Fig. 3

The UV-vis absorption spectra of CuNPs generated by G9 and S4c strains in cell-free supernatant using LB isolation medium, and the recorded absorbance at λUV max (304 & 308) for the two strains using NR-enhanced medium, respectively
The UV-vis absorption spectra of CuNPs generated by G9 and S4c strains in cell-free supernatant using LB isolation medium, and the recorded absorbance at λUV max (304 & 308) for the two strains using NR-enhanced medium, respectively