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- W4320487433 abstract "An original strategy was reported to manipulate ORR selectivity of N-doped hollow mesoporous carbon spheres (N-HMCS) via heteroatom (P and S) doping. Heteroatom doping can not only modulate electronic structure of N-HMCS and proportion/configuration of doped N, but also regulate ORR pathway. Specifically, rich-graphitic N sites and electron-rich C–P bond domains in N,P-HMCS act as electron donors, making *OOH more unstable and easier to desorb into H2O2. This severely distorts the sp2 lattice of graphene, catalyzing a two-electron ORR synergistically. Conversely, a strong interaction between electron-deficient C–S bond domain and *OOH intermediate due to the introduction of highly electronegative S hinders the desorption of *OOH, leading to the breakage of the O–O bond and promoting four-electron ORR along with the rich-pyridinic N receptor site. The reaction activity and kinetics mechanism present a positive correlation with proportion of graphitic N, revealing graphitic N is the primary active site with a much faster electron transfer capacity." @default.
- W4320487433 created "2023-02-14" @default.
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- W4320487433 date "2023-06-01" @default.
- W4320487433 modified "2023-10-18" @default.
- W4320487433 title "Steering the oxygen reduction reaction pathways of N-carbon hollow spheres by heteroatom doping" @default.
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- W4320487433 doi "https://doi.org/10.1016/j.apcatb.2023.122470" @default.
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