Engineering dual metal single-atom sites with the nitrogen-coordinated nonprecious catalyst for oxygen reduction reaction (ORR) in acidic electrolyte

Gharibi, Hussein; Dalir, Nima; Jafari, Maryam; Parnian, Mohammad Javad; Zhiani, Mohammad

doi:10.1016/j.apsusc.2021.151367

Cited by 38 publications

(14 citation statements)

References 66 publications

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“…Raman spectroscopy can effectively characterize the disorderly and orderly crystal structures of carbon materials. It can be seen from the Figure 2D that there are two bands at 1350 and 1590 cm −1 , which matched with disordered carbon (D band) and graphitic carbon (G band), respectively ( He et al, 2020 ; Gharibi et al, 2022 ; Zhang et al, 2022 ). It can be concluded that the relative intensity ratios of the D and G band ( I D / I G ) of NC and Mn-N x /NC are 1.015 and 1.026, respectively, suggesting the formation of more defects in N-doped carbon after introduction of Mn, which helps enhance the electrocatalytic activity ( Rao et al, 2022d ; Zou et al, 2022 ).…”

Section: Resultsmentioning

confidence: 91%

Constructing atomically-dispersed Mn on ZIF-derived nitrogen-doped carbon for boosting oxygen reduction

Deng

Pang

et al. 2022

Front. Chem.

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Exploring durable and highly-active non-noble-metal nanomaterials to supersede Pt-based nanomaterials is an effective way, which can reduce the cost and boost the catalytic efficiency of oxygen reduction reaction (ORR). Herein, we constructed atomically-dispersed Mn atoms on the ZIF-derived nitrogen-doped carbon frameworks (Mn-Nx/NC) by stepwise pyrolysis. The Mn-Nx/NC relative to pure nitrogen-doped carbon (NC) exhibited superior electrocatalytic activity with a higher half-wave potential (E1/2 = 0.88 V) and a modest Tafel slope (90 mV dec−1) toward ORR. The enhanced ORR performance of Mn-Nx/NC may be attributed to the existence of Mn-Nx active sites, which can more easily adsorb intermediates, promoting the efficiency of ORR. This work provides a facile route to synthesize single-atom catalysts for ORR.

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Section: Resultsmentioning

confidence: 91%

Constructing atomically-dispersed Mn on ZIF-derived nitrogen-doped carbon for boosting oxygen reduction

Deng

Pang

et al. 2022

Front. Chem.

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“…The steady-state linear sweep voltammetry (LSV) is utilized to evaluate the ORR activities of asobtained PCCNS catalysts (Figure 5a), the onset potential (E 0 ), and half-wave potential (E 1/2 ) of PCCNS and Pt/C catalysts are shown in Figure S9 (Supporting Information). The PCCNS-20 present relatively higher E 0 (0.87 V vs RHE) and E 1/2 (0.77 V vs RHE) than others, with a marginal lower than commercial Pt/C, comparable to the decent Fe-N-C reports [23,[34][35][36][37] (Table 2).…”

Section: Resultsmentioning

confidence: 96%

“…The underlying mechanism can be summarized with the following points: (1) Fe and Zn atoms can be easily embedded into PPy@GO matrix to construct Fe-ZIF8@PPy@GO precursor. The Fe atoms can enhance the Fe-N x active center by either substituting the Zn atoms in ZIF-8 or inserting into PPy to cooperate with nitrogen Tafel slop [mV dec -1 ] Fe-N-C (S) catalyst [22] 0.83 0.71 -Co, Fe SAs/NC [33] 0.86 0.75 86 Fe-N-C/N-OMC [34] 0…”

Section: Resultsmentioning

confidence: 99%

Polyhedral Carbon Anchored on Carbon Nanosheet with Abundant Atomic Fe‐N_x Moieties for Oxygen Reduction

Liu

Huyan

Zhao

et al. 2022

Adv Materials Inter

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efficient candidates for accelerating the ORR. [4,5] However, the Pt-based catalyst possess disadvantages as high cost, scarcity, low stability, and poor methanol tolerance, which seriously hinder their application. [6] Motivated by the above, considerable efforts have been paid for exploring inexpensive and highly efficient nonprecious metal catalysts (NPMC) to take the place of the Pt-based catalyst for the ORR. [7][8][9][10][11] Pyrolyzed iron-and nitrogen-doped (Fe-N-C) materials are a group of NPMC with huge potential to replace the Pt-based catalyst for their maximum metal atom utilization and high exposure of active sites, which could yield favorable ORR performance. The active sites of Fe-N-C materials are made by the single iron atoms coordinated by nitrogen doping (Fe-N x moieties). Ding et al. reported an ion-imprinting derived strategy to develop carbon-based single-atom iron electrocatalysts with nitrogen coordination (CSAIN) with high concentrations of Fe-N 4 active sites, with a clear verification of the working mechanism of Fe-N 4 moieties during ORR process. [12] Whereas the synthesis of Fe-N-C materials is widely exercised by pyrolyzing the precursors containing iron, nitrogen, and carbon sources, technical challenges such as the low density of Fe-N x moieties and undesired ORR performance induced by the iron atoms agglomeration remain to be overcome. [13][14][15] Zeolitic-imidazolate type of metal-organic framework with coordination Zinc atoms (ZIF-8) has been frequently used in Carbon-based single-atom iron electrocatalysts with nitrogen coordination (CSAIN) have recently shown enormous promise to replace the costly Pt for boosting the cathodic oxygen reduction reaction (ORR) in fuel cells. However, there remains a great challenge to achieve highly efficient CSAIN catalysts for the ORR in acidic electrolytes. Herein, a novel CSAIN catalyst is synthesized by pyrolyzing a precursor mixture consisting of metal-organic framework and conductive polymer hybrid. After pyrolysis at a high temperature, the CSAIN with a structure of carbon nanosheet supported polyhedral carbon is achieved, where the unique structure endows CSAIN with expediting electron transfer and mass transport, as well as largely exposed surface to host atomically dispersed iron active sites. As a result, the optimal CSAIN catalyst shows a high ORR activity with its half-wave potential of 0.77 V (vs RHE) and a Tafel slope of 74.1 mV dec -1 , which are comparable to that of commercial Pt/C catalyst (0.80 V and 81.9 mV dec -1 ).

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“…Single-metal Fe PMS-AOPs Polysulfides adsorption-catalysis process ORR CO 2 RR [36,[42][43][44] Co OER Oxidation of 5-hydroxymethylfurfural [45,46] Dual-metal FeCo HER ORR PMS-AOPs [47][48][49] FeCu CO 2 RR PMS-AOPs [50,51] FeNi ORR OER Photocatalytic reaction CO 2 RR [52][53][54][55] FeMo PMS-AOPs [56] FeBi PMS-AOPs [57] CuNi CO 2 RR [58] ZnCo ORR [41] To prepare catalysts with a high density of active sites, a direct way is to increase the dosage of metal ions in the synthesis process. However, the high surface free energy of metal singleatom during high-temperature synthesis makes them apt to migrate and agglomerate to form NCs or NPs.…”

Section: Application Fieldsmentioning

confidence: 99%

Recent Advance of Atomically Dispersed Dual‐Metal Sites Carbocatalysts: Properties, Synthetic Materials, Catalytic Mechanisms, and Applications in Persulfate‐Based Advanced Oxidation Process

Wei

Cui

et al. 2023

Adv Funct Materials

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Recently, atomically dispersed dual‐metal sites carbocatalysts (DMSCs) make a wave in the field of persulfate‐based advanced oxidation processes (PS‐AOPs) in light of their ≈100% atomic utilization efficiency, high density of active sites, and superior catalytic activity. This review aims to provide a state‐of‐the‐art overview on the development of DMSCs for activating PS. Initially, the types and properties of DMSCs are summarized, as well as the role of doping different heteroatoms is discussed. Subsequently, the properties of different carbon carriers and the methods for the synthesis of DMSCs are outlined. After that, the mechanism and application of DMSCs for the activation of PS toward organic contaminants degradation are revealed. Particularly, the mechanism of nonradical pathway is described, and the necessity of coupling DMSCs‐based PS‐AOPs to other processes for practical water treatment is emphasized. Finally, the formidable challenges and future research directions of DMSCs are proposed. This review is expected to provide insight into the preparation of DMSCs in the field of nanomaterials and to broaden the path for their environmental applications.

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Engineering dual metal single-atom sites with the nitrogen-coordinated nonprecious catalyst for oxygen reduction reaction (ORR) in acidic electrolyte

Cited by 38 publications

References 66 publications

Constructing atomically-dispersed Mn on ZIF-derived nitrogen-doped carbon for boosting oxygen reduction

Constructing atomically-dispersed Mn on ZIF-derived nitrogen-doped carbon for boosting oxygen reduction

Polyhedral Carbon Anchored on Carbon Nanosheet with Abundant Atomic Fe‐N_x Moieties for Oxygen Reduction

Recent Advance of Atomically Dispersed Dual‐Metal Sites Carbocatalysts: Properties, Synthetic Materials, Catalytic Mechanisms, and Applications in Persulfate‐Based Advanced Oxidation Process

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Engineering dual metal single-atom sites with the nitrogen-coordinated nonprecious catalyst for oxygen reduction reaction (ORR) in acidic electrolyte

Cited by 38 publications

References 66 publications

Constructing atomically-dispersed Mn on ZIF-derived nitrogen-doped carbon for boosting oxygen reduction

Constructing atomically-dispersed Mn on ZIF-derived nitrogen-doped carbon for boosting oxygen reduction

Polyhedral Carbon Anchored on Carbon Nanosheet with Abundant Atomic Fe‐Nx Moieties for Oxygen Reduction

Recent Advance of Atomically Dispersed Dual‐Metal Sites Carbocatalysts: Properties, Synthetic Materials, Catalytic Mechanisms, and Applications in Persulfate‐Based Advanced Oxidation Process

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Polyhedral Carbon Anchored on Carbon Nanosheet with Abundant Atomic Fe‐N_x Moieties for Oxygen Reduction