Designing MOF Nanoarchitectures for Electrochemical Water Splitting

Advanced Materials, Год журнала: 2021, Номер 33(17)

Опубликована: Март 22, 2021

Abstract Electrochemical water splitting has attracted significant attention as a key pathway for the development of renewable energy systems. Fabricating efficient electrocatalysts these processes is intensely desired to reduce their overpotentials and facilitate practical applications. Recently, metal–organic framework (MOF) nanoarchitectures featuring ultrahigh surface areas, tunable nanostructures, excellent porosities have emerged promising materials highly active catalysts electrochemical splitting. Herein, most pivotal advances in recent research on engineering MOF are presented. First, design catalytic centers MOF‐based/derived summarized compared from aspects chemical composition optimization structural functionalization at atomic molecular levels. Subsequently, fast‐growing breakthroughs activities, identification sites, fundamental mechanisms thoroughly discussed. Finally, comprehensive commentary current primary challenges future perspectives its commercialization hydrogen production provided. Hereby, new insights into synthetic principles electrocatalysis designing utilization offered, thus further promoting prosperity wide range

Язык: Английский

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Activity Trends and Mechanisms in Peroxymonosulfate‐Assisted Catalytic Production of Singlet Oxygen over Atomic Metal‐N‐C Catalysts

Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(41), С. 22513 - 22521

Опубликована: Авг. 13, 2021

Abstract We synthesized a series of carbon‐supported atomic metal‐N‐C catalysts (M‐SACs: M=Mn, Fe, Co, Ni, Cu) with similar structural and physicochemical properties to uncover their catalytic activity trends mechanisms. The peroxymonosulfate (PMS) are Fe‐SAC>Co‐SAC>Mn‐SAC>Ni‐SAC>Cu‐SAC, Fe‐SAC displays the best single‐site kinetic value (1.65×10 5 min −1 mol ) compared other species. First‐principles calculations indicate that most reasonable reaction pathway for 1 O 2 production is PMS→OH*→O*→ ; M‐SACs exhibit moderate near‐average Gibbs free energies in each step have better activity, which key outstanding performance Fe‐SACs. This study gives atomic‐scale understanding fundamental mechanisms PMS‐assisted reactive oxygen species via M‐SACs, thus providing guidance developing organic pollutant degradation.

Язык: Английский

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A comprehensive review on the electrochemical parameters and recent material development of electrochemical water splitting electrocatalysts

RSC Advances, Год журнала: 2023, Номер 13(6), С. 3843 - 3876

Опубликована: Янв. 1, 2023

Electrochemical splitting of water is an appealing solution for energy storage and conversion to overcome the reliance on depleting fossil fuel reserves prevent severe deterioration global climate. Though there are several cells, hydrogen (H

Язык: Английский

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Electronic Modulation Caused by Interfacial Ni‐O‐M (M=Ru, Ir, Pd) Bonding for Accelerating Hydrogen Evolution Kinetics

Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(41), С. 22276 - 22282

Опубликована: Авг. 24, 2021

Abstract Designing definite metal‐support interfacial bond is an effective strategy for optimizing the intrinsic activity of noble metals, but rather challenging. Herein, a series quantum‐sized metal nanoparticles (NPs) anchored on nickel metal–organic framework nanohybrids (M@Ni‐MOF, M=Ru, Ir, Pd) are rationally developed through spontaneous redox strategy. The metal‐oxygen bonds between NPs and Ni‐MOF guarantee structural stability sufficient exposure surface active sites. More importantly, such precise feature can effectively modulate electronic structure hybrids charge transfer formed Ni‐O‐M bridge then improves reaction kinetics. As result, representative Ru@Ni‐MOF exhibits excellent hydrogen evolution (HER) at all pH values, even superior to commercial Pt/C recent noble‐metal catalysts. Theoretical calculations deepen mechanism understanding HER performance optimized adsorption free energies water due interfacial‐bond‐induced electron redistribution.

Язык: Английский

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Freestanding Metal–Organic Frameworks and Their Derivatives: An Emerging Platform for Electrochemical Energy Storage and Conversion

Chemical Reviews, Год журнала: 2022, Номер 122(11), С. 10087 - 10125

Опубликована: Апрель 21, 2022

Metal–organic frameworks (MOFs) have recently emerged as ideal electrode materials and precursors for electrochemical energy storage conversion (EESC) owing to their large specific surface areas, highly tunable porosities, abundant active sites, diversified choices of metal nodes organic linkers. Both MOF-based MOF-derived in powder form been widely investigated relation synthesis methods, structure morphology controls, performance advantages targeted applications. However, engage them applications, both binders additives would be required postprocessed electrodes, fundamentally eliminating some the sites thus degrading superior effects MOF-based/derived materials. The advancement freestanding electrodes provides a new promising platform EESC thanks apparent merits, including fast electron/charge transmission seamless contact between current collectors. Benefiting from synergistic effect structures materials, outstanding can achieved, stimulating increasing enthusiasm recent years. This review timely comprehensive overview on structural features fabrication techniques electrodes. Then, latest advances are summarized devices electrocatalysis. Finally, insights into currently faced challenges further perspectives these feasible solutions discussed, aiming at providing set guidance promote development scale-up production commercial

Язык: Английский

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Microenvironment Engineering of Single/Dual‐Atom Catalysts for Electrocatalytic Application

Advanced Materials, Год журнала: 2023, Номер 35(31)

Опубликована: Фев. 23, 2023

Single/dual-metal atoms supported on carbon matrix can be modulated by coordination structure and neighboring active sites. Precisely designing the geometric electronic uncovering structure-property relationships of single/dual-metal confront with grand challenges. Herein, this review summarizes latest progress in microenvironment engineering single/dual-atom sites via a comprehensive comparison single-atom catalyst (SACs) dual-atom catalysts (DACs) term design principles, modulation strategy, theoretical understanding structure-performance correlations. Subsequently, recent advances several typical electrocatalysis process are discussed to get general reaction mechanisms finely-tuned SACs DACs. Finally, full-scaled summaries challenges prospects given for This will provide new inspiration development atomically dispersed electrocatalytic application.

Язык: Английский

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Bioinspired Framework Catalysts: From Enzyme Immobilization to Biomimetic Catalysis

Chemical Reviews, Год журнала: 2023, Номер 123(9), С. 5347 - 5420

Опубликована: Апрель 12, 2023

Enzymatic catalysis has fueled considerable interest from chemists due to its high efficiency and selectivity. However, the structural complexity vulnerability hamper application potentials of enzymes. Driven by practical demand for chemical conversion, there is a long-sought quest bioinspired catalysts reproducing even surpassing functions natural As nanoporous materials with surface areas crystallinity, metal-organic frameworks (MOFs) represent an exquisite case how enzymes their active sites are integrated into porous solids, affording heterogeneous superior stability customizable structures. In this review, we comprehensively summarize advances MOFs catalysis, discuss design principle various MOF-based catalysts, such as MOF-enzyme composites embedded sites, explore utility these in different reactions. The advantages enzyme mimetics also highlighted, including confinement, templating effects, functionality, comparison homogeneous supramolecular catalysts. A perspective provided potential solutions addressing current challenges MOF catalysis.

Язык: Английский

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Micro/nano metal–organic frameworks meet energy chemistry: A review of materials synthesis and applications

eScience, Год журнала: 2023, Номер 3(2), С. 100092 - 100092

Опубликована: Янв. 10, 2023

Micro/nano metal–organic frameworks (MOFs) have attracted significant attention in recent years due to their numerous unique properties, with many synthetic methods and strategies being reported for constructing MOFs specific micro/nano structures. In addition, the design of energy storage conversion applications study structure–activity relationship also become research hotspots. Herein, a comprehensive overview progress on is presented. We begin brief introduction various synthesis controlling morphology MOFs. Subsequently, structure-dependent properties as electrode materials or catalysts terms batteries, supercapacitors, catalysis are discussed. Finally, remaining challenges future perspectives this field Overall, review expected inspire advanced efficient technologies.

Язык: Английский

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Methanol electroreforming coupled to green hydrogen production over bifunctional NiIr-based metal-organic framework nanosheet arrays

Applied Catalysis B Environment and Energy, Год журнала: 2021, Номер 300, С. 120753 - 120753

Опубликована: Сен. 27, 2021

Язык: Английский

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Biocatalytic and Antioxidant Nanostructures for ROS Scavenging and Biotherapeutics

Advanced Functional Materials, Год журнала: 2021, Номер 31(31)

Опубликована: Май 13, 2021

Abstract In human systems, reactive oxygen species (ROS) significantly affect different physiological activities and play critical roles in diverse living processes. It is widely known that excessive ROS generation inflammatory tissues can further deteriorate the localized tissue injury cause chronic diseases. Though promising for reducing levels, many antioxidant molecules natural enzymes suffer from abundant intrinsic limitations. Recently, a series of biocatalytic or nanostructures have been designed with distinctive scavenging capabilities, which show to overcome these kernel challenges. this timely review, most recent advances engineering are summarized. First, principles corresponding methods testing various enzymatic carefully concluded. Subsequently, rationally high efficiencies comprehensively discussed, especially on catalytic activities, mechanisms, structure‐function relationships. After that, representative applications biotherapeutics summarized detail. At last, primary challenges future perspectives emerging research frontier also outlined. believed progress review will offer cutting‐edge understanding guidance high‐performance broad biotherapeutic applications.

Язык: Английский

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