Chromium Ion Accumulations from Aqueous Solution by the Eichorinia crassipes Plant and Reusing in the Synthesis of Cr-Doped ZnO Photocatalyst

Figure 1

XRD patterns of (a) ZnO (JCPDS No. 036-1451), ZnO, D1, D2, D4, D6, and D8 samples and (b) from 31-37° range.

(a)

(b)