Table 2 Assignment of FTIR bands for ZnO/GO/CuO nanocomposite.

From: Efficient photocatalytic activity of ZnO/GO/CuO nanocomposite with solar light for reduction of hexavalent chromium

Sample name

No

Wavenumber and assignment

ZnO/GO/CuO

1

3422 (–OH, stretching)

2

1738 (C=O, stretching)

3

1624 (C=C, stretching)

4

1229 (C–O, stretching)

5

1058 (C–O, stretching for epoxy group)

6

810 (Zn–O, stretching)

7

775 (Cu–O, stretching)

8

744 (Cu–O, stretching)

9

482 (Zn–O, stretching)