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n doped graphene by ball milling

  • nitrogen-doped graphene by ball-milling graphite with

    nitrogen-doped graphene by ball-milling graphite with

    Oct 13, 2015 · 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 μ m 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 nitrogendoped graphene catalyst by high

    synthesis of nitrogendoped 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 catalysts in the experiments

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  • (pdf) synthesis of nitrogen-doped graphene catalyst by

    (pdf) synthesis of nitrogen-doped graphene catalyst by

    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,

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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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  • high-efficiency synthesis of co, n-doped carbon nanocages

    high-efficiency synthesis of co, n-doped carbon nanocages

    Feb 28, 2020 · Second, ball milling is an effective method to uniformly cover the precursor on the surface of KCl. The as-synthesized sample presents the carbon nanocage structure doped with N and Co elements and exhibits a considerably improved electrocatalytic activity with an onset potential of 0.924 V (vs. RHE). Experiment Material synthesis

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  • metal organic framework-modified nitrogen-doped graphene

    metal organic framework-modified nitrogen-doped graphene

    Dec 20, 2017 · The synthesis was carried out in a planetary ball mill machine (PM100, from Retsch Newtown, Pennsylvania). The selected N-G catalyst sample (BM-N-G-16-500) was prepared by using graphene oxide and melamine as a reactant with 500 rpm grinding speed and 16 h NHEW ball-milling process at 22 °C

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  • antimony-doped graphene nanoplatelets | nature communications

    antimony-doped graphene nanoplatelets | nature communications

    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, (c) SbGnPs

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  • microstructure and mechanical properties of aluminium

    microstructure and mechanical properties of aluminium

    Sep 06, 2018 · Ball milling The powder mixture of Al alloy and 1.0 vol.% GNSs was milled in a planetary ball mill, which was carried out in a 500 ml stainless steel jar. The confined powders were firstly ball milled at 180 rpm for 0.5 h for pre-mixing, and then at 250 …

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  • ball milling graphenes

    ball milling graphenes

    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

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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 non

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  • nitrogen-doped graphene by all-solid-state ball-milling

    nitrogen-doped graphene by all-solid-state 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

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  • facile and scalable green synthesis of n-doped graphene

    facile and scalable green synthesis of n-doped graphene

    N-graphene nanosheets were prepared first by ball milling graphite and urea followed by mixing of N-graphene and MnO2 nanoflowers that was microwaved for only a few minutes to form N-G-MnO2

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  • nitrogendoped graphene catalysts: high energy wet ball

    nitrogendoped graphene catalysts: high energy wet ball

    Jul 26, 2017 · Summary. 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. In this research, nanoscale high energy wet (NHEW) ball milling is first investigated for the …

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  • one-step ball milling-prepared nano fe2o3 and nitrogen

    one-step ball milling-prepared nano fe2o3 and nitrogen

    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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  • highly effective methods of obtaining n-doped graphene by

    highly effective methods of obtaining n-doped graphene by

    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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  • ball-milled sulfur-doped graphene materials contain

    ball-milled sulfur-doped graphene materials contain

    Ball-milled sulfur-doped graphene materials obtained from two types of ball-milling apparatus, specifically made up of stainless steel and zirconium dioxide, were investigated. Zirconium dioxide-based ball-milled sulfur-doped graphene materials contain a drastically lower amount of metallic impurities than stainless steel-based ball-milled sulfur-doped graphene materials

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