Fig. 3: Catalytic ozonation performance and stability. | Nature Communications

Fig. 3: Catalytic ozonation performance and stability.

From: Tailoring bidirectional electronic transfer interaction tunnels triggers sustainable and high activity of ozone catalysis for water purification

Fig. 3

Performance evaluation of the prepared catalysts on oxalic acid (OA) degradation (A). Error bars represent the standard deviation, obtained by repeating the experiment twice. Conditions: [OA] = 100 mg·L−1, [O3]gas = 1.0 wt%, [catalyst] = 0.25 g·L−1, pH = 2.7. Comparison of mass activity for catalytic ozonation in terms of OA degradation (B)11,27,28,29,30,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69. Kinetics of benzotriazole (BTA), nitrobenzene (NB), 4-hydroxybenzoic acid (PHBA), 4-nitrophenol (4-NP), and phenol (PhOH) degradation in Mn–Fe–NC/O3 (C). Error bars represent the standard deviation, obtained by repeating the experiment twice. Conditions: [pollutants] = 69.4 μM·L−1, [O3]gas = 1.0 wt%, [catalyst] = 0.05 g·L−1, pHBTA = 4.70, pHNB = 5.00, pHPhOH = 5.75, pH4-NP = 4.00, pHPHBA = 4.60. Stability evaluation of Mn–NC/O3 and Mn–Fe–NC/O3 (D). Conditions: [pollutants] = 5.0 mgC·L−1, [O3]gas = 1.0 wt%, [catalyst] = 0.05 g·L−1.

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