Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1016/j.jwpe.2025.107223 |
| Titel (primär) | A novel polydopamine-loaded copper sulfide (CuS@PDA) for activating H2O2 to eliminate tetracycline via 1O2 dominated oxidation pathway |
| Autor | Shi, Z.; He, C.; Huang, H.; Huang, X.; Hu, T.; He, Y.; Yang, D.; Xia, S.; Zhang, H.
; Deng, L. |
| Quelle | Journal of Water Process Engineering |
| Erscheinungsjahr | 2025 |
| Department | TECH |
| Band/Volume | 71 |
| Seite von | art. 107223 |
| Sprache | englisch |
| Topic | T7 Bioeconomy |
| Supplements | https://ars.els-cdn.com/content/image/1-s2.0-S2214714425002958-mmc1.docx |
| Keywords | CuS; Polydopamine; H2O2 activation; Tetracycline degradation; 1O2 dominated |
| Abstract | The frequently detected antibiotics in aquatic environments can induce antibiotic-resistance genes, thereby posing significant risks to both ecosystems and human health. Thus, it is imperative to remove antibiotics from water environments. We constructed a novel polydopamine-loaded copper sulfide (CuS@PDA) through a simple hydrothermal method to activate H2O2 to degrade tetracycline (TC). Compared to CuS/H2O2, the CuS@PDA/H2O2 system not only achieved efficient TC removal with kinetic rate constant of 0.20 min−1, but also showed much lower Cu2+ ions leaching (3.81 mg/L from CuS vs. 0.21 mg/L from CuS@PDA). Besides, CuS@PDA exhibited remarkable recyclability with 93 % removal in the fifth consecutive cycle. Mechanisms analysis revealed that Cu and S contributed to the H2O2 activation and S promoted the conversion of Cu(II) to Cu(I), beneficial for the production of reactive oxygen species. 1O2 was found to play the dominant role in the degradation of TC on the basis of quenching tests and electron paramagnetic resonance (EPR) analysis. PDA in CuS@PDA composites facilitated easier complexation with H2O2 and conferred stronger oxidation capability. Lastly, the TC degradation pathway by CuS@PDA/H2O2 was proposed, and the ecotoxicity of its degradation intermediates was estimated. In conclusion, this work demonstrates that the use of PDA can not only improve the catalytic activity and recyclability of CuS towards H2O2 activation for organic pollutants degradation, but also greatly mitigate copper ions leaching. |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=30589 |
| Shi, Z., He, C., Huang, H., Huang, X., Hu, T., He, Y., Yang, D., Xia, S., Zhang, H., Deng, L. (2025): A novel polydopamine-loaded copper sulfide (CuS@PDA) for activating H2O2 to eliminate tetracycline via 1O2 dominated oxidation pathway J. Water Process Eng. 71 , art. 107223 10.1016/j.jwpe.2025.107223 |
|