. 2020 Feb 28;8:123. doi: 10.3389/fchem.2020.00123
Copyright © 2020 Jia, Sun, Zhang, Liu, Cao, Huang, Xing, Zhang, Zhang and Cao.
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Figure 3.
XRD patterns of CQDs-N10-Y, CQDs-N20-G, and CQDs-N30-B.