A Phthalocyanine‐Based Layered Two‐Dimensional Conjugated Metal–Organic Framework as a Highly Efficient Electrocatalyst for the Oxygen Reduction Reaction

Zhong, Haixia; Ly, Khoa H.; Wang, Mingchao; Krupskaya, Yulia; Han, Xiaocang; Zhang, Jichao; Zhang, Jian; Kataev, V.; Büchner, B.; Weidinger, Inez M.; Kaskel, Stefan; Liu, Pan; Chen, Mingwei; Dong, Renhao; Feng, Xinliang

doi:10.1002/ange.201907002

Cited by 70 publications

(34 citation statements)

References 57 publications

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“…More recently,F eng et al have reported af amilyo fc onjugated 2D Pc-based MOFs exhibiting high electrical conductivityt hat were used for electrocatalysis. [207,208] Porphyrin- [209][210][211][212][213][214][215][216][217] and phthalocyanine-based [32,[218][219][220][221] COFs have also received al ot of attention in recent years due to their photocurrent generation properties and possible applications in optoelectronics. For example, ambipolar conducting 2D porphyrin-based COFs bearing different metalsw ere synthesized providing efficient charge transport pathways,w hich have adirect influence on their photoconductivep roperties.…”

Section: Porphyrin (Por)mentioning

confidence: 99%

Electroactive Organic Building Blocks for the Chemical Design of Functional Porous Frameworks (MOFs and COFs) in Electronics

Souto

Strutyński

Melle‐Franco

et al. 2020

Chemistry A European J

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Electroactive organic molecules have received a lot of attention in the field of electronics because of their fascinating electronic properties, easy functionalization and potential low cost towards their implementation in electronic devices. In recent years, electroactive organic molecules have also emerged as promising building blocks for the design and construction of crystalline porous frameworks such as metal–organic frameworks (MOFs) and covalent‐organic frameworks (COFs) for applications in electronics. Such porous materials present certain additional advantages such as, for example, an immense structural and functional versatility, combination of porosity with multiple electronic properties and the possibility of tuning their physical properties by post‐synthetic modifications. In this Review, we summarize the main electroactive organic building blocks used in the past few years for the design and construction of functional porous materials (MOFs and COFs) for electronics with special emphasis on their electronic structure and function relationships. The different building blocks have been classified based on the electronic nature and main function of the resulting porous frameworks. The design and synthesis of novel electroactive organic molecules is encouraged towards the construction of functional porous frameworks exhibiting new functions and applications in electronics.

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Section: Porphyrin (Por)mentioning

confidence: 99%

Electroactive Organic Building Blocks for the Chemical Design of Functional Porous Frameworks (MOFs and COFs) in Electronics

Souto

Strutyński

Melle‐Franco

et al. 2020

Chemistry A European J

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“…MOLs and MOFs have been widely investigated in a variety of electrocatalysis studies such as the hydrogen evolution reaction (HER), 5 , 88 , 89 , 91 − 95 oxygen evolution reaction (OER), 32 , 54 , 57 , 87 , 96 − 99 overall water splitting, 33 , 100 oxygen reduction reaction (ORR), 101 − 104 carbon dioxide reduction (CO 2 RR), 35 , 105 − 107 and electrocatalytic transformation of organic molecules. 34 , 108 Some reported MOLs show comparable or even better performance than benchmark noble metal-based catalysts.…”

Section: Facilitating Electron Transfer Of Mols For Electrocatalysismentioning

confidence: 99%

Metal–Organic Layers for Electrocatalysis and Photocatalysis

Cao

Wang

2020

ACS Cent. Sci.

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Metal–organic layers (MOLs) are two-dimensional analogues of metal–organic frameworks (MOFs) with a high aspect ratio and thickness down to a monolayer. Active sites on MOLs are more accessible than those on MOFs thanks to the two-dimensional feature of MOLs, which allows easier chemical modification around the catalytic center. MOLs can also be assembled with other functional materials through surface anchoring sites that can facilitate charge/energy transport through the hybrid material. MOLs are thus quite suitable for interfacial catalysis like electrocatalysis and photocatalysis. In this outlook, we focus on representative progress of constructing unique interfacial sites on MOLs with designer paths for charge separation and energy transfer, as well as cooperative cavities for superior substrate adsorption and activation. We also discuss challenges and potentials in the future development of MOL catalysts and catalysts beyond MOLs.

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“…[ 298–300 ] Furthermore, ORR is a rate‐limiting step of fuel cells. [ 301–305 ] However, the effects of external fields on these electrocatalysis have by far been rarely investigated. In theory, external field‐assisted ORR, NRR, and CO 2 RR are also feasible.…”

Section: Discussionmentioning

confidence: 99%

Promoting Electrocatalytic Hydrogen Evolution Reaction and Oxygen Evolution Reaction by Fields: Effects of Electric Field, Magnetic Field, Strain, and Light

et al. 2020

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promising alternative to fossil fuels. Water electrolysis by renewable resourcederived electricity represents a facile and green route to produce H 2. [1-13] Generally, the key to implement high-performance water splitting is to develop economically viable, efficient, and robust electrocatalysts to lower the activation potential barriers. Thus far, researchers have devoted extensive enthusiasm to the investigation of electrocatalysts. Currently, most efforts have been taken on the search for new materials, [14-16] regulation of morphology, [17] crystallinity, [18] facet, [19] component, [20-24] defect, [25,26] matter phase, [27,28] or the compositing of various materials with synergy. [29-36] However, the performances of emerging nonnoble electrocatalysts still lag behind those of noble ones. To address this issue, researchers have turned their attention beyond the electrocatalysts themselves. Field-assisted electrocatalysis is the electrocatalytic reaction proceeded in the presence of a field. It represents a promising methodology since it exerts an additional degree of freedom to engineer an electrochemical process. Inspiringly, indisputable improvements in electrocatalytic hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) have been implemented with the assist of various fields, including electric field, magnetic field, strain, and light. For example, the electrocatalytic HER of a MoS 2 nanosheet is markedly boosted by simply exploiting a back gate voltage of 5 V. [37] Its overpotential at −100 mA cm −2 is decreased from 240 to 38 mV. In addition, enhancement of alkaline water electrolysis is achieved by applying a moderate magnetic field (≤450 mT) to an electrocatalytic anode consists of highly magnetic electrocatalysts. [38] Its current density increments are beyond 100%. Furthermore, the HER activity of β-PdH x increases monotonically as the applied strain increases from 0% to 4.5%. [39] Lastly, an approximately threefold increase in current density of Au-MoS 2 for electrocatalytic HER is realized upon the illumination of IR light. [40] These results undoubtedly elucidate that applying a field during electrocataly sis opens up great opportunities toward further improving electrocatalytic activity. Moreover, this approach provides merits of facile, dynamical, continuous, reversible, and universal control. Despite fascinating achievements, these investigations are relatively scattered. The underneath mechanisms and principles Hydrogen fuel is considered as one of the most clean renewable resources, warranting it a primary alternative to fossil fuels for future energy supplies. Electrocatalytic water splitting is an eco-friendly technique for high-purity hydrogen production. However, the sluggish dynamics of its two halfreactions, hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), are tough challenges impeding the practical application of this technology. In these years, external field-assisted HER and OER have attracted extensive research interests. Herein, the effects o...

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A Phthalocyanine‐Based Layered Two‐Dimensional Conjugated Metal–Organic Framework as a Highly Efficient Electrocatalyst for the Oxygen Reduction Reaction

Cited by 70 publications

References 57 publications

Electroactive Organic Building Blocks for the Chemical Design of Functional Porous Frameworks (MOFs and COFs) in Electronics

Electroactive Organic Building Blocks for the Chemical Design of Functional Porous Frameworks (MOFs and COFs) in Electronics

Metal–Organic Layers for Electrocatalysis and Photocatalysis

Promoting Electrocatalytic Hydrogen Evolution Reaction and Oxygen Evolution Reaction by Fields: Effects of Electric Field, Magnetic Field, Strain, and Light

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