Fig. 1. TEM micrographs, top view AFM images (insets), Gaussian fit of particle size and height distributions of the: (a and b) GO; (c and d) GQDs; (e and f) CQDCA and (g and h) CQDNH samples. The particle size and height of all dots were calculated for set of 100 dots whereas for the GO sample set had 50 GO sheets.