Electrochemical catalytic mechanism of N-doped graphene for enhanced H2O2 yield and in-situ degradation of organic pollutant

Su, Pei; Zhou, Minghua; Lu, Xiaoye; Yang, Wenzhong; Ren, Gang; Cai, Jingju

doi:10.1016/j.apcatb.2018.12.075

Cited by 255 publications

(67 citation statements)

References 79 publications

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“…The highest H 2 O 2 selectivity of NCF1000 is 81.9% while that of NCF800 is 78.0%. At pH 6-9, the H 2 O 2 selectivity of NCF1000 remained above 70% and was even higher than recently reported N-doped graphene (75.9%) in pH 7 (Su et al 2019), indicating that it can be used as cathode for H 2 O 2 generation in neutral medium. Remarkably, both NCF1000 and NCF800 present the highest H 2 O 2 selectivity at À0.6 V. H 2 O 2 selectivity decreased with the applied potential negative shift, revealing À0.6 V may be the optimized working potential.…”

Section: Characterizations Of Ncf Electrodementioning

confidence: 54%

N-doped three-dimensional carbon foam as binder-free electrode for organic pollutants removal by electro-Fenton in neutral medium

et al. 2019

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Electro-Fenton in neutral medium has attracted more and more attention since it can relieve the costs of H2O2 storage and pH adjustment, which are the major disadvantages limiting the practical applications of Fenton reaction. The electrode with good performance for electrochemical H2O2 production from O2 in neutral medium is of great importance in electro-Fenton. Herein, the N-doped three-dimensional carbon foam (NCF) electrode was obtained by using melamine foam as precursor. The nitrogen functional groups and graphitization degree could be tailored by adjusting the carbonization temperature. NCF1000, the sample carbonized at 1,000 °C, presents the H2O2 selectivity of 81.9%, which is the highest among those of other NCFs. The H2O2 concentration in neutral medium on NCF1000 achieved 0.87 mmol L−1 at −0.6 V, which is 1.8, 2 and 2.6 times as much as those on graphite, carbon cloth and carbon felt. Using as cathode in electro-Fenton, NCF1000 exhibits the kinetic rate of 0.062 min−1 for phenol degradation, which is 4.1 times larger than that on graphite electrode. As well, the performance of NCF1000 shows no visible attenuation after ten times phenol removal experiments, demonstrating its good reusability. These results indicate the potential of NCF as a promising alternative for commercial carbon-based electrode in electro-Fenton.

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Section: Characterizations Of Ncf Electrodementioning

confidence: 54%

N-doped three-dimensional carbon foam as binder-free electrode for organic pollutants removal by electro-Fenton in neutral medium

et al. 2019

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“…Third, N doping facilitates the adsorption of H– and HH bonds. Thus, a small amount of N doping improve the enrichment capacity of NPB to the target HQ and CA …”

Section: Resultsmentioning

confidence: 99%

Simultaneous Determination of Hydroquinone and Catechol by N‐doped Porous Biochar‐modified Electrode

Liu

Cao

et al. 2020

Bulletin Korean Chem Soc

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N‐doped porous biochar (NPB) with large conjugated systems could not only be used as enrichment carriers but also be in favor of electron transport in the electrochemical detection. The NPB‐modified electrode was fabricated for the simultaneous detection of catechol (CA) and hydroquinone (HQ) to enhance the signal‐to‐noise ratio and further improve the sensitivity. A detection limit as low as 37 and 47 nM was achieved for CA and HQ, respectively. The proposed strategy with the merits of high sensitivity, selectivity, and reproducibility exhibited a great potential for the detection.

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“…The direct hydrogen peroxide production from the oxygen is particularly important for the on-site treatment of organic pollutants through the electro-Fenton process. [46][47][48][49] To take up the above challenges, we aim in the present study to interrogate physico-chemically and electro-catalytically the effect of the molar ratio Our outcomes demonstrate that the different engineered types of bismuth-based micro-and nanostructured materials exhibit distinct surface and catalytic properties when the as-synthesized materials are employed in the specific application of electrochemical hydrogen peroxide production from oxygen.…”

Section: Cathodementioning

confidence: 99%

Tartaric acid regulated the advanced synthesis of bismuth-based materials with tunable performance towards the electrocatalytic production of hydrogen peroxide

et al. 2020

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Electrochemical catalytic mechanism of N-doped graphene for enhanced H2O2 yield and in-situ degradation of organic pollutant

Cited by 255 publications

References 79 publications

N-doped three-dimensional carbon foam as binder-free electrode for organic pollutants removal by electro-Fenton in neutral medium

N-doped three-dimensional carbon foam as binder-free electrode for organic pollutants removal by electro-Fenton in neutral medium

Simultaneous Determination of Hydroquinone and Catechol by N‐doped Porous Biochar‐modified Electrode

Tartaric acid regulated the advanced synthesis of bismuth-based materials with tunable performance towards the electrocatalytic production of hydrogen peroxide

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