Engineering pristine 2D metal–organic framework nanosheets for electrocatalysis

Zhu, Dongdong; Qiao, Man; Liu, Jinlong; Tao, Tao; Guo, Chunxian

doi:10.1039/d0ta03138k

Cited by 190 publications

(127 citation statements)

References 217 publications

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“…For example, Wang et al prepared graphene-like C 3 N 4 materials with high surface area (various edge and wrinkled structures) for a Zn-air battery, and reported a peak density up to 100 mW cm −2 . [174] By taking advantage of the ORR and OER of various 2D materials (e.g., LDHs and MOF materials), [175][176][177][178][179][180] along with the above discussed geometric point defects and edge-like structures, design of high-performance energy storage devices based on the promising catalysis can be highly expectable.…”

Section: Geometric Point Defects and Edge-like Structuresmentioning

confidence: 99%

Engineering 2D Materials: A Viable Pathway for Improved Electrochemical Energy Storage

Lin

Chen

Liu

et al. 2020

Advanced Energy Materials

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Figure 1. a) The Ragone plots showing specific power against specific energy of traditional supercapacitors and electrochemical batteries. The arrows show the trends toward greater specific power for batteries and specific energy for supercapacitors. The time constant represents the charge/discharge rate. LTO: lithium titanium oxide. Reproduced with permission. [4] Copyright 2020, Springer Nature. b) Carrier mobility of some 2D materials. [41-53] c) A schematic diagram showing graphene nanoribbon with armchair and zigzag edges. The-C-OH and-CH terminated zigzag edges have similar band structure, while the-CH 2 , C=O, and C 2 O terminated zigzag edges are all metallic. d) Comparison of the areal capacitance values between graphene plane, armchair, and zigzag edges, with and without considering the SASA. e) A schematic diagram showing the synthesis route of full zigzag graphene nanoribbon. The U-shaped monomer 1 and the monomer 1a were designed for the synthesis. Reproduced with permission. [60] Copyright 2016, Springer Nature. f,g) High-resolution transmission electron microscopy (HRTEM) images of activated graphene sheets with f) wrinkled surface and g) pentagon-heptagon structure. Reproduced with permission.

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Section: Geometric Point Defects and Edge-like Structuresmentioning

confidence: 99%

Engineering 2D Materials: A Viable Pathway for Improved Electrochemical Energy Storage

Lin

Chen

Liu

et al. 2020

Advanced Energy Materials

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“…[9,30,46,47] More detailed reviews focusing on synthesis methods of 2D MOF materials are available in literature. [47,48] The top-down methods include physical [49,50] and chemical exfoliation, [51,52] which rests on breaking the weak van der Waals interactions between layers in bulk layered materials. For example, Moorthy and co-workers [49] synthesized 2D CdÀ DP MOF nanosheets by ultrasonicating layered CdÀ DP MOFs in ethanol.…”

Section: Preparation and Characterization Of 2d Mofsmentioning

confidence: 99%

“…Although the weak structural stability and surface additives of 2D MOFs fabricated by bottom-up approaches prevent the application in surfacerelated applications, it is easy to control the formation of various metal-doped 2D MOFs. [48,57] Hybrid 2D MOFs resulting from the introduction of heterocomponents (atoms, molecules etc.) into the structure could efficiently inherit the controllable morphology but modify the electronic structure to facilitate the catalytic activity for the OER.…”

Section: Preparation and Characterization Of 2d Mofsmentioning

confidence: 99%

Section: Preparation and Characterization Of 2d Mofsmentioning

confidence: 99%

“…2D MOFs can be synthesized via either top‐down or bottom‐up approaches [9,30,46,47] . More detailed reviews focusing on synthesis methods of 2D MOF materials are available in literature [47,48] . The top‐down methods include physical [49,50] and chemical exfoliation, [51,52] which rests on breaking the weak van der Waals interactions between layers in bulk layered materials.…”

Section: Preparation and Characterization Of 2d Mofsmentioning

confidence: 99%

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Recent Progress of Two‐Dimensional Metal‐Organic Frameworks and Their Derivatives for Oxygen Evolution Electrocatalysis

et al. 2020

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The development of high‐performance transition metal−based electrocatalysts for the oxygen evolution reaction (OER) is paramount for electrochemical secondary metal‐air batteries and water splitting. Two‐dimensional (2D) metal‐organic framework (MOF) nanosheets have recently emerged as a novel class of efficient electrocatalysts for OER, due to a high specific surface area, ultrasmall thickness and abundance of active sites. Here, we summarize recent progress in the preparation and characterization of 2D transition metal−based MOFs (e. g. Ni, Co and Cu), as well as their composites and derivatives, including metals/alloys, metal oxides/chalcogenides and metal phosphides/hydroxides, as OER electrocatalysts reported over the past several years. Design principles and preparation routes are presented. The performance of the electrocatalysts is directly compared in terms of overpotential (η) (thermodynamics) and electrocatalytic current density (kinetics), as well as operational stability (economics). Many of these materials exhibit superior catalytic activity compared to the noble metal−based catalysts such as RuO2 (η<300 mV at 10 mA cm−2), and considerable stability with negligible decay with operation over several hours to days. Challenges and perspectives of applying 2D MOFs and their derivatives for OER electrocatalysis are also discussed.

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Metal–Organic Framework Nanosheets: Programmable 2D Materials for Catalysis, Sensing, Electronics, and Separation Applications

Nicks¹,

Sasitharan²,

Prasad³

et al. 2021

Adv Funct Materials

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offers advantages over simple inorganic nanosheets in that a diverse range of physical and chemical properties can be programmed into their crystalline structure (Figure 1). This distinct combination of properties makes MONs ideal for a wide range of catalysis, sensing, electronics, and separation applications which will be the focus of this review.Much of the early literature in this field focused on the development of novel MON architectures and new routes towards their synthesis. A diverse range of different metal ions and organic linkers have been used to construct MONs. [4] However the field has rapidly converged on a handful of popular secondary building units (SBUs) which dominate much of the literature thanks to their reliable formation of high aspect ratio nanosheets. Popular classes of MONs that have been widely applied by different groups in applications include those based on the metal paddlewheel (PW) motif, [5][6][7] axially capped Zr and Hf clusters, [8][9][10][11] 2D zeolitic imidazolate frameworks (ZIFs), [12][13][14] and square planar Ni, Co, and Cu SBUs. [15][16][17][18] The modular structure of MONs, ease of functionalization and diverse range of materials they can be combined with means that MONs can be readily "programmed" to provide the desired topology and properties required for a given application.A wide variety of methods have been explored to synthesize MONs, either "top-down" by the exfoliation of layered metalorganic frameworks (MOFs) or "bottom-up" by assembly of molecular building blocks directly into nanosheets. The majority of top-down approaches utilize mechanical energy to overcome inter-layer interactions, such as liquid-assisted ultrasonication, [19] shear-mixing, [20] and grinding/ball-milling, [13] or the less common freeze-thaw [21] and "scotch-tape" methods. [22,23] Other methods involving photochemical, [24] electrochemical, [25] and chemical intercalation, [26] have also been developed but are less widely used. Bottom-up methodologies typically utilize surfactants or modulators to inhibit crystal growth in one dimension, [12,27,28] or layering/interfacial methods to promote anisotropic growth. [15,29,30] The use of sacrificial 2D templates has also recently emerged a promising route. [31,32] Each approach has advantages and disadvantages in terms of the thickness, lateral dimensions, size distribution, quantity and quality of the MONs produced, and the best approach therefore varies depending on the application.

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Engineering pristine 2D metal–organic framework nanosheets for electrocatalysis

Abstract: This review highlights recent advances and future opportunities in pristine MOF nanosheets for electrocatalysis.

Cited by 190 publications

References 217 publications

Engineering 2D Materials: A Viable Pathway for Improved Electrochemical Energy Storage

Engineering 2D Materials: A Viable Pathway for Improved Electrochemical Energy Storage

Recent Progress of Two‐Dimensional Metal‐Organic Frameworks and Their Derivatives for Oxygen Evolution Electrocatalysis

Metal–Organic Framework Nanosheets: Programmable 2D Materials for Catalysis, Sensing, Electronics, and Separation Applications

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