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Degradation of tetracycline by FeNi-LDH/Ti 3 C 2 photo-Fenton system in water: From performance to mechanism.
- Source :
-
Chemosphere [Chemosphere] 2022 May; Vol. 294, pp. 133736. Date of Electronic Publication: 2022 Jan 24. - Publication Year :
- 2022
-
Abstract
- Recently, photo-Fenton technology has been widely used to degrade tetracycline (TC) because of its great efficiency and wide application range. Herein, Fe-Ni layered double hydroxides (FeNi-LDH)/Ti <subscript>3</subscript> C <subscript>2</subscript> photo-Fenton system was constructed in this study. The results showed the introduction of Ti <subscript>3</subscript> C <subscript>2</subscript> solved some problems of FeNi-LDH such as poor conductivity, easy aggregation, and high recombination rate of photoelectron. Benefiting from these advantages, FeNi-LDH/Ti <subscript>3</subscript> C <subscript>2</subscript> exhibited excellent TC removal rate of 94.7% while pure FeNi-LDH was only 54%. Besides, FeNi-LDH/Ti <subscript>3</subscript> C <subscript>2</subscript> possessed strong pH tolerance (2-11) and the removal efficiency was still up to 82% after the four-cycle experiment. Furthermore, the quenching experiments revealed the reaction mechanism, where ∙OH and ·O <subscript>2</subscript> <superscript>-</superscript> were the primary active radicals for degrading TC. Last, the results of the simulated wastewater treatment and the inorganic ion interference tests showed that FeNi-LDH/Ti <subscript>3</subscript> C <subscript>2</subscript> possessed practical application potential. In brief, this study shows that FeNi-LDH/Ti <subscript>3</subscript> C <subscript>2</subscript> can offer a certain theoretical basis for the actual development of hydrotalcite in heterogeneous photo-Fenton systems.<br /> (Copyright © 2022 Elsevier Ltd. All rights reserved.)
- Subjects :
- Catalysis
Hydrogen Peroxide
Hydroxides
Tetracycline
Titanium
Water
Subjects
Details
- Language :
- English
- ISSN :
- 1879-1298
- Volume :
- 294
- Database :
- MEDLINE
- Journal :
- Chemosphere
- Publication Type :
- Academic Journal
- Accession number :
- 35085622
- Full Text :
- https://doi.org/10.1016/j.chemosphere.2022.133736