Skip to main content
. 2020 Dec 10;24(1):101920. doi: 10.1016/j.isci.2020.101920

Figure 2.

Figure 2

TEM and SEM images of NDNG

(A–J) TEM (A–E) and SEM (F–J) images of various NDNG prepared by different concentration of Zn(NO3)2 and Phe. (A, F) NDNG-1 (Zn(NO3)2: 200 g/L; Phe: 15 g/L). (B, G) NDNG-2 (Zn(NO3)2: 400 g/L; Phe: 15 g/L). (C, H) NDNG-3 (Zn(NO3)2: 500 g/L; Phe: 15 g/L). (D, I) NDNG-4 (Zn(NO3)2: 500 g/L; Phe: 10 g/L). (E, J) NDNG-5 (Zn(NO3)2: 500 g/L; Phe: 5 g/L).

(K) TEM image of NDNG-3 combined with EDS mapping in the same area and relative intensities of C (red), O (yellow), and N (orange) elements.