XPS properties of the Graphene quantum dots

2019-11-21T14:17:24Z (GMT) by Juanjuan Diao Tingting Wang Li Li
The full scan XPS spectrum of the graphene quantum dots (GQDs): present three peaks at 285.09, 531.2 and 1071.17 eV, which correspond to C1s, O1s and Na1s, respectively. The C1s spectrum of GQDs demonstrated oxygen-containing functional group, it shown that citric acid occurred incomplete carbonization and formed a large amount of C=O during pyrolysis.