MOF derived Mesoporous Nitrogen doped Carbons with high Activity towards Oxygen Reduction

Díaz-Duran, Ana Katherine; Roncaroli, Federico

doi:10.1016/j.electacta.2017.08.055

Cited by 43 publications

(23 citation statements)

References 48 publications

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“…Anjaiah et al., reported the exchange current density values of 4×10 −4 mA cm −2 and 2×10 −4 mA cm −2 for [Co(bpy) 3 ](NO 3 ) 2 /C and [Co(bpy) 2 NO 3 ]NO 3 ⋅5H 2 O/C, respectively in pH 13. Diaz‐Duran et al., reported i 0 of 10×10 −6 mA cm −2 for Cobalt 2,3‐pyrazinedicarboxylate in 0.05 M H 2 SO 4 . Based on the Tafel slope, i 0, onset potential and surface excess, pH 11 seems to be optimum for ORR on BTAH‐Cu 2+ .…”

Section: Resultsmentioning

confidence: 99%

Redox‐Active Copper‐Benzotriazole Stacked Multiwalled Carbon Nanotubes for the Oxygen Reduction Reaction

et al. 2018

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A copper-benzotriazole metal-organic framework (MOF) was assembled on multiwalled carbon nanotubes (MWCNTs@BTAH-Cu 2 + ) by p-p interaction, and the composite was used to catalyze the oxygen reduction reaction (ORR) in pH 7, 11, and 13. This electrode catalyzes the ORR through a surface-confined redox-mediated process of the Cu 2 + /Cu + redox couple. BTAH adsorbed on MWCNTs, benzimidazole-Cu 2 + system adsorbed on MWCNTs, and pristine MWCNTs were used as reference systems to illustrate the importance of the Cu 2 + /Cu + redox couple and BTAH for ORR. ORR kinetics was characterized using the Koutecky-Levich analysis, rotating ring-disk electrode studies, and the Tafel analysis. From this analysis, the number of electrons transferred per O 2 , exchange current density, and Tafel slopes were estimated. The cyclic voltammetry studies performed for GCE/MWCNTs@BTAH-Cu 2 + before and after chronoamperometry studies (for 10 h) in the respective O 2 -saturated electrolyte solution, indicate complete stability of the adsorbed BTAH-Cu 2 + in pH 7 and 11. The surface excess values calculated from the cyclic voltammogram of MWCNTs@BTAH-Cu 2 + were used for estimating the turnover frequency pertaining to 2electron and 4-electron ORR. Based on these studies, pH 11 was identified as the optimum pH for carrying out ORR using MWCNTs@BTAH-Cu 2 + .

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Section: Resultsmentioning

confidence: 99%

Redox‐Active Copper‐Benzotriazole Stacked Multiwalled Carbon Nanotubes for the Oxygen Reduction Reaction

et al. 2018

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“…The growing world demand for energy supports the exploration and development of new materials for chemical energy conversion and storage . In this way, fuel cells, particularly H 2 /O 2 or H 2 / air batteries, have become promising candidates to provide energy for vehicles and convert H 2 (with O 2 or air) into energy produced by intermittent renewable sources such as sunlight, wind and waves . OER is the core step of anodic reaction, where the H 2 O in the solvent is oxidized to O 2 , and ORR is the main reaction of cathode reaction, in which O 2 is reduced to produce H 2 O 2 via a 2 − electron pathway, or H 2 O through a 4 − electron pathway.…”

Section: Electrocatalytic Reactionsmentioning

confidence: 99%

“…Beside the Zn‐containing MOFs, Co‐based MOFs are also popular in the research community . A unique “cage‐in‐cage” cobalt‐based MOF was chosen for a one‐step pyrolysis procedure to obtain a nuclear shell Co@C structure with ≈60 wt% Co particles in the prepared sample .…”

Section: Electrocatalytic Reactionsmentioning

confidence: 99%

Applications of Metal–Organic‐Framework‐Derived Carbon Materials

et al. 2018

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production, especially for hydroelectricity, sunlight, and wind energy, which cannot be gathered or released when they are needed. [5][6][7][8] Electrochemical energy storage devices provide a promising approach for the storage of electric energy from these sources. [9][10][11] Currently, carbonaceous materials have attracted much interest for their extensive applications including adsorption, [12] catalysis, [13] batteries, [14] fuel cells, [15,16] supercapacitors, [17,18] and drug delivery and imaging. [19] In addition, some sensors are also one of the important applications of carbonaceous materials, because they are closely related to human health. [20,21] For instance, Emran and co-workers [22] constructed ultrasensitive biosensors with N-doped mesoporous carbon (NMC)-based electrodes for in vitro monitoring of DA released from living cells. With the further study of the experiment, they also designed a series of S-doped carbon materials for a wider detection of DA, UA (uric acid), and AA (ascorbic acid). [23,24] The advantages of easy preparing, nontoxic and excellent electrical conductivity of carbonaceous materials, which are rare among energy storage materials, make carbonaceous materials superior to most of the energy storage materials. [25][26][27] There are varieties of approaches for the preparation of carbon materials, such as directly carbonizing from organic precursors, physically or chemically carbonizing from carbon, template methods using zeolites and mesoporous silica, solvothermal and hydrothermal methods with elevated temperature, the electrical arc methods, and chemical vapor decomposition (CVD) methods. [28][29][30][31][32][33][34] Among all these approaches, directly carbonizing from organic precursors is the most frequently used method to prepare nanoporous carbons (NPCs) due to its flexibility and simplicity. [35][36][37] However, these NPC materials present certain drawbacks, such as low surface areas, disordered structures, and ununiformed sizes, which will greatly limit their applications. [25] As studies have progressed, researchers found that carbon materials derived from metalorganic frameworks (MOFs) could overcome these limitations.Metal-organic frameworks, which are also named porous coordination polymers (PCPs), are crystalline porous materials with periodic network structures formed by metal ions (or metal clusters) and organic ligands. [38][39][40][41][42] They are usually prepared by solvothermal methods and used as precursors or templates to form nanostructured materials. [43][44][45] So far, many researchers have highlighted the advantages of MOFs. For Carbon materials derived from metal-organic frameworks (MOFs) have attracted much attention in the field of scientific research in recent years because of their advantages of excellent electron conductivity, high porosity, and diverse applications. Tremendous efforts are devoted to improving their chemical and physical properties, including optimizing the morphology and structure of the carbon materials, compositing them wi...

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“…It is divided into microporous carbon, mesoporous carbon, macroporous carbon and hierarchical porous carbon (Liu et al, 2010). In recent decades, researchers have prepared many porous carbons with different structures and holes, including porous carbon nanofibers (Zhao et al, 2013;He et al, 2018), carbon nanotubes (Kshetri et al, 2018), graphene (Chao et al, 2018), metal-organic framework (MOF) derived porous carbon (Liu et al, 2017;Xia et al, 2017;Díaz-Duran and Roncaroli, 2018), and other new porous carbon materials based on different methods (He et al, 2019). Although these porous carbons have excellent performance, considering the complicated preparation processes and the high-cost, it is very difficult to prepare these porous carbons industrially (Chen et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Biomass Juncus Derived Nitrogen-Doped Porous Carbon Materials for Supercapacitor and Oxygen Reduction Reaction

Yan

Song

et al. 2020

Front. Chem.

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Juncus is a perennial herb aquatic plant found worldwide, with high reproductive ability in warm regions. It has three-dimensional hierarchical porous triangular networks structures composited of tubular fibers. Here, juncus derived nitrogen-doped porous carbon (NDPC) was prepared by mixing juncus and ZnCl 2 through one-step pyrolysis and activation which is a low-cost, simple, and environmentally friendly method. The NDPC had hierarchical porous structures and a high specific surface area and was applied for supercapacitor and oxygen reduction reaction (ORR). The resulted NDPC-3-800 was prepared by mixing juncus with ZnCl 2 at a mass ratio of 1:3 and then carbonized at 800 • C, it was used as electrode material of a supercapacitor. The supercapacitor exhibited excellent specific capacitance of 290.5 F g −1 and 175.0 F g −1 in alkaline electrolyte at the current densities of 0.5 A g −1 and 50 A g −1 , respectively. The supercapacitor showed good cycle stability, and the capacitance was maintained at 94.5% after 10,000 cycles. The NDPC-5-800 was prepared by mixing juncus with ZnCl 2 at a mass ratio of 1:5 and then carbonized at 800 • C. It exhibited outstanding ORR catalytic activity and stability attributing to their high specific surface area and abundant actives sites. The juncus can derive various materials for application in different fields.

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MOF derived Mesoporous Nitrogen doped Carbons with high Activity towards Oxygen Reduction

Cited by 43 publications

References 48 publications

Redox‐Active Copper‐Benzotriazole Stacked Multiwalled Carbon Nanotubes for the Oxygen Reduction Reaction

Redox‐Active Copper‐Benzotriazole Stacked Multiwalled Carbon Nanotubes for the Oxygen Reduction Reaction

Applications of Metal–Organic‐Framework‐Derived Carbon Materials

Biomass Juncus Derived Nitrogen-Doped Porous Carbon Materials for Supercapacitor and Oxygen Reduction Reaction

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