Critical Review, Recent Updates on Zeolitic Imidazolate Framework‐67 (ZIF‐67) and Its Derivatives for Electrochemical Water Splitting

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(11)

Published: Nov. 30, 2021

Design and construction of low-cost electrocatalysts with high catalytic activity long-term stability is a challenging task in the field catalysis. Metal-organic frameworks (MOF) are promising candidates as precursor materials development highly efficient for energy conversion storage applications. This review starts summary basic concepts key evaluation parameters involved electrochemical water-splitting reaction. Then, different synthesis approaches reported cobalt-based Zeolitic imidazolate framework (ZIF-67) its derivatives critically reviewed. Additionally, several strategies employed to enhance electrocatalytic ZIF-67-based discussed detail. The present provides succinct insight into ZIF-67 (oxides, hydroxides, sulfides, selenides, phosphide, nitrides, telluride, heteroatom/metal-doped carbon, noble metal-supported derivatives) oxygen evolution reaction (OER), hydrogen (HER), overall water splitting Finally, this concludes associated challenges perspectives on developing best economic, durable materials.

Language: Английский

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Nanostructured metal phosphides: from controllable synthesis to sustainable catalysis

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(13), P. 7539 - 7586

Published: Jan. 1, 2021

Metal phosphides (MPs) with unique and desirable physicochemical properties provide promising potential in implementable sustainable catalytic fields including electrocatalysis, photocatalysis, mild thermocatalysis, interdisciplinary hybrid systems.

Language: Английский

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Stringing Bimetallic Metal–Organic Framework‐Derived Cobalt Phosphide Composite for High‐Efficiency Overall Water Splitting

Advanced Science, Journal Year: 2020, Volume and Issue: 7(5)

Published: Jan. 23, 2020

Water electrolysis is an emerging energy conversion technology, which significant for efficient hydrogen (H2) production. Based on the high-activity transition metal ions and alloys of ultrastable bifunctional catalyst, evolution reaction (HER) oxygen (OER) are key to achieving method by overall water splitting (OWS). This study reports that Co-based coordination polymer (ZIF-67) anchoring indium-organic framework (InOF-1) composite (InOF-1@ZIF-67) treated followed carbonization phosphorization successfully obtain CoP nanoparticles-embedded carbon nanotubes nitrogen-doped materials (CoP-InNC@CNT). As HER OER electrocatalysts, it demonstrated CoP-InNC@CNT simultaneously exhibit high performance (overpotential 153 mV in 0.5 m H2SO4 159 1.0 KOH) 270 activities reach current density 10 mA cm-2. In addition, these rods, as a cathode anode, can display excellent OWS with η10 = 1.58 V better stability, shows satisfying electrocatalyst compared control materials. ensures tight uniform growth fast nucleating stable substrate be further applied practical electrochemical reactions.

Language: Английский

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Co/CoP Heterojunction on Hierarchically Ordered Porous Carbon as a Highly Efficient Electrocatalyst for Hydrogen and Oxygen Evolution

Advanced Energy Materials, Journal Year: 2021, Volume and Issue: 11(42)

Published: Oct. 8, 2021

Abstract Designing non‐precious electrocatalysts to synergistically achieve a facilitated mass/electron transfer and exposure of abundant active sites is highly desired but remains significant challenge. Herein, composite electrocatalyst consisting dispersed Co/CoP heterojunction embedded within hierarchically ordered macroporous‐mesoporous‐microporous carbon matrix (Co/CoP@HOMC) rationally designed through the pyrolysis polystyrene sphere‐templated zeolite imidazolate framework‐67 (ZIF‐67) assemblies. The combined experimental theoretical calculations reveal that interfaces not only provide richly exposed also optimize hydrogen/water absorption free energy via electronic coupling, while interconnected macroporous structure enables superior mass all accessible sites. As result, as‐developed Co/CoP@HOMC composites exhibit outstanding catalytic activity with overpotentials 120 260 mV at 10 mA cm −2 for hydrogen evolution reaction oxygen in 1.0 m KOH, respectively. Moreover, an alkaline electrolyzer constructed by requires ultralow cell voltage 1.54 V , outperforming Pt@C||IrO 2 @C couple (1.64 V).

Language: Английский

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Electron Redistributed S‐Doped Nickel Iron Phosphides Derived from One‐Step Phosphatization of MOFs for Significantly Boosting Electrochemical Water Splitting

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(23)

Published: March 3, 2022

Abstract Nonprecious transition metal‐organic frameworks (MOFs) are one of the most promising precursors for developing electrocatalysts with high porosity and structural rigidity. This study reports synthesis efficiency based on S‐doped NiFeP. MOF‐derived NiFeP structure is synthesized by a one‐step phosphorization process using MOFs as precursor, which more convenient environment friendly, also helps retain samples’ framework. The oxygen evolution reaction (OER) hydrogen (HER) performance catalysts can be improved after partially replacing P S due to tunable electronic structure. optimized CCS‐NiFeP‐10 reaches current density 10 mA cm –2 OER an overpotential 201 mV outperforms NiFe‐based catalysts. doping plays important role in tuning Δ G values intermediates formation Ni atoms suitable value exhibits pronouncedly performance. CCS‐NiFeP‐20 sample presents excellent HER d‐band center downshifting from Fermi level. When voltage electrolytic cell 1.50 V, obtained. strategy paves way designing highly active none‐noble metal

Language: Английский

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Rational Design and Growth of MOF‐on‐MOF Heterostructures

Small, Journal Year: 2021, Volume and Issue: 17(36)

Published: July 10, 2021

Abstract Multiporous metal‐organic frameworks (MOFs) have emerged as a subclass of highly crystalline inorganic‐organic materials, which are endowed with high surface areas, tunable pores, and fascinating nanostructures. Heterostructured MOF‐on‐MOF composites recently becoming research hotspot in the field chemistry materials science, focus on assembly two or more different homogeneous heterogeneous MOFs various structures morphologies. Compared one single MOF, dual exhibit unprecedented tunability, hierarchical nanostructure, synergistic effect, enhanced performance. Due to difference inorganic metals organic ligands, lattice parameters , b c directions crystal cells could bring about subtle large structural difference. It will result composite material distinct growth methods obtain secondary MOF grown from initial MOF. In this review, authors wish mainly outline latest synthetic strategies heterostructured MOF‐on‐MOFs their derivatives, including ordered epitaxial growth, random etc., show tutorial guidelines for further development MOF‐on‐MOFs.

Language: Английский

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Nanostructured Metal Phosphide Based Catalysts for Electrochemical Water Splitting: A Review

Small, Journal Year: 2022, Volume and Issue: 18(21)

Published: March 13, 2022

Abstract Amongst various futuristic renewable energy sources, hydrogen fuel is deemed to be clean and sustainable. Electrochemical water splitting (EWS) an advanced technology produce pure in a cost‐efficient manner. The electrocatalytic evolution reaction (HER) oxygen (OER) are the vital steps of EWS have been at forefront research over past decades. low‐cost nanostructured metal phosphide (MP)‐based electrocatalysts exhibit unconventional physicochemical properties offer very high turnover frequency (TOF), low potential, mass activity with improved efficiency, long‐term stability. Therefore, they potential meet practical challenges for supporting future economy. This review discusses recent progress MP‐based catalysts emphasis given on in‐depth understanding catalytic innovative synthetic strategies through combined experimental (in situ/operando techniques) theoretical investigations. Finally, challenges, critical issues, outlook field electrolysis addressed.

Language: Английский

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Current Progress in 2D Metal–Organic Frameworks for Electrocatalysis

Small Structures, Journal Year: 2022, Volume and Issue: 4(6)

Published: Sept. 16, 2022

The 2D nanosheets of metal–organic frameworks (MOFs) have recently emerged as a promising material that makes them valuable in widespread electrocatalytic fields due to their atomic‐level thickness, abundant active sites, and large surface area. Efficient electrocatalysts for hydrogen evolution reaction (HER), oxygen (OER), overall water splitting are highly desired with low overpotentials promote the industrial applications energy conversion devices. MOF nanostructures provide long‐term stability high electrical conductivity enhance catalyst activity durability. This review briefly summarizes synthesis HER/OER/water splitting. More attention is focused on synthetic strategies derivatives. catalytic performance superior properties these materials highlighted. outperformance originates from rational design, myriad thickness. current future challenges this field scientific perspectives overcome It suggested construction can develop state‐of‐the‐art electrocatalyst environmental division.

Language: Английский

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Transition metal-based metal-organic frameworks for oxygen evolution reaction

Coordination Chemistry Reviews, Journal Year: 2020, Volume and Issue: 424, P. 213488 - 213488

Published: Aug. 11, 2020

Language: Английский

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Nanostructured transition metal compounds coated 3D porous core-shell carbon fiber as monolith water splitting electrocatalysts: A general strategy

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 423, P. 130279 - 130279

Published: May 12, 2021

Language: Английский

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