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N doped graphene by ball milling

Nitrogen-doped graphene nanosheets (NGNS) are prepared by a novel mechanochemical method via all-solid-state ball-milling graphite with urea. The ball-milling process does not only successfully exfoliate the graphite into multi-layer ( 10 layers) graphene nanosheets, but at the same time, enables the N element to be doped onto the graphene

  • Nitrogen-doped graphene by ball-milling graphite with

    Nitrogen-doped graphene by ball-milling graphite with

    N-doped graphene was prepared by ball milling of graphite with melamine. It was found that ball-milling reduced the size of graphite particles from 30 to 1 μm and facilitated the exfoliation of the resultant small particles into few-layer N-doped graphene nanosheets under ultrasonication. The as-prepared N-doped graphene nanoplatelets (NGnPs) exhibited a nitrogen content as high as 11.4 at

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  • Synthesis of nitrogen‐doped graphene catalyst by high

    Synthesis of nitrogen‐doped graphene catalyst by high

    Jul 12, 2016 The results show that the electron transfer number of the N‐G catalyst with 23.2 at% nitrogen doping content, synthesized by the high‐energy wet ball milling method, has attained a value of 3.87, which is close to the number (3.95) of Pt/C catalysts, and the grinding time was found to be a significant factor in the properties of N‐G

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  • Eco-Friendly Nitrogen-Doped Graphene Preparation and

    Eco-Friendly Nitrogen-Doped Graphene Preparation and

    Four N-doped graphene materials with a nitrogen content ranging from 8.34 to 13.1 wt.% are prepared by the ball milling method. This method represents an eco-friendly mechanochemical process that can be easily adapted for industrial-scale productivity and allows both the exfoliation of graphite and the synthesis of large quantities of functionalized graphene

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  • Large-scale preparation of B/N co-doped graphene-like

    Large-scale preparation of B/N co-doped graphene-like

    Jan 10, 2018 Boron and nitrogen co-doped graphene-like carbon (BNG) is a metal-free catalyst that has been synthesized by combining ball-milling with thermal treatment. Firstly, the edge-selectively-functionalized graphene nanoplatelets (EFGnPs) were prepared by ball milling of the pristine graphite, which can facilitate boron incorporation

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  • Highly Effective Methods of Obtaining N-Doped Graphene

    Highly Effective Methods of Obtaining N-Doped Graphene

    N-doped graphene exhibits two strong characteristic bands at 1340 cm −1 (D band) and 1580 cm −1 (G band). These bands are characteristic for graphene [38,43]. In turn, the 2D band is a characteristic peak of the graphene structure. ... Dry Ball Milling: Mechanochemical process

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  • One-step ball milling-prepared nano Fe2O3 and nitrogen

    One-step ball milling-prepared nano Fe2O3 and nitrogen

    Jan 15, 2020 Here, novel Fe-N-doped graphene is successfully synthesized via a one-step in situ ball milling method. Pristine graphite, ball milling graphene, N-doped graphene and Fe-N-doped graphene are applied in air cathodes, and enhanced performance is observed in microbial fuel cells with graphene-based catalysts

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  • Antimony-doped graphene nanoplatelets | Nature

    Antimony-doped graphene nanoplatelets | Nature

    May 22, 2015 (a) Schematic of mechanochemical ball-milling-driven doping antimony (Sb) to the edges of graphene nanoplatelets (GnPs). SEM images of (b) the pristine graphite before ball-milling

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  • One-step exfoliation and functionalization of fluorinated

    One-step exfoliation and functionalization of fluorinated

    Jun 01, 2020 Considering the simplicity and operability of solid milling method, the water-soluble N- and S-doped FGS can be obtained by mechanically milling graphene fluoride with NaNH 2 and Na 2 S , indicating that ball milling technology can achieve simultaneously the exfoliation and surface functionalization of fluorographene in suitable medium. In this

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  • Nitrogen‐doped graphene catalysts: High energy wet ball

    Nitrogen‐doped graphene catalysts: High energy wet ball

    Jul 26, 2017 Nitrogen‐doped graphene (N‐G) catalyst emerges as one of the promising non‐platinum group metal (non‐PGM) catalysts with the advantages of low cost, high oxygen reduction reaction (ORR) activity, stability, and selectivity to replace expensive PGM catalysts in electrochemical systems

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  • Graphitic carbon nitrides supported by nitrogen-doped

    Graphitic carbon nitrides supported by nitrogen-doped

    3N [email protected]) produced by ball milling g-C 3N 4 prepared from pyrolysis of cyanamide under a flow of argon gas and N-doped graphene from modified Hummer’s method. 2. Experimental section 2.1. Synthesis of graphitic carbon nitride from cyanamide The graphitic carbon nitride was prepared by pyrolysis of cya-namide under a flow of argon gas

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  • (PDF) Synthesis of nitrogen-doped graphene catalyst by

    (PDF) Synthesis of nitrogen-doped graphene catalyst by

    Ju et al. [49] found that N in forms of pyrrolic-N and pyridinic-N can be successfully doped on the surface of graphite by ball-milling (500 rpm and 48 h) in N 2 atmosphere, due to the exothermic

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  • Novel cost-effective synthesis of non-doped turbostratic

    Novel cost-effective synthesis of non-doped turbostratic

    Novel cost-effective synthesis of non-doped turbostratic graphene from a graphite intercalation compound: development of a durable and stable electrocatalyst for the oxygen reduction reaction ... practical scalable procedure to produce few-layer graphene sheets using ball-milling is reported, which can be efficiently used to exfoliate graphite

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  • PAPER Nitrogen-doped graphene by ball-milling

    PAPER Nitrogen-doped graphene by ball-milling

    Scheme 1b, the resulted N-doped graphene is highly disperseable in water. Scheme 1. (a) The formation of N-doped graphene by ball milling graphite with melamine, and (b) the resulting N-doped graphene dispersed in water. 32 Figure 1a reproduces a typical SEM image of the pristine graphite before ball

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  • Nitrogen-doped graphene catalysts: High energy wet ball

    Nitrogen-doped graphene catalysts: High energy wet ball

    Jul 26, 2017 @article{osti_1425062, title = {Nitrogen-doped graphene catalysts: High energy wet ball milling synthesis and characterizations of functional groups and particle size variation with time and speed}, author = {Zhuang, Shiqiang and Nunna, Bharath Babu and Boscoboinik, Jorge Anibal and Lee, Eon Soo}, abstractNote = {Nitrogen-doped graphene (N-G) catalyst emerges as one of the promising

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  • A novel approach to synthesize nitrogen-doped graphene in

    A novel approach to synthesize nitrogen-doped graphene in

    Dec 01, 2020 Systematic report on the synthesis of Nitrogen-doped graphene (N-doped GNP) via solid-state ball milling of graphite with melamine powder is represented in the article. At the first time, the article briefs the mathematical representation for energy released at different speed of rotation of planetary ball mill using the various diameter of balls

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  • N-doped biochar synthesized by a facile ball-milling

    N-doped biochar synthesized by a facile ball-milling

    Jul 15, 2019 Xue et al. ball-milled graphene with melamine at 500 rpm for 48 h with three different nitrogen species being introduced to the N-doped graphene, namely pyridinic N, pyrrolic N, and graphitic N. Therefore, the operating parameters for ball milling should be adjusted in order to form different N species in the resulting N-doped biochar or other

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  • Atomic dispersion of Fe/Co/N on graphene by ball-milling

    Atomic dispersion of Fe/Co/N on graphene by ball-milling

    May 31, 2018 Atomic Fe/Co/N tri-doped graphene (ref as FeCoN-Gs) was synthesized by following a one-step ball milling protocol. This was accomplished by ball milling graphite, melamine and iron/cobalt (II) chloride in a planetary ball mill instrument equipped with stainless steel vial (see the experimental section for details)

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  • Facile and scalable green synthesis of N-doped graphene

    Facile and scalable green synthesis of N-doped graphene

    Mar 01, 2021 A doable, low cost, green and scalable method is demonstrated to synthesize N-doped graphene/CNTs composite using humic acid (HA) and urea via ball mill technique. The structural characterizations were investigated by scanning electron microscopy (SEM), Raman spectroscopy, and X-ray diffraction (XRD)

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