Catalytic Ozonation of Atrazine Enhanced by Mesoporous CeO2: Morphology, Performance and Intermediates

Zhang, Jianlin; Zhuang, Tao; Liu, Shanjun; Sun, Shan; Wang, Yongxin; Liu, Xinyu; Wang, Jin; Liu, Rutao

doi:10.3390/w14213431

Open AccessArticle

Catalytic Ozonation of Atrazine Enhanced by Mesoporous CeO₂: Morphology, Performance and Intermediates

by

Jianlin Zhang

^1,2

,

Tao Zhuang

²,

Shanjun Liu

²,

Shan Sun

²,

Yongxin Wang

²,

Xinyu Liu

³,

Jin Wang

⁴ and

Rutao Liu

^1,*

¹

School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, Qingdao 266000, China

²

Jinan Environmental Research Academy, Jinan 250000, China

³

Shandong CRRC Huateng Environment Co. Ltd., Jinan 250000, China

⁴

School of Civil Engineering, Beijing Jiaotong University, Beijing 100000, China

^*

Author to whom correspondence should be addressed.

Water 2022, 14(21), 3431; https://doi.org/10.3390/w14213431

Submission received: 29 September 2022 / Revised: 24 October 2022 / Accepted: 25 October 2022 / Published: 28 October 2022

(This article belongs to the Special Issue Advanced Oxidation Processes for Emerging Contaminant Removal)

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Abstract

Heterogeneous catalytic ozonation is an alternative approach for the removal of refractory pollutants from water, and the fabrication of mesoporous materials with high dispersibility would enhance the catalytic efficiency. A mesoporous CeO₂ was prepared by the nanocasting method with SBA-15 as a hard template, and was investigated in the catalytic ozonation of atrazine. The synthetical CeO₂ nanorods have a specific surface area of 95.08 m²/g, a diameter of 10.16 nm, and a spacing of 2.18 nm. The removal rate of atrazine was 85.5%, 64.8%, and 46.4% in the order of catalytic ozonation by synthetical CeO₂ > single ozonation > catalytic ozonation by commercial CeO₂, respectively. The superior activity of the synthetical CeO₂ could be attributed to the well-ordered mesoporous structure, the high surface area, and the redox Ce³⁺/Ce⁴⁺ cycling. Moreover, eight organic intermediates were identified after one minute of catalytic ozonation of atrazine, and the cleavage of the ethylamino group was proposed as the main pathway of atrazine degradation.

Keywords: catalytic ozonation; atrazine; CeO₂; mesoporous

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MDPI and ACS Style

Zhang, J.; Zhuang, T.; Liu, S.; Sun, S.; Wang, Y.; Liu, X.; Wang, J.; Liu, R. Catalytic Ozonation of Atrazine Enhanced by Mesoporous CeO₂: Morphology, Performance and Intermediates. Water 2022, 14, 3431. https://doi.org/10.3390/w14213431

AMA Style

Zhang J, Zhuang T, Liu S, Sun S, Wang Y, Liu X, Wang J, Liu R. Catalytic Ozonation of Atrazine Enhanced by Mesoporous CeO₂: Morphology, Performance and Intermediates. Water. 2022; 14(21):3431. https://doi.org/10.3390/w14213431

Chicago/Turabian Style

Zhang, Jianlin, Tao Zhuang, Shanjun Liu, Shan Sun, Yongxin Wang, Xinyu Liu, Jin Wang, and Rutao Liu. 2022. "Catalytic Ozonation of Atrazine Enhanced by Mesoporous CeO₂: Morphology, Performance and Intermediates" Water 14, no. 21: 3431. https://doi.org/10.3390/w14213431

APA Style

Zhang, J., Zhuang, T., Liu, S., Sun, S., Wang, Y., Liu, X., Wang, J., & Liu, R. (2022). Catalytic Ozonation of Atrazine Enhanced by Mesoporous CeO₂: Morphology, Performance and Intermediates. Water, 14(21), 3431. https://doi.org/10.3390/w14213431

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Catalytic Ozonation of Atrazine Enhanced by Mesoporous CeO₂: Morphology, Performance and Intermediates

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