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...

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Main Authors: Shasha Li, Liming Shao, Hua Zhang, Xuemin Lu, Fan Lü, Pinjing He
Format: Article
Language:English
Published: Springer 2022-07-01
Series:Biochar
Subjects:
Online Access:https://doi.org/10.1007/s42773-022-00165-y
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author Shasha Li
Liming Shao
Hua Zhang
Xuemin Lu
Fan Lü
Pinjing He
author_facet Shasha Li
Liming Shao
Hua Zhang
Xuemin Lu
Fan Lü
Pinjing He
author_sort Shasha Li
collection DOAJ
description 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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spelling doaj.art-82b4a40584f540fe963f1c08418ac6e32022-12-22T00:58:16ZengSpringerBiochar2524-79722524-78672022-07-014111510.1007/s42773-022-00165-yA nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox-active moietiesShasha Li0Liming Shao1Hua Zhang2Xuemin Lu3Fan Lü4Pinjing He5State Key Laboratory of Pollution Control and Resource Reuse, Tongji UniversityInstitute of Waste Treatment and Reclamation, Tongji UniversityState Key Laboratory of Pollution Control and Resource Reuse, Tongji UniversityState Key Laboratory of Pollution Control and Resource Reuse, Tongji UniversityState Key Laboratory of Pollution Control and Resource Reuse, Tongji UniversityInstitute of Waste Treatment and Reclamation, Tongji UniversityHighlights 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.https://doi.org/10.1007/s42773-022-00165-yBiocharPyrogenic charsRedox propertyElectron exchange capacityC-AFM
spellingShingle Shasha Li
Liming Shao
Hua Zhang
Xuemin Lu
Fan Lü
Pinjing He
A nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox-active moieties
Biochar
Biochar
Pyrogenic chars
Redox property
Electron exchange capacity
C-AFM
title A nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox-active moieties
title_full A nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox-active moieties
title_fullStr A nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox-active moieties
title_full_unstemmed A nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox-active moieties
title_short A nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox-active moieties
title_sort nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox active moieties
topic Biochar
Pyrogenic chars
Redox property
Electron exchange capacity
C-AFM
url https://doi.org/10.1007/s42773-022-00165-y
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