Ordered carbonaceous frameworks: a new class of carbon materials with molecular-level design

Yoshii, Tadashi; Chida, Kouichi; Nishihara, Hirotomo; Tani, Fumito

doi:10.1039/d1cc07228e

Cited by 21 publications

(19 citation statements)

References 132 publications

(238 reference statements)

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“…Emulating their 3D active-site structure would require a well-controlled synthetic pathway, which is likely not possible with biomass. Instead, new classes of materials are required that can withstand practical device conditions with sufficient porosity and conductivity while maintaining a 3D structure; this can possibly be achieved using ordered carbonaceous frameworks , or carbon materials derived from tailored metal organic frameworks. , Assessment of the bioinspired active site structure and degradation. The structure of bioinspired active sites that contain single- or dual-metal atoms is highly challenging and often leads to controversy in the field.…”

Section: Discussionmentioning

confidence: 99%

“…Meanwhile, new generations of porphyrinic metal–organic frameworks (MOFs) with tailored spacing could provide another pathway to 3D dual-metal-atom sites, with structurally similar designs predicted by DFT circumventing scaling relations for ORR . What has yet to be demonstrated is a robust and conductive 3D dual-metal-atom catalyst able to withstand the harsh conditions of a fuel cell, which could potentially be provided by a new class materials termed “ordered carbonaceous frameworks”. , Interestingly, Svane et al modeled porphyrin-like cofacial dual-atom CoN 4 C 12 and in-plane Co 2 N 6 /graphene sites (with O bound on the opposing side) for ORR and found that only the in-plane site results in a significant deviation from scaling relations, which could be potentially further improved by substituting the Co atoms with other metals . Compared to experimental results, synthesized in-plane dual-metal atoms of Co, determined as Co 2 N 5 (derived from pyrolyzed Co-doped ZIF-8), have been reported to exhibit mass activity over an order of magnitude higher compared to their single-atom-site Co counterparts (at 0.75 V vs RHE) .…”

Section: Bioderived and Bioinspired Catalysts For Orr And Hormentioning

confidence: 99%

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Bioinspired and Bioderived Aqueous Electrocatalysis

et al. 2022

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The development of efficient and sustainable electrochemical systems able to provide clean-energy fuels and chemicals is one of the main current challenges of materials science and engineering. Over the last decades, significant advances have been made in the development of robust electrocatalysts for different reactions, with fundamental insights from both computational and experimental work. Some of the most promising systems in the literature are based on expensive and scarce platinum-group metals; however, natural enzymes show the highest per-site catalytic activities, while their active sites are based exclusively on earth-abundant metals. Additionally, natural biomass provides a valuable feedstock for producing advanced carbonaceous materials with porous hierarchical structures. Utilizing resources and design inspiration from nature can help create more sustainable and cost-effective strategies for manufacturing cost-effective, sustainable, and robust electrochemical materials and devices. This review spans from materials to device engineering; we initially discuss the design of carbon-based materials with bioinspired features (such as enzyme active sites), the utilization of biomass resources to construct tailored carbon materials, and their activity in aqueous electrocatalysis for water splitting, oxygen reduction, and CO 2 reduction. We then delve in the applicability of bioinspired features in electrochemical devices, such as the engineering of bioinspired mass transport and electrode interfaces. Finally, we address remaining challenges, such as the stability of bioinspired active sites or the activity of metal-free carbon materials, and discuss new potential research directions that can open the gates to the implementation of bioinspired sustainable materials in electrochemical devices.

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Section: Discussionmentioning

confidence: 99%

Section: Bioderived and Bioinspired Catalysts For Orr And Hormentioning

confidence: 99%

Bioinspired and Bioderived Aqueous Electrocatalysis

et al. 2022

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“…There are various types of porous carbons such as activated carbons, porous carbon blacks, carbon gels, [1][2][3][4][5][6][7] templated carbons, [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] carbide-derived carbons, [23] porous carbon frameworks derived from metal-organic frameworks [24][25][26][27] as well as organic crystals, [28][29][30] and ordered carbonaceous frameworks. [31][32][33][34][35] Representative porous carbons are activated carbons (Fig. 1a) which can be prepared by physical or chemical activation.…”

Section: Introductionmentioning

confidence: 99%

Adsorption properties of templated nanoporous carbons comprising 1–2 graphene layers

et al. 2022

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A variety of vapor adsorption (water, methanol, ethanol, dichloromethane, and n-hexane) is examined on templated nanoporous carbons consisting of 1-2 graphene layers including microporous zeolite-templated carbon (ZTC), mesoporous carbon mesosponge (CMS) and graphene mesosponge (GMS). Conventional nanoporous carbon materials are used as references. While water-vapor adsorption is peculiar because of the repulsion between H2O molecules and hydrophobic carbon, organic-vapor adsorption basically follows the mechanism of typical physisorption. The graphene-based nanoporous materials exhibit a noticeable degree of adsorption-induced expansion from their extraordinary softness except the case of inferior water-vapor adsorption on mesoporous CMS and GMS. CMS exhibits an especially large degree of adsorption-induced expansion, and achieved very high adsorption capacities up to 4.25-4.76 cm 3 g -1 for organic vapors, demonstrating its feasibility as a high-capacity adsorbent. The adsorption isotherms of ZTC at 278 K and 298 K for n-hexane are overlapping well, and it is advantageous for a new type of heat pump working with force-induced phase transition. Moreover, this work provides a general prediction of the ease of organic-vapor adsorption by the product of surface tension and molar volume.

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“…Since 2014, as the most newly discovered materials, the electrochromic effects of reduced graphene oxide (RGO), [12] coordination nanosheets (CONASHs), [13] copper chalcogenides, [14,15] covalent organic frameworks (COFs), [16] transition metal carbides/nitrides/carbonitrides (MXenes), [17] and hydrogen-bonded organic frameworks (HOFs) [18] are reported in succession, which has significantly renewed research interest. The emerging 2D materials [19][20][21][22][23][24] exhibit unique physical and chemical properties compared with traditional ones, and these differences may drastically improve the electrochromic performance in many cases. For example, the ultrahigh specific surface area and large van der Waals gap could accelerate ion transportation rates on the micro-level and switching speeds in ECDs on the macro.…”

Section: Introductionmentioning

confidence: 99%

Nanoarchitectonics of Two‐Dimensional Electrochromic Materials: Achievements and Future Challenges

Tian

et al. 2022

Adv Materials Technologies

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Electrochromic effect has been discovered in many materials with a wide range of applications from visible to infrared, such as smart windows, electronic displays, infrared camouflage, and color‐changeable tactile sensor. However, conventional electrochromic materials cannot meet the growing demand for electrochromic performance in terms of optical contrast, response time, durability, color diversity, and flexibility, which slows down developments in this area. This is mainly due to the limited number and variety of electrochromic materials. In strong contrast, nanoarchitectonics of 2D materials with atomically thin thickness, large lateral size, and diversified series can be an effective way to address these issues and improve the electrochromic performances. This review highlights the recent achievements of emerging 2D electrochromic materials, namely covalent organic frameworks, coordination nanosheets, and transition metal carbides/nitrides/carbonitrides (MXenes). The structures, electrochromic performances and their structure–performance relationship, and future challenges of these materials have been systematically explored. This review can pave a new avenue for the promotion of the nanoarchitectonic 2D materials for the up‐scaled practical electrochromic applications.

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Ordered carbonaceous frameworks: a new class of carbon materials with molecular-level design

Abstract: Ordered carbonaceous frameworks (OCFs) are a new class of carbon materials with a three-dimensional ordered structure synthesized by simple carbonization of metalloporphyrin crystals with polymerizable moieties. Carbonization via solid-state polymerization...

Cited by 21 publications

References 132 publications

Bioinspired and Bioderived Aqueous Electrocatalysis

Bioinspired and Bioderived Aqueous Electrocatalysis

Adsorption properties of templated nanoporous carbons comprising 1–2 graphene layers

Nanoarchitectonics of Two‐Dimensional Electrochromic Materials: Achievements and Future Challenges

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