Efficient self-photo-degradation of cationic textile dyes involved triethylamine and degradation pathway
| Autor: | Fenghua Xiao, Chu Yilong, Wen-Hua Xu, Qian Wang, Haiying Jiang, Kebin Li, Cheng-Bo Li, Xue-Wang Gao |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis 0208 environmental biotechnology 02 engineering and technology 010501 environmental sciences Photochemistry 01 natural sciences Catalysis chemistry.chemical_compound Tandem Mass Spectrometry Ethylamines Environmental Chemistry Fourier transform infrared spectroscopy Coloring Agents Photodegradation Triethylamine 0105 earth and related environmental sciences Chemistry Textiles Chemical process of decomposition Public Health Environmental and Occupational Health Cationic polymerization General Medicine General Chemistry Pollution Decomposition 020801 environmental engineering Textile Industry Photocatalysis Degradation (geology) Chromatography Liquid |
| Zdroj: | Chemosphere. 266:129209 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/j.chemosphere.2020.129209 |
| Popis: | Cationic textile dyes such as astrazon brilliant red (ABR), are frequently used in the textile industry and contaminait the water ecology. Photodegradation of such dyes in wastewater is considered as a promising method, while the existing approaches are usually involved complicated and costly materials as photocatalysts. Facial, effective and low-cost approaches for their decontamination are needed. What’s more, the detailed decomposition path of ABR is not revealed. The present study shows that ABR could suffer effective self-photo-degradation under triethylamine treatment without a photocatalyst. Almost 100% of the dye degraded within 1 h under visible light irradiation. UV–vis, FTIR and UPLC-MS analysis conformed the degradation of ABR. Factors involved in the degradation system were investigated clearly. What’s more, the accurate and detailed analysis of UV–vis, FTIR and UPLC-MS data combined with computational analysis revealed the decomposition process of ABR. Reactive oxygen species (ROS) was investigated from ROS trapping experiments and EPR measurements, which revealed that O2− was the critical ROS in the degradation process, while 1O2 and OH had slightly influence on the degradation progression. |
| Databáze: | OpenAIRE |
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