Metal-free graphene-based catalyst—Insight into the catalytic activity: A short review

Hu, Huawen; Xin, John Haozhong; Hu, Hong; Wang, Xiaowen; Kong, Yeeyee

doi:10.1016/j.apcata.2014.11.041

Cited by 130 publications

(48 citation statements)

References 97 publications

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“…However, the catalysts used for hydrazine oxidation reaction (HOR) in direct hydrazine fuel cells (DHFC) currently involve mainly the scarcely available, expensive noble metals such as Pt [6,7]. In order to replace such unsustainable electrocatalysts with more sustainable ones, and thereby make various fuel cells find large-scale applications, there are currently research activities focusing on three major fronts [8][9][10][11][12][13][14][15][16]. The first one involves alloying Pt or noble metal catalysts with other inexpensive, non-noble metals, whereby the overall amount of Pt in the catalysts is reduced without compromising the catalysts' activity [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Fibrous porous carbon electrocatalysts for hydrazine oxidation by using cellulose filter paper as precursor and self-template

Martins

Huang

Goswami

et al. 2016

Carbon

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Hydrazine is often regarded as one of the most appealing fuels for fuel cells due to its high energy content, and also because it gives off only environmentally benign byproducts when it is used in fuel cells (cf. many other fuels produce the greenhouse gas CO 2). However, current electrocatalysts for the hydrazine oxidation reaction (HOR) in direct hydrazine fuel cells involve the expensive, unsustainable noble metals such as Pt. Herein, using cellulose filter paper both as a precursor and a self-template, we show the synthesis of nanoporous carbon electrocatalysts that can efficiently electrocatalyze HOR. To make the electrocatalysts, first cellulose filter paper is modified with metalamine complexes and then with silica shells. After carbonization of the resulting composite material at different temperatures, followed by removal of the silica shells, nanoporous carbon-based electrocatalysts are obtained. Notably, the intertwined structure of the cellulose matrix in the paper is taken advantage of to serve as selftemplate, allowing the formation of the desired fibrous, nanoporous carbon electrocatalysts. The materials show good electrocatalytic activity toward HOR, giving low overpotential and high current density. Thus, such nanoporous carbons can be good candidate materials to replace conventional metal-based catalysts commonly used in HOR and other related reactions.

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Section: Introductionmentioning

confidence: 99%

Fibrous porous carbon electrocatalysts for hydrazine oxidation by using cellulose filter paper as precursor and self-template

Martins

Huang

Goswami

et al. 2016

Carbon

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“…Graphene, graphite and carbon nanotubes belong to the family of graphitic materials based on a framework of sp 2 carbon atoms, and they are employed for several applications in different research and industrial fields that involve catalysis [1][2][3][4][5][6]. In this context they are either used as a conductive support for a series of catalytic materials [7] or as metal-free active compounds [1,8,9].…”

Section: Introductionmentioning

confidence: 99%

Anodization study of epitaxial graphene: insights on the oxygen evolution reaction of graphitic materials

Cattelan¹,

Vagin²,

Fox³

et al. 2019

Nanotechnology

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The photoemission electron microscopy and x-ray photoemission spectroscopy were utilized for the study of anodized epitaxial graphene on silicon carbide as a fundamental aspect of the oxygen evolution reaction on graphitic materials. The high-resolution analysis of surface morphology and composition quantified the material transformation during the anodization. We investigated the surface with lateral resolution <150 nm, revealing significant transformations on the epitaxial graphene and the role of multilayer edges in increasing the film capacitance.

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“…(a) UV/Vis spectra of the reaction solution during catalysis by NG/NF; (b) catalyst recycling performance; (c), (d) schematic diagram of L-H model [40] 表 1 非金属碳基材料在液相催化反应中的应用 2.2 工业气相催化反应工业生产中的气相催化反应大多数都需要在高温高压下进行 [41] , 多年来德国马普学会Fritz-Harber 研究所、中国科学院沈阳金属研究所苏党生课题组 [42] 围绕非金属碳基纳米催化材料在气相氧化脱氢反应体系的应用开展了系列研究. Diao等人 [43] [47] . 2014年, 西班牙Primo等人 [48] 报道了氧化石墨烯、掺杂的石墨烯、还原后的氧化石墨烯等用于催化乙炔选择性加氢反应研究, 通过优 [64,65] .…”

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Recent advances in metal-free carbon-based nanocatalysts

Wang

et al. 2018

Chin. Sci. Bull.

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Carbon-nitrogen/graphene composite as metal-free electrocatalyst for the oxygen reduction reaction Chinese Science Bulletin 56, 3583 (2011); Enhancing the photoelectrocatalytic performance of metal-free graphdiyne-based catalyst SCIENCE CHINA Chemistry 63, 1040 (2020); Metal-free porous nitrogen-doped carbon nanotubes for enhanced oxygen reduction and evolution reactions Science Bulletin 61, 889 (2016); Probing the intrinsic catalytic activity of carbon nanotubes for the metal-free oxidation of aromatic thiophene compounds in ionic liquids

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Metal-free graphene-based catalyst—Insight into the catalytic activity: A short review

Cited by 130 publications

References 97 publications

Fibrous porous carbon electrocatalysts for hydrazine oxidation by using cellulose filter paper as precursor and self-template

Fibrous porous carbon electrocatalysts for hydrazine oxidation by using cellulose filter paper as precursor and self-template

Anodization study of epitaxial graphene: insights on the oxygen evolution reaction of graphitic materials

Recent advances in metal-free carbon-based nanocatalysts

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