GQDs can be confirmed through atomic force microscopy (AFM) and X-ray diffraction (XRD) analysis. 247,250 Recently, Ruammaitree et al conducted the bottom-up hydrosolvothermal synthesis using sucrose and ethylenediamine as precursors, followed by purifi-cation using a MW500 dialysis bag to obtain N-doped GQDs. 250 The size distribution of the obtained GQDs ranged from 3 to 20 nm (with an average size of 16.7 nm) and these GQDs exhibited relatively larger sizes compared with other reports that utilized MW500 dialysis bags.…”

A review on synthesis, properties, and biomedical applications of graphene quantum dots (GQDs)

“…Secondly, doping creates electron trap centers, boosting PL intensity and QY. Moreover, altering electron structures can enhance QY in specific wavelength ranges [158,163,164]. For instance, recent studies by Hung et al reported a 12.5% QY enhancement through sulfur (S) doping in pristine GQDs [158].…”