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Figure 4 | Nanoscale Research Letters

Figure 4

From: Significantly enhanced dye removal performance of hollow tin oxide nanoparticles via carbon coating in dark environment and study of its mechanism

Figure 4

UV-vis absorption spectra. RhB (a), MB (b), Rh6G (c), and MO (d) when the hollow SnO2@C nanoparticles were present at different times (the insets are the photos of their dyes before and after being treated with the as-synthesized SnO2@C nanoparticles). The adsorption kinetics and adsorption isotherm with the corresponding dyes (e) and the comparison absorbance (f) for the removal rate of SnO2@C hollow nanoparticles (the concentration of dyes is as follows: RhB 10 mg/L, MB 5 mg/L, Rh6G 5 mg/L, and MO 5 mg/L).

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