Growth of N-doped graphene from nitrogen containing aromatic compounds: the effect of precursors on the doped site

Katoh, Tokio; Imamura, Gaku; Obata, Seiji; Saiki, Koichiro

doi:10.1039/c5ra22664c

Cited by 32 publications

(19 citation statements)

References 60 publications

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“…These fragments are then removed from the Pt(111) surface by forming volatile C 2 N 2 or HCN molecules, and pristine graphene is created [41]; when pyridine (C 5 H 5 N) is used as the precursor at relatively low temperatures, this does not happen and NG is produced. A similar analysis was performed by Katoh et al [42]; the authors grew NG with four aromatic nitrogen-containing precursors, quinoline (C 9 H 7 N), pyridine (C 5 H 5 N), pyrrole (C 4 H 5 N), and pyrimidine (C 4 H 4 N 2 ) on Pt(111) at a relatively low temperature of 500 °C. They found that the aromatic molecules that had the highest activation energies for the breaking of the aromatic ring had the highest dopant concentration.…”

Section: Preparation Of Nitrogen Doped Graphenementioning

confidence: 72%

Controlling Nitrogen Doping in Graphene with Atomic Precision: Synthesis and Characterization

et al. 2019

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Graphene provides a unique platform for the detailed study of its dopants at the atomic level. Previously, doped materials including Si, and 0D-1D carbon nanomaterials presented difficulties in the characterization of their dopants due to gradients in their dopant concentration and agglomeration of the material itself. Graphene’s two-dimensional nature allows for the detailed characterization of these dopants via spectroscopic and atomic resolution imaging techniques. Nitrogen doping of graphene has been well studied, providing insights into the dopant bonding structure, dopant-dopant interaction, and spatial segregation within a single crystal. Different configurations of nitrogen within the carbon lattice have different electronic and chemical properties, and by controlling these dopants it is possible to either n- or p-type dope graphene, grant half-metallicity, and alter nitrogen doped graphene’s (NG) catalytic and sensing properties. Thus, an understanding and the ability to control different types of nitrogen doping configurations allows for the fine tuning of NG’s properties. Here we review the synthesis, characterization, and properties of nitrogen dopants in NG beyond atomic dopant concentration.

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Section: Preparation Of Nitrogen Doped Graphenementioning

confidence: 72%

Controlling Nitrogen Doping in Graphene with Atomic Precision: Synthesis and Characterization

et al. 2019

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“…Katoh et al earlier have reported that molecules with pyrrole based five membered nitrogen containing structures is highly favorable for using as a nitrogen dopant for graphene. [31] However, due to their structural dissimilarity, they were mostly incorporated at the edges of graphene. Following this trend, the higher contribution for nitrogen doping by tryptophan and proline can be explained.…”

Section: Resultsmentioning

confidence: 99%

Amino Acid Assisted One‐Pot Green Synthesis of N‐Doped 3D Graphene for Ultrasensitive Neurochemical Sensing

Zhang

Chen

et al. 2020

ChemistrySelect

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Graphene is undoubtedly one of the most promising materials in the last decade due to its outstanding physicochemical properties. However, in order to use graphene for diverse electrochemical or device-based applications, it is mandatory to tune its electronic properties through doping. 3D graphene is three-dimensional structural arrangement of its 2D sheets. In this work, we have explored a simple, one-pot hydrothermal reaction approach to synthesize nitrogen doped 3D graphene (3D N-RGO) structure by using graphene oxide (GO) as raw material and amino acids as nitrogen doping agent. Twenty different amino acids were individually used as doping agents and each of their nitrogen doping ability in graphene were carefully analyzed by using x-ray photoelectron spectroscopic (XPS) analysis. The results demonstrated that a great majority of amino acids can enable nitrogen doping except for tyrosine and phenylalanine whose-R group has benzene group. Among others, lysine, histidine, tryptophan and proline have relatively higher doping amount of nitrogen compared with others. Lysine has shown the highest doping efficiency. Furthermore, lysine induced 3D N-RGO was used for proof-of-concept electrochemical sensing of neurochemical dopamine with a lower limit of detection of 2.8 μM and high sensitivity of 40.81 mA mM À 1 .

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“…N 1s peak of XPS for P4VP positioned at 399 eV showed a visible shift to a slightly higher binding energy in the resulting compound, indicating a variation in the charge due to the formation of Co-N bonds ( Fig. S1) [25]. Furthermore, the shoulder observed at 399 eV, can be attributed to the pyridyl groups of P4VP, which are not coordinated to cobalt ion.…”

Section: Synthesis and Characterizationmentioning

confidence: 97%

Electrocatalytic hydrogen evolution with cobalt–poly(4-vinylpyridine) metallopolymers

et al. 2018

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A facile synthetic pathway using poly(4-vinylpyridine) as a polypyridyl platform is reported for the formation of a metallopolymer. Electrochemical studies indicate that the metallopolymer acts as an efficient H 2 evolution catalyst similar to cobalt polypyridyl complexes. It is also observed that the metallopolymer is transformed to cobalt particles when a cathodic potential is applied in the presence of an acid. Electrochemical measurements indicate that an FTO electrode coated with these cobalt particles also acts as an efficient hydrogen evolution catalyst. Approximately 80 µmoles of H 2 gas can be collected during 2 h of electrolysis at − 1.5 V (vs. Fc +/0) in the presence of 60 mM of acetic acid. A comprehensive study of the electrochemical and electrocatalytic behavior of cobalt-poly(4-vinylpyridine) is discussed in detail.

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Growth of N-doped graphene from nitrogen containing aromatic compounds: the effect of precursors on the doped site

Abstract: Nitrogen doped graphene was synthesized from four kinds of nitrogen-containing aromatic compounds: quinoline, pyridine, pyrrole, and pyrimidine on Pt(111) at a variety of temperatures.

Cited by 32 publications

References 60 publications

Controlling Nitrogen Doping in Graphene with Atomic Precision: Synthesis and Characterization

Controlling Nitrogen Doping in Graphene with Atomic Precision: Synthesis and Characterization

Amino Acid Assisted One‐Pot Green Synthesis of N‐Doped 3D Graphene for Ultrasensitive Neurochemical Sensing

Electrocatalytic hydrogen evolution with cobalt–poly(4-vinylpyridine) metallopolymers

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