Fig. 5: Determination of Cr(VI) removal efficiency using C/Co (ppm) vs. time (min) plots. | npj Clean Water

Fig. 5: Determination of Cr(VI) removal efficiency using C/Co (ppm) vs. time (min) plots.

From: Biomass-derived multiatom-doped carbon dots for the photocatalytic reduction of Cr(VI) and precipitation of Cr(III)

Fig. 5

a Photocatalytic reduction of Cr(VI) solutions with initial concentrations of 20–1000 ppm for 420 min. b Ratio of removed and remaining Cr(VI) concentrations after reduction. c Pseudo-first-order linear-fitted plots of Cr(VI) solutions of various concentrations. d Rate constants and half-life of the reaction. The error bars represent the SD (n = 3).

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