Three‐Dimensional Hierarchical Architectures Derived from Surface‐Mounted Metal–Organic Framework Membranes for Enhanced Electrocatalysis

Jia, Gan; Zhang, Wen; Fan, Guozheng; Li, Zhaosheng; Fu, Degang; Hao, Weichang; Chen, Yuan; Zou, Zhigang

doi:10.1002/anie.201708385

Cited by 202 publications

(96 citation statements)

References 35 publications

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“…[108] The synthesis was carried out by mixing ZIF-67 with melamine followed by the pyrolysis of the mixture, which leads to a 3D carbon nanotube assembly with Co@N-doped Overpotential is measured at 10 mA cm −2 ; b) Due to qualitative description of stability test results in most published work, only the duration of the chronoamperometric (or chronopotentiometric) test and the number of CV cycles are summarized in this table; c) A current density of 10 mA cm −2 is delivered by the reported cell voltage. [50] Their corresponding performance parameters are summarized in Table 2. This unique structure formation enhances the catalytic performance based on the same reasons in the previous example, that is, efficient electrolyte diffusion and contact, more exposed active sites, and faster electron transportation.…”

Section: Overall Water Splittingmentioning

confidence: 99%

Metal–Organic Framework Based Catalysts for Hydrogen Evolution

Zhu

Zou

2018

Advanced Energy Materials

405

199

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society is still heavily relying on chemical fuels. Therefore, the essential and realistic approaches to environmental and energy issues remain to be the exploration of clean and sustainable energy sources, in order to meet the ever-increasing energy demand. Thanks to its high energy density and environmental friendliness, hydrogen fuel comes into play as a muchanticipated new energy carrier, which is under intensive studies in the academic field. [4] Furthermore, we are already in the new era witnessing the transformation of hydrogen-powered technologies from science fictions to realities. UK is already in the process of replacing their traditional diesel-powered double decker buses with the hydrogen-powered version, which aims to phase out the former by 2018. [5] China announced its world's first hydrogen-powered tram, which was put into business service in the latter half of 2017. [6] Mercedes-Benz had even started its development of personal hydrogen-powered car, and Toyota had commercialized its hydrogen fuel-cell car branded "Mirai." [7,8] However, one critical issue remains to be the conflict between the hydrogen production efficiency and the demand for the mass distribution of hydrogen-powered technologies.Current industrial hydrogen production methods include coal gasification (followed by water-gas shift reaction), steam reforming, cryogenic distillation, and water splitting. [9] Coal gasification and steam reforming utilize the reaction between conventional fossil fuels and water to produce syngas (primarily CO and H 2 ) or CO 2 and H 2 mixture. However, both reactions require high temperatures (can be over 1000 °C) and pressures, which is an energy intensive process and has strict requirements on infrastructures. [10] The reaction products also need to be further separated to obtain relatively high-concentration of hydrogen. Cryogenic distillation takes the advantage of difference in gas boiling points, which can be applied to separate hydrogen from other gas components in the former two hydrogen production methods. However, cryogenic distillation is also an energy intensive process for low-temperature gas liquification. In comparison, hydrogen evolution reaction (HER) through water splitting is much-favored because of the following three prominent advantages: 1) Water splitting can be carried out at room temperature and ambient pressure, which is less restricted by infrastructure requirements. 2) Oxygen and hydrogen can be produced separately or selectively, which eliminate the need for gas separation. 3) Both the hydrogen source Highly efficient hydrogen evolution reactions (HERs) will determine the mass distributions of hydrogen-powered clean technologies in the future. Metal-organic frameworks (MOFs) are emerging as a class of crystalline porous materials. Along with their derivatives, MOFs have recently been under intense study for their applications in various hydrogen production techniques. MOF-based materials possess unique advantages, such as high specific surface area, crystalline porous str...

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Section: Overall Water Splittingmentioning

confidence: 99%

Metal–Organic Framework Based Catalysts for Hydrogen Evolution

Zhu

Zou

2018

Advanced Energy Materials

405

199

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Section: Metal‐nitrogen‐carbon Materials For the Oxygen Reduction mentioning

confidence: 99%

“…For instance, Jia et al. presented a strategy to prepare 3D hierarchical architectures by calcinating the ZIF‐67 thin‐film grown on a 3D MS substrate (Figure d‐f) . Using this method, the vertically aligned N‐doped CNTs were prepared by regulating the pyrolysis temperature.…”

Section: Metal‐nitrogen‐carbon Materials For the Oxygen Reduction mentioning

confidence: 99%

Importance of Electrocatalyst Morphology for the Oxygen Reduction Reaction

2019

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Proton/anion‐exchange membrane fuel cells (PEMFC and AEMFC), generating electricity from the H2 energy with zero‐carbon emission, have become very promising energy conversion devices to meet the increasing energy demand and reduce the dependence on fossil fuels. Currently, platinum (Pt) based materials have proven to be the most efficient electrocatalysts for the oxygen reduction reaction (ORR) at the cathode of the PEMFC and AEMFC. However, the high price and the limited reserve of Pt greatly hinder their industrial applications. Recently, transition metal‐nitrogen‐carbon (M−N−C) based material, as an efficient alternative to replace the precious metal Pt‐based material, has attracted researchers’ attention. Great contributions have been devoted to develop M−N−C based electrocatalysts. This review summarizes recent advances on M−N−C based electrocatalysts used for ORR from the point view of morphology. One‐dimensional (1D), two‐dimensional (2D), three‐dimensional (3D) and multi‐dimensional (MD) M−N−C materials were discussed thoroughly with particular attention on the relationship between the structure and the catalytic activity.

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“…[6] Yang group proceeded the pioneering work which nitrogen-containing 3D porous carbon monolith manufactured through a one-step pyrolysis method using a high quality urea loaded melamine sponge precursor. [31] Herein, researches on the heterogeneous catalysis over novel porous architecture wrapped interconnected 3D carbon foam prepared from this facile pyrolysis method are highly needed. Chen reported a 3D oxygenated carbon supercapacitor with nitrogen-doped tetrapod-separated carbon nanosheet confined within the interspace of 3D carbon material through a two-step pyrolysis from cheap melamine sponge template with the introduction of a mixture of glucose and urea.…”

Section: Introductionmentioning

confidence: 99%

Three‐Dimensional Interconnected Porous Nitrogen‐Doped Carbon Hybrid Foam for Notably Promoted Direct Dehydrogenation of Ethylbenzene to Styrene

Zhao

2019

ChemCatChem

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Owning to the high corrosion-resistance, stable structure, unique surface properties and sustainability, the carbon-base catalysts have attracted increasing interest in heterogeneous catalysis. Herein, we report a facile combining strategy to fabricate a novel three-dimensional (3D) interconnected porous nitrogen-doped carbon hybrid foam featuring with the interconnected nitrogen-doped carbon foam coated by porous nitrogen-doped carbon (NC MS @NC Glu-NH4Cl ) by annealing the freeze-dried NH 4 Cl-glucose containing aqueous solution soaked melamine sponge (MS@Glu/NH 4 Cl). The as-prepared NC MS @NC Glu-NH4Cl hybrid foam shows 1.6 times high steady-state styrene rate (4.77 mmol g À 1 h À 1 ) with 96.4 % of selectivity for direct dehydrogenation of ethylbenzene to styrene as compared to the well-established nanodiamond. This work not only generates an excellent carbon catalyst to replace the established nanodiamond for direct dehydrogenation of ethylbenzene, but also opens up a potential avenue for designing novel carbon materials towards the adsorption and supercapacitor besides acting as a promising catalyst for diverse transformations.[a] Dr.

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Three‐Dimensional Hierarchical Architectures Derived from Surface‐Mounted Metal–Organic Framework Membranes for Enhanced Electrocatalysis

Cited by 202 publications

References 35 publications

Metal–Organic Framework Based Catalysts for Hydrogen Evolution

Metal–Organic Framework Based Catalysts for Hydrogen Evolution

Importance of Electrocatalyst Morphology for the Oxygen Reduction Reaction

Three‐Dimensional Interconnected Porous Nitrogen‐Doped Carbon Hybrid Foam for Notably Promoted Direct Dehydrogenation of Ethylbenzene to Styrene

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