N, S, P co-doped graphene-like carbon nanosheets developed via in situ engineering strategy of carbon pz-orbitals for highly efficient oxygen redox reaction

Single-Atom Nanozyme Based on Mn-Center with Enhanced Peroxidase-like Activity for Organic Dye Degradation

“…Figure S10 shows the P 2p spectrum of the nanozymes; the P 2p spectrum is located at 132.9 eV, corresponding to 132.7 and 134.2 eV of the P–C peak and P–O peak, respectively. The S 2p spectrum of the nanozymes has three peaks (Figure S11). The peaks at 164.2 and 165.4 eV correspond to 2p 3/2 and 2p 1/2 of thiophene S (−C–S–C−), and the peak at 168.8 eV corresponds to the oxidized S. Comparing the N 1s spectra of Mn-SAzyme and CNPS-nanozyme (Figure S12, Table S1), we can find that in addition to the Mn–N peak, the content of pyridine N and pyrrole N decreased significantly, indicating that the pyrrole N and pyrrole N structures may fix the Mn single-atom. , The content of graphene N is also greatly decreased, which indicated that the increase of POD-like activity of Mn-SAzyme was caused by the doping of Mn.…”

Heteroatom doped M–N–C single-atom catalysts for high-efficiency oxygen reduction reaction: regulation of coordination configurations

“…32,106 In addition, the synergistic effect of N, S, P co-doping can signicantly reduce the charge transfer resistance and enhance the adsorption capacity of the intermediates, thereby enhancing the ORR activity. 107 Yao et al 43 prepared N, S, P co-doped graphene-like carbon nanosheet (NSP/C) bifunctional catalysts for the ORR and OER. The relationship among N, S, and P contents in the catalyst aer pyrolysis can be regulated by the addition amount of P precursor.…”

“…Importantly, doped S atoms can make nearby carbon atoms exhibit a high spin density, thus adjusting the adsorption strength of O 2 intermediates. 43 In the S-doped M–N–C SACs, the introduction of S and N atoms into the sp 2 carbon skeleton will induce asymmetric spin and charge density. 32 Notably, the dissymmetric spin generated by the doped S atom is superior to charge redistribution during the ORR process.…”

Phosphorus-Doped Graphene Electrocatalysts for Oxygen Reduction Reaction

“…The N, P, F-graphene show a 4 e- pathway for ORR. The P, S, N-graphene [ 93 , 94 , 100 , 101 ], P, N, Fe-graphene [ 91 , 98 ], Fe, B, N, S, P-graphene [ 95 ], P, N, B-graphene [ 96 , 97 ], and Ni, N, P-graphene [ 99 ] are developed as well. Significantly, these materials always served as the multifunctional catalyst for ORR, OER, HER, and carbon dioxide reduction reaction (CO 2 RR).…”