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. 2019 Jul 29;9(41):23508–23525. doi: 10.1039/c9ra03962g

Fig. 4. (a) UV-Vis absorption spectra from 200–700 nm. Green line: CEN-ZnO NPs, blue line: cyanobacterial cell extract, red line: zinc acetate. (b) UV-Vis absorption profiles (200–700 nm) of CEN-ZnO NPs synthesized using different concentrations of cell extract, (c) UV-Vis absorption profiles (200–700 nm) of CEN-ZnO NPs synthesized at different selected pH values, (d) powder X-ray diffraction (XRD) pattern of CEN-ZnO NPs.

Fig. 4