N doped graphene by ball milling

Abstract 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 ( 94%) by pyrindic-N and pyrrolic-N which facilitates the NGNS with enhanced electronic conductivity and Li-ion storage capability

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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)

  • Enhancement of Characteristics of Nitrogen-Doped

    Enhancement of Characteristics of Nitrogen-Doped

    Nitrogen-doped graphene has been prepared using the ball milling method that is known to be eco-friendly, scalable and economic. The parameters studied in the synthesis were the mass ratio of starting materials (graphite and melamine) and speed of the ball milling

  • Facile and scalable green synthesis of N-doped graphene

    Facile and scalable green synthesis of N-doped graphene

    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

  • 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

  • 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

  • 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

  • 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

  • Boosting graphene electrocatalytic efficiency in oxygen

    Boosting graphene electrocatalytic efficiency in oxygen

    Oct 18, 2021 To prepare few-layer N-doped graphene (N-Gr), a dry mixture of 50 mg of graphite microflakes and 2 g of NaCl was treated in an 80 ml silicon nitride grinding bowl with 30 balls 1 cm in diameter of Pulverisette 6 planetary ball mill (Fritsch) in argon atmosphere for 1

  • Crumpled Nitrogen-doped Graphene Wrapped Phosphorus

    Crumpled Nitrogen-doped Graphene Wrapped Phosphorus

    Herein, we design a kind of red phosphorus/crumpled nitrogen-doped graphene (P/CNG) nanocomposites with high capacity density and great rate performance as anode material for LIBs. This anode material was rationally fabricated through the scalable ball-milling method

  • 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

  • Improved superconducting properties in graphene-doped

    Improved superconducting properties in graphene-doped

    Apr 25, 2020 The microstructures of the undoped and graphene-doped samples prepared with different milling time are presented in Fig. 2.As shown in Fig. 2a, e, graphene-doped and undoped samples exhibit no difference in microstructures before high energy ball milling process. Spherical Mg particles with size of 10–20 m and nano-B powders are mixed in agate jar and the graphene flake, as marked

  • 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

  • Ball milling : a green mechanochemical approach for

    Ball milling : a green mechanochemical approach for

    Ball milling has been widely used for mechano-chemical synthesis. 8,10 We have shown that nitrogen can be effectively doped with materials by ball milling in the presence of nitrogen gas. 25,26 It was demonstrated that mechanical energy of ball milling can break the chemical bonds in solid materials and produce dangling bonds, which are very

  • PAPER Nitrogen-doped graphene by ball-milling

    PAPER Nitrogen-doped graphene by ball-milling

    Abstract: 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 m and facilitated the exfoliation of the resultant small particles into few-layer N-doped graphene nanosheets under ultrasonication

  • Nitrogen-doped graphene by ball-milling graphite with

    Nitrogen-doped graphene by ball-milling graphite with

    N-doped graphene was shown to possess a nitrogen content as high as 11.4 at.% as well as good electrical and electrochemical properties attractive for energy storageandconversion.Asfarasweareaware,thepre-paration of N-doped graphene by ball-milling gra-phite with N-containing organic compounds has not beenpreviouslyreported. Resultsanddiscussion

  • Nitrogen-doped graphene catalysts: High energy wet ball

    Nitrogen-doped graphene catalysts: High energy wet ball

    Jul 26, 2017 Abstract. 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. This research investigated nanoscale high energy wet (NHEW) ball milling for the synthesis

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

    N-doped biochar synthesized by a facile ball-milling

    Jul 15, 2019 Recently, a ball-milling method has been devised to eco-friendly produce N-doped carbon materials (e.g., graphene) , , . Ball milling uses the kinetic energy of moving balls to break chemical bonding and produce new surfaces by fracturing feedstock particles [22] , [23]

  • A novel approach to synthesize nitrogen-doped graphene in

    A novel approach to synthesize nitrogen-doped graphene in

    Dec 01, 2020 Unlike chemical exfoliation of graphene, the graphene produced by ball milling is free from few problems such as overheating, need for thermally resistant equipment and low quantity of produced graphene. Fig. 5(a) represents the particle size distribution of 48 h milled and 72 h milled graphite samples. The particle size distribution for the 48-h milled sample was found in the range of

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