A nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox-active moieties
Highlights The microscopic distribution of RAMs on biochar was achieved by combining C-AFM and a mediated electrochemical method. The uneven distribution of RAMs enabled biochar to possess outstanding EEC by enhancing accessibility. The removal of submicron particles that only occupied 1-4‰wt reduce...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Springer
2022-07-01
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| Series: | Biochar |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s42773-022-00165-y |
| Summary: | Highlights The microscopic distribution of RAMs on biochar was achieved by combining C-AFM and a mediated electrochemical method. The uneven distribution of RAMs enabled biochar to possess outstanding EEC by enhancing accessibility. The removal of submicron particles that only occupied 1-4‰wt reduced EDC to 72% for st700 and 53% for ind400. The removal of submicron particles changed the EAC of st700 to 87% and ind400 to 1.40 times as raw chars. Condensed aromatic structures were indispensable to EAC, while both heteroatoms and amorphous aromatics contributed to EDC. |
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| ISSN: | 2524-7972 2524-7867 |