Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1016/j.apcatb.2026.127238 |
| Titel (primär) | Interconversion of organic carbon transfer and oxidative mineralization in fenton-like system triggered by variable curvature supported atomic cobalt |
| Autor | Zeng, H.; Che, Y.; Wang, T.; Hu, X.; Ma, X.; Deng, L.; Zhou, S.; Zhang, H.
; Deng, J. |
| Quelle | Applied Catalysis B-Environment and Energy |
| Erscheinungsjahr | 2027 |
| Department | TECH |
| Band/Volume | 400 |
| Seite von | art. 127238 |
| Sprache | englisch |
| Topic | T7 Bioeconomy |
| Supplements | Supplement 1 |
| Keywords | Atomic cobalt; Peroxymonosulfate; Electron transfer; Singlet oxygen |
| Abstract | This work demonstrates a convenient strategy for the interconversion of the organic carbon transfer process (OCTP) and oxidative mineralization process (OMP) in atomic cobalt mediated Fenton-like systems via flexible strain engineering. CoN1O2 active sites anchored on carbon nanospheres of varying curvatures were used to activate peroxymonosulfate (PMS) for the differentiated removal of phenol (PhOH). While over 80% of PhOH was removed in all systems, the low curvature catalyst recovered over 90% of PhOH as polymers, whereas the high curvature catalyst achieved efficient mineralization and avoided performance deterioration. Combined characterization and calculations reveal that strain-induced curvature regulates the catalytic mechanism by modulating both the geometric and electronic structures. Geometrically, co‑occupation of PhOH and PMS on the active sites promotes direct two‑electron transfer for OCTP, whereas mutually exclusive occupation generates singlet oxygen via single‑electron transfer for OMP. Electronically, the strong strain reduces the lowest unoccupied molecular orbital energy by weakening the ligand field strength, enhancing electron accessibility and driving the mechanistic transition. This work provides an experimental knob for regulating the carbon cycle in heterogeneous Fenton-like reactions, enabling tunable water purification for diverse application needs. |
| Zeng, H., Che, Y., Wang, T., Hu, X., Ma, X., Deng, L., Zhou, S., Zhang, H., Deng, J. (2027): Interconversion of organic carbon transfer and oxidative mineralization in fenton-like system triggered by variable curvature supported atomic cobalt Appl. Catal. B-Environ. Energy 400 , art. 127238 10.1016/j.apcatb.2026.127238 |
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