Amino acid-mediated N-doped graphene aerogels and its electrochemical properties

Yang, Zunhua; Xing, Guangjian; Hou, Pengchao; Han, Dejun

doi:10.1016/j.mseb.2017.11.028

Cited by 26 publications

(11 citation statements)

References 38 publications

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“…The D-band of 3D N-RGO was stronger than that of GO, while the G-band was weaker than GO. The ID/IG increased from 0.77 for GO to 1.12 for 3D N-RGO, declaring the products contained more defects, [13,27] which was consistent with the results of SEM. Taking lysine doped 3DN-RGO as an example, the electrode was prepared in an unconventional way.…”

Section: Resultssupporting

confidence: 87%

“…[13] Lately, Yang et al synthesize three-dimensional porous nitrogen-doped graphene aerogels using graphene oxide and six kinds of amino acid, they find that we can select different amino acids as N source to adjust N content within aerogels. [27] However, to the best of our knowledge, nitrogen doping of graphene by separately using all twenty different amino acids and their systematic estimation has not been reported so far. In this work, we reported a simple way to prepare a set of 3D N-RGO through a one-pot green hydrothermal approach by using GO as a starting material and twenty amino acids as doping agents separately.…”

Section: Introductionmentioning

confidence: 94%

“…The as-synthesized porous structures can be further beneficial for fast adsorption and diffusion of ions from electrolyte solution, which can be useful for the development of an electrochemical sensing platform. [27] For proof concept studies, we have finally used the lysine based highest nitrogendoped 3D graphene for electrochemical sensing of dopamine. Dopamine is an easily oxidizable, electrochemically active, and physiologically important molecule.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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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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“…Carbon chains can form most of the HPC, and heteroatomic functional groups (HFGs) are closely related to doping. ,, The formation process of the HPCs includes functional group detachment, carbon chain rupture, generation of free radical intermediates, and fragment recombination. , Some atoms can break off by forming H 2 O, ash, volatiles, etc., which forms pores. , Some atoms are fixed to form carbon material. , Revealing the formation/doping mechanism of HPCs is of great guiding significance for optimizing precursors and preparing HPCs. Our research group has done this at the component level, but it is far from enough.…”

Section: Introductionmentioning

confidence: 99%

Heteroatom-Rich Porous Carbons Derived from Nontoxic Green Organic Crystals for High-Performance Symmetric and Asymmetric Supercapacitors with Aqueous/Gel Electrolyte

Wang

Han

et al. 2020

ACS Sustainable Chem. Eng.

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Developing heteroatom-rich porous carbon (HPC) for electricity storage promotes the use of green sustainable energy. To efficiently prepare and optimize HPC, it is necessary to explore its formation/doping mechanism. Here, HPCs are prepared from nontoxic organic crystals, and quantum chemical calculations and ReaxFF MD simulations are performed. Effects of carbon chains and functional groups on HPCs are investigated. In micromorphology, the open-chain compound changes little and is etched into interconnected particles. The compounds containing ring chains change a lot and form 2D thin layers. The dimer forms 3D flower-like structures composed of thin layers. During doping, N in the amino group has a tendency to form pyrrolic-N, and N in the N-heterocycle has a tendency to form quaternary-N. L-lysine-derived HPC shows a large specific surface area (3353.99 m 2 g −1 ). For symmetric supercapacitor, it possesses high specific capacitance (439.11 F g −1 at 0.3 A g −1 and 265.57 F g −1 at 100 A g −1 ) and high cyclic stability (maintained 96.86% after 5000 cycles). For asymmetric supercapacitor, it shows more pseudocapacitance (accounted for 33.84% at 20 mV s −1 ) and higher specific capacitance (586.58 F g −1 at 0.3 A g −1 and 457.40 F g −1 at 100 A g −1 ). In gel electrolyte, its power density and energy density increase by 39.58% and 133.21%, respectively, with voltage rising from 1 V to 1.4 V. The results provide theoretical guidance and high-performance HPCs for clean energy storage/conversion.

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“…Методы получения гидрогелей на основе оксида графита можно разделить на две основные группы. В первой применяют химическое восстановление при помощи аскорбиновой кислоты, иодидов и иодоводородной кислоты, гидразина, сульфидов и сульфитов щелочных металлов, во второй -гидротермальный метод, проводимый в автоклаве при температурах 140-150°С [8][9][10][11][12][13][14][15][16][17]. Для получения аэрогелей предложено использовать метод криохимической сушки.…”

unclassified

3d-Структуры На Основе Восстановленного Оксида Графита И Наночастиц Золота И Их Сорбционные Свойства

Eremina¹,

Dobrovol'skii²,

Lemesh³

et al. 2020

Rossijskie nanotehnologii

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Описано получение гидро- и аэрогелей на основе восстановленного оксида графита и наночастиц золота, полученных методом Туркевича. Наночастицы золота, согласно данным просвечивающей электронной микроскопии, имеют сферическую форму и средний размер 16–18 нм. Для характеризации полученных 3D-структур использована сорбция растворов красителя метиленового голубого. Проведено сравнение сорбционных свойств гидро- и аэрогелей, показано, что аэрогель сорбирует более эффективно (>80%), чем композит на основе гидрогеля (~50%). Сформированная пористая 3D-структура аэрогеля эффективно сорбирует молекулы красителя, а наночастицы золота, входящие в состав аэрогеля, способствуют его разрушению под воздействием видимого света. Сорбция красителя аэрогелем чистого оксида графита проходит с наибольшей эффективностью при комнатной температуре, в нейтральной среде и без использования дополнительных восстановителей. Введение в аэрогели наночастиц золота позволяет увеличить эффективность сорбции на 15%.

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Amino acid-mediated N-doped graphene aerogels and its electrochemical properties

Cited by 26 publications

References 38 publications

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

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

Heteroatom-Rich Porous Carbons Derived from Nontoxic Green Organic Crystals for High-Performance Symmetric and Asymmetric Supercapacitors with Aqueous/Gel Electrolyte

3d-Структуры На Основе Восстановленного Оксида Графита И Наночастиц Золота И Их Сорбционные Свойства

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