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Catalysts 2019, 9(1), 85; https://doi.org/10.3390/catal9010085

Effect of Fe2O3–ZrO2 Catalyst Morphology on Sulfamethazine Degradation in the Fenton-Like Reaction

National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China
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Received: 17 December 2018 / Revised: 28 December 2018 / Accepted: 9 January 2019 / Published: 14 January 2019
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Abstract

Fe2O3–ZrO2 catalysts with different morphologies (nanoplates (HZNPs), nanorods (HZNRs), nanocubes (HZNCs), and nanotubes (HZNTs)) were prepared by a hydrothermal method to investigate the effect of the morphology on the catalytic performance in the Fenton-like reaction for sulfamethazine (SMT) degradation. The Fe2O3–ZrO2 catalysts were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) analysis. The H2O2 adsorption and the Fe2+ density sites on the Fe2O3–ZrO2 catalysts had a close relationship with the morphologies and exhibited an important effect on the ·OH formation in the Fenton-like reaction. Free ·OH radicals were the main oxidative species in the reaction, and the normalized ·OH concentration per surface area of the catalysts was 4.52, 2.24, 2.20, and 0.37 μmol/m2 for HZNPs, HZNRs, HZNCs, and HZNTs, respectively. The Fe2O3–ZrO2 catalysts with different morphologies showed good catalytic performance, and the order of SMT degradation was HZNPs > HZNRs > HZNCs > HZNTs. Total SMT removal was achieved in the Fenton-like reaction over HZNPs at pH 3.0 and 45 °C after 240 min. View Full-Text
Keywords: Fenton-like reaction; hematite; structure-dependent reactivity; ZrO2; sulfamethazine Fenton-like reaction; hematite; structure-dependent reactivity; ZrO2; sulfamethazine
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Gao, P.; Hao, M.; He, Y.; Song, Y.; Yang, S. Effect of Fe2O3–ZrO2 Catalyst Morphology on Sulfamethazine Degradation in the Fenton-Like Reaction. Catalysts 2019, 9, 85.

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