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Article

Enhanced Ozone Oxidation by a Novel Fe/[email protected]γ−Al2O3 Nanocatalyst: The Role of Hydroxyl Radical and Singlet Oxygen

by 1,2, 1,2 and 1,2,*
1
Guangzhou Higher Education Mega Centre, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
2
Guangzhou Higher Education Mega Centre, The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, China
*
Author to whom correspondence should be addressed.
Academic Editor: José Alberto Herrera-Melián
Water 2022, 14(1), 19; https://doi.org/10.3390/w14010019
Received: 12 November 2021 / Revised: 15 December 2021 / Accepted: 20 December 2021 / Published: 22 December 2021
(This article belongs to the Special Issue Advanced Technologies and Materials for Polluted Water Remediation)
Catalytic ozonation is a potential alternative to address the dye wastewater effluent, and developing an effective catalyst for catalyzing ozone is desired. In this study, a novel Fe/[email protected]γ−Al2O3 nanomaterial was prepared and successfully utilized for catalytic ozonation toward dye wastewater effluent components (dimethyl phthalate and 1−naphthol). The synthesized Fe/[email protected]γ−Al2O3 exhibited superior activity in catalytic ozonation of dimethyl phthalate and 1−naphthol in contrast to [email protected]γ−Al2O3 and [email protected]γ−Al2O3. Quench and probe tests indicated that HO° contributed to almost all removal of dimethyl phthalate, whereas O3, HO°, and singlet oxygen participated in the degradation of 1−naphthol in the Fe/[email protected]γ−Al2O3/O3 system. The results of XPS, FT−IR, and EPR suggested that HO° and singlet oxygen were generated from the valence variations of Fe(II/III)and Mn(III/IV). Moreover, the Fe/[email protected]γ−Al2O3/O3 system could also have excellent efficacy in actual water samples, including dye wastewater effluent. This study presents an efficient ozone catalyst to purify dye wastewater effluent and deepens the comprehension of the role and formation of reactive species involved in the catalytic ozonation system. View Full-Text
Keywords: catalytic ozonation; reactive species; singlet oxygen; dye wastewater catalytic ozonation; reactive species; singlet oxygen; dye wastewater
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MDPI and ACS Style

Liang, C.; Luo, X.; Hu, Y. Enhanced Ozone Oxidation by a Novel Fe/[email protected]γ−Al2O3 Nanocatalyst: The Role of Hydroxyl Radical and Singlet Oxygen. Water 2022, 14, 19. https://doi.org/10.3390/w14010019

AMA Style

Liang C, Luo X, Hu Y. Enhanced Ozone Oxidation by a Novel Fe/[email protected]γ−Al2O3 Nanocatalyst: The Role of Hydroxyl Radical and Singlet Oxygen. Water. 2022; 14(1):19. https://doi.org/10.3390/w14010019

Chicago/Turabian Style

Liang, Chen, Xinhao Luo, and Yongyou Hu. 2022. "Enhanced Ozone Oxidation by a Novel Fe/[email protected]γ−Al2O3 Nanocatalyst: The Role of Hydroxyl Radical and Singlet Oxygen" Water 14, no. 1: 19. https://doi.org/10.3390/w14010019

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