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Study on the behavior and mechanism of NiFe-LDHs used for the degradation of tetracycline in the photo-Fenton process
An environment-friendly 3D NiFe-LDHs photocatalyst was fabricated via a simple hydrothermal method and characterized by means of SEM, XRD, BET, XPS and FT-IR. It is a highly efficient heterogeneous photo-Fenton catalyst for the degradation of TC-HCl under visible light irradiation. After exploring t...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10614753/ https://www.ncbi.nlm.nih.gov/pubmed/37908668 http://dx.doi.org/10.1039/d3ra05475f |
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author | Liu, Xia Zhou, Yuting Sun, Shuanghui Bao, Siqi |
author_facet | Liu, Xia Zhou, Yuting Sun, Shuanghui Bao, Siqi |
author_sort | Liu, Xia |
collection | PubMed |
description | An environment-friendly 3D NiFe-LDHs photocatalyst was fabricated via a simple hydrothermal method and characterized by means of SEM, XRD, BET, XPS and FT-IR. It is a highly efficient heterogeneous photo-Fenton catalyst for the degradation of TC-HCl under visible light irradiation. After exploring the effects of catalyst dosage, initial concentration of TC-HCl, solution pH and H(2)O(2) concentrations, the optimal reaction conditions were determined. The experiment results showed that the degradation efficiency can reach 99.11% through adding H(2)O(2) to constitute a photo-Fenton system after adsorption for 30 min and visible light for 60 min. After four cycles, the degradation rate decay is controlled within 21.2%, indicating that NiFe-LDHs have excellent reusable performance. The experimental results of environmental factors indicate that Fe(2+) and Ca(2+) promoted the degradation of TC-HCl, both Cl(−) and CO(3)(2−) inhibited the degradation of TC-HCl. Two other antibiotics (OTC and FT) were selected for research and found to be effectively removed in this system, achieving effective degradation of a variety of typical new pollutants. The radical trapping tests and ESR detection showed that ·OH and ·O(2)(−) were the main active substances for TC degradation in the photo-Fenton system. By further measuring the intermediate products of photodegradation, the degradation pathway of TC-HCl was inferred. The toxicity analysis demonstrated that the overall toxicity of the identified intermediates was reduced in this system. This study provides a theoretical and practical basis for the removal of TC in aquatic environments. |
format | Online Article Text |
id | pubmed-10614753 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-106147532023-10-31 Study on the behavior and mechanism of NiFe-LDHs used for the degradation of tetracycline in the photo-Fenton process Liu, Xia Zhou, Yuting Sun, Shuanghui Bao, Siqi RSC Adv Chemistry An environment-friendly 3D NiFe-LDHs photocatalyst was fabricated via a simple hydrothermal method and characterized by means of SEM, XRD, BET, XPS and FT-IR. It is a highly efficient heterogeneous photo-Fenton catalyst for the degradation of TC-HCl under visible light irradiation. After exploring the effects of catalyst dosage, initial concentration of TC-HCl, solution pH and H(2)O(2) concentrations, the optimal reaction conditions were determined. The experiment results showed that the degradation efficiency can reach 99.11% through adding H(2)O(2) to constitute a photo-Fenton system after adsorption for 30 min and visible light for 60 min. After four cycles, the degradation rate decay is controlled within 21.2%, indicating that NiFe-LDHs have excellent reusable performance. The experimental results of environmental factors indicate that Fe(2+) and Ca(2+) promoted the degradation of TC-HCl, both Cl(−) and CO(3)(2−) inhibited the degradation of TC-HCl. Two other antibiotics (OTC and FT) were selected for research and found to be effectively removed in this system, achieving effective degradation of a variety of typical new pollutants. The radical trapping tests and ESR detection showed that ·OH and ·O(2)(−) were the main active substances for TC degradation in the photo-Fenton system. By further measuring the intermediate products of photodegradation, the degradation pathway of TC-HCl was inferred. The toxicity analysis demonstrated that the overall toxicity of the identified intermediates was reduced in this system. This study provides a theoretical and practical basis for the removal of TC in aquatic environments. The Royal Society of Chemistry 2023-10-30 /pmc/articles/PMC10614753/ /pubmed/37908668 http://dx.doi.org/10.1039/d3ra05475f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Liu, Xia Zhou, Yuting Sun, Shuanghui Bao, Siqi Study on the behavior and mechanism of NiFe-LDHs used for the degradation of tetracycline in the photo-Fenton process |
title | Study on the behavior and mechanism of NiFe-LDHs used for the degradation of tetracycline in the photo-Fenton process |
title_full | Study on the behavior and mechanism of NiFe-LDHs used for the degradation of tetracycline in the photo-Fenton process |
title_fullStr | Study on the behavior and mechanism of NiFe-LDHs used for the degradation of tetracycline in the photo-Fenton process |
title_full_unstemmed | Study on the behavior and mechanism of NiFe-LDHs used for the degradation of tetracycline in the photo-Fenton process |
title_short | Study on the behavior and mechanism of NiFe-LDHs used for the degradation of tetracycline in the photo-Fenton process |
title_sort | study on the behavior and mechanism of nife-ldhs used for the degradation of tetracycline in the photo-fenton process |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10614753/ https://www.ncbi.nlm.nih.gov/pubmed/37908668 http://dx.doi.org/10.1039/d3ra05475f |
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