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- W4294946116 abstract "Despite many studies on single doping (especially N, S) to improve the catalytic performance of biochar in persulfate-based oxidation process (PS-AOP), the investigations of co-doping with multiple heteroatoms for biochar are relatively few. Herein, choosing shrimp shell biochar (NSC-bio, natural N,S co-doped) as research object with exogenous P/S doping, N,S co-doped and N,S,P co-doped biochars were prepared and applied in PS-AOP, respectively. Exogenous S doping (NSC–S-bio) showed a negative effect with the decreased removal efficiency from 88.7% to 45.7%. Quantitative structure-activity relationships analysis showed that, the decreased kobs (0.0692–0.0171 min−1) of NSC-S-bio was linearly related to the decreased Qe (229.0–158.7 mg/g), where the increased electrostatic repulsion during the key catalytic zone by S doping was the key factor. As for NSC-P-bio, a positive effect could be observed (98.9% removal). The increased kobs (0.0692–0.1299 min−1) showed high linear fitting toward P content and specific surface area (449.4–971.6 m2/g) but low fitting degree toward Qe. Further electrochemical characterization revealed that, the increased surface catalytic sites and enhanced electronic conductivity endowed NSC-P-bio improved catalytic performance, which achieved rapid activation of PDS via non-radical electron transfer path and showed selectively toward substrate with electron-donating groups. This study provides new insight for the construction of efficient co-doped biochar catalysts in PS-AOP." @default.
- W4294946116 created "2022-09-08" @default.
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- W4294946116 date "2022-11-01" @default.
- W4294946116 modified "2023-10-13" @default.
- W4294946116 title "Non-radical oxidation by N,S,P co-doped biochar for persulfate activation: Different roles of exogenous P/S doping, and electron transfer path" @default.
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- W4294946116 doi "https://doi.org/10.1016/j.jclepro.2022.133995" @default.
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