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. 2017 Jan 10;7:39695. doi: 10.1038/srep39695

Figure 5.

Figure 5

Time-dependent UV-vis absorption spectra for the reduction of 4-NP with (a) C-0.02; (b) C-0.1; (c) C-0.5; and (d) the corresponding plots of ln (Ct/C0) versus reaction time.