Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/j.cej.2024.156594 |
| Document | author version |
| Title (Primary) | In situ grown single-atom cobalt on carbon nanofibers for efficient adsorptive removal of antibiotics: Performance and mechanisms understanding |
| Author | Xia, S.; Chen, F.; Shi, Z.; Deng, L.; Georgi, A.; Zhang, H.
|
| Source Titel | Chemical Engineering Journal |
| Year | 2024 |
| Department | TECH |
| Volume | 499 |
| Page From | art. 156594 |
| Language | englisch |
| Topic | T7 Bioeconomy |
| Supplements | https://ars.els-cdn.com/content/image/1-s2.0-S1385894724080859-mmc1.docx |
| Keywords | Single-atom cobalt; Carbon nanofibers; Sulfadiazine and roxarsone; Adsorption mechanisms; DFT calculations |
| Abstract | Single-atom cobalt on carbon materials have emerged as a highly promising candidate in catalysis, whereas their contribution to the adsorption of organic pollutants is rarely reported; especially adsorption mechanisms between cobalt and organics remain obscure. In this work, single-atom cobalt incorporated carbon nanofibers (CoSA-CNF) was synthesized via the electrostatic spinning technique. CoSA-CNF showed efficient adsorption for both sulfadiazine (SDZ) and roxarsone (ROX), with qe values of 413.16 and 338.42 mg/g fitted by the Langmuir-Freundlich isotherm at room temperature. Characterizations and density functional theory (DFT) calculations illustrated that CoSA-CNF carrying two configurations (Co-N3 and Co-N4) preferred to adsorb SDZ and ROX at Co-N3 sites with higher adsorption energy. The continuous-flow tests in a filtration cell with a CoSA-CNF membrane showed the membrane exhibited a superior recyclability and robust durability for SDZ and ROX removal during 54 h continuous operation without obvious decline. Moreover, the membrane was able to be rapidly regenerated by peroxymonosulfate (PMS) activation. In all, this study reports single-atom cobalt incorporated CNF as an efficient adsorbent for eliminating organic pollutants with the advantage of rapid regeneration, and demonstrates that the Co-N3 configuration is more favorable to adsorb organics than the Co-N4 configuration. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=29846 |
| Xia, S., Chen, F., Shi, Z., Deng, L., Georgi, A., Zhang, H. (2024): In situ grown single-atom cobalt on carbon nanofibers for efficient adsorptive removal of antibiotics: Performance and mechanisms understanding Chem. Eng. J. 499 , art. 156594 10.1016/j.cej.2024.156594 |
|