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. 2019 Apr 29;10(21):5576–5581. doi: 10.1039/c9sc01357a

Fig. 2. Nitrous acid breakthrough curves for (a) UiO-66, (b) UiO-66-NH2, and (c) UiO-66-(NH2)1/6; the inset illustrates an expanded view of cycles 2 and 3. The x-axis units are the same for all the plots. Note the difference in x-axis scale between (a), (b), and (c).

Fig. 2