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. 2018 Jan 17;8:939. doi: 10.1038/s41598-018-19277-2

Figure 4.

Figure 4

Effect of (a) pH on adsorption and (b) zeta potential. Adsorption capacity of fluoride (c) and the loss of catechins and caffeine (d) against time over MOF-801 at 298 K from brick tea infusion (Initial fluoride concentration: 8 mg L−1, adsorbent dose: 1.6 g L−1).