Synergistic effect of Nitrogen-doped hierarchical porous carbon/graphene with enhanced catalytic performance for oxygen reduction reaction

Kong, Dewang; Yuan, Wenjing; Li, Cun; Song, Ji‐Ming; Xie, Anjian; Shen, Yuhua

doi:10.1016/j.apsusc.2016.10.019

Cited by 44 publications

(13 citation statements)

References 49 publications

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“…In all the composite samples, the weight percentages of CoFe2O4 NPs were comparable, at approximately 22 wt%-24 wt% (Table S1, Supporting Information), as determined by inductively coupled plasma mass spectroscopy. The degree of graphene oxide reduction is a key factor for improving the electrical conductivity, as it is governed chiefly by the recovery of π-conjugation within the GO sheets upon hydrothermal reduction [34]. According to the Fourier-transform infrared spectra (Fig.…”

Section: Characterization and Analysismentioning

confidence: 99%

3D hierarchically macro-/mesoporous graphene frameworks enriched with pyridinic-nitrogen-cobalt active sites as efficient reversible oxygen electrocatalysts for rechargeable zinc-air batteries

Zhou¹,

Qin²,

Zhao³

et al. 2021

Chinese Journal of Catalysis

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Section: Characterization and Analysismentioning

confidence: 99%

3D hierarchically macro-/mesoporous graphene frameworks enriched with pyridinic-nitrogen-cobalt active sites as efficient reversible oxygen electrocatalysts for rechargeable zinc-air batteries

Zhou¹,

Qin²,

Zhao³

et al. 2021

Chinese Journal of Catalysis

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“…The four-electron transfer pathway is normally observed in alkaline solutions [107], while, in acidic environments, two-electron transfer is the more favoured reaction for carbon-based materials [116]. However, some N-doped or N-treated graphene-based electrodes have been found to catalyse the four-electron reduction in aqueous acid solutions [117,118]. Kurak and Anderson [119] have used a linear Gibbs energy relationship applied to N-doped graphene composites to predict the reversible potential for the formation of oxygen reduction reaction intermediates in acid.…”

Section: Doping Of Graphene-based Materialsmentioning

confidence: 99%

Graphene-Modified Composites and Electrodes and Their Potential Applications in the Electro-Fenton Process

Tian

Breslin

2020

Materials

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In recent years, graphene-based materials have been identified as an emerging and promising new material in electro-Fenton, with the potential to form highly efficient metal-free catalysts that can be employed in the removal of contaminants from water, conserving precious water resources. In this review, the recent applications of graphene-based materials in electro-Fenton are described and discussed. Initially, homogenous and heterogenous electro-Fenton methods are briefly introduced, highlighting the importance of the generation of H2O2 from the two-electron reduction of dissolved oxygen and its catalysed decomposition to produce reactive and oxidising hydroxy radicals. Next, the promising applications of graphene-based electrodes in promoting this two-electron oxygen reduction reaction are considered and this is followed by an account of the various graphene-based materials that have been used successfully to give highly efficient graphene-based cathodes in electro-Fenton. In particular, graphene-based composites that have been combined with other carbonaceous materials, doped with nitrogen, formed as highly porous aerogels, three-dimensional materials and porous gas diffusion electrodes, used as supports for iron oxides and functionalised with ferrocene and employed in the more effective heterogeneous electro-Fenton, are all reviewed. It is perfectly clear that graphene-based materials have the potential to degrade and mineralise dyes, pharmaceutical compounds, antibiotics, phenolic compounds and show tremendous potential in electro-Fenton and other advanced oxidation processes.

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“…In the recent years, many research papers have been focused on finding efficient and low cost materials which overcome the Pt limitation, such as low abundance, the sluggish oxygen reduction reaction (ORR) and methanol crossover. Therefore, decreasing or replacing the noble metal with low price elements , using metal free and carbon based materials have been proposed and applied for the ORR. Carbon nanotube , , graphene , graphene oxide and carbon mesoporous with low cost and enhanced electrical conductivity have been used as the substrate which supporting the ORR active sites.…”

Section: Introductionmentioning

confidence: 99%

One Step Synthesis of Tertiary Co‐doped Graphene Electrocatalyst Using Microalgae Synechococcus elangatus for Applying in Microbial Fuel Cell

Hassani¹,

Ziaedini

Samiee³

et al. 2019

Fuel Cells

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In this work, heteroatom‐doped porous graphene was synthesized by pyrolysis method using microalgae Synechococcus elangatus as a biomass resource. The prepared samples were characterized by X‐ray diffraction (XRD), N2 sorption‐desorption, field emission scanning electron microscopy (FESEM) and X‐ray photoelectron spectroscopy (XPS). The electrochemical behavior of the synthesized samples was investigated for oxygen reduction reaction (ORR) and evaluated using microbial fuel cell (MFC). The results revealed that the catalytic activity of the prepared sample including N, S and P atoms on porous graphene (PG) was close to the Pt/C 20 wt.%. According to the linear sweep voltammetry (LSV) measurements, the onset potential of optimal sample (0.97 V versus RHE) was close to the Pt/C 20 wt.% (0.99 V versus RHE). Furthermore, the stability test demonstrated much better tolerance to the methanol crossover effects for the optimal sample in comparison to the Pt/C 20 wt.%. Moreover, the microbial fuel cell (MFC) test showed that the cell potential of the optimal sample is close to Pt/C 2 wt.%, and represented a high peak power density of 31.5 mW m−2, which is comparable to the Pt/C 20wt.% (38.6 mW m−2) cathodes, because of synergistic effect of N, S and P co‐doped carbon structure, which leads to improvement in catalytic activity.

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Synergistic effect of Nitrogen-doped hierarchical porous carbon/graphene with enhanced catalytic performance for oxygen reduction reaction

Cited by 44 publications

References 49 publications

3D hierarchically macro-/mesoporous graphene frameworks enriched with pyridinic-nitrogen-cobalt active sites as efficient reversible oxygen electrocatalysts for rechargeable zinc-air batteries

3D hierarchically macro-/mesoporous graphene frameworks enriched with pyridinic-nitrogen-cobalt active sites as efficient reversible oxygen electrocatalysts for rechargeable zinc-air batteries

Graphene-Modified Composites and Electrodes and Their Potential Applications in the Electro-Fenton Process

One Step Synthesis of Tertiary Co‐doped Graphene Electrocatalyst Using Microalgae Synechococcus elangatus for Applying in Microbial Fuel Cell

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