MOF‐Based Chemiresistive Gas Sensors: Toward New Functionalities

Advanced Materials, Journal Year: 2022, Volume and Issue: 35(43)

Published: Aug. 10, 2022

The sensing performances of gas sensors must be improved and diversified to enhance quality life by ensuring health, safety, convenience. Metal–organic frameworks (MOFs), which exhibit an extremely high surface area, abundant porosity, unique chemistry, provide a promising framework for facilitating gas-sensor innovations. Enhanced understanding conduction mechanisms MOFs has facilitated their use as gas-sensing materials, various types have been developed examining the compositional morphological dependences implementing catalyst incorporation light activation. Owing inherent separation absorption properties catalytic activity, are applied molecular sieves, absorptive filtering layers, heterogeneous catalysts. In addition, oxide- or carbon-based materials with complex structures composites can derived appropriate post-treatment MOFs. This review discusses effective techniques design optimal MOFs, in terms computational screening synthesis methods. Moreover, through distinctive functionalities heterostructures, derivatives incorporated applications presented.

Language: Английский

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Bottom-Up Synthesis of 8-Connected Three-Dimensional Covalent Organic Frameworks for Highly Efficient Ethylene/Ethane Separation

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(12), P. 5643 - 5652

Published: March 21, 2022

Developing cost-/energy-efficient separation techniques for purifying ethylene from an ethylene/ethane mixture is highly important but very challenging in the industrial process. Herein, using a bottom-up [8 + 2] construction approach, we rationally designed and synthesized three three-dimensional covalent organic frameworks (COFs) with 8-connected bcu networks, which can selectively remove ethane high efficiency. These COF materials, are fabricated by condensation reaction of customer-designed octatopic aldehyde monomer linear diamino linkers, possess crystallinity, good structural robustness, porosity. Attributed to well-organized micro-sized pores nonpolar/inert pore environment, these COFs display adsorption capacity selectivity over ethylene, making them among best ethane-selective adsorbents purification. Their excellent performance validated dynamic breakthrough experiments high-purity (>99.99%) produced through single The surpasses all reported C2H6-selective even some benchmark metal-organic frameworks. This work provides guidance design new value-added gas

Language: Английский

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Metal organic frameworks as hybrid porous materials for energy storage and conversion devices: A review

Coordination Chemistry Reviews, Journal Year: 2021, Volume and Issue: 446, P. 214115 - 214115

Published: July 15, 2021

Language: Английский

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Covalent‐Organic Frameworks (COFs) as Proton Conductors

Advanced Energy Materials, Journal Year: 2021, Volume and Issue: 11(39)

Published: Sept. 1, 2021

Abstract Proton conductivity is the paramount property of proton‐conducting materials that are playing significant roles in diverse electrochemical devices with applications proton exchange membranes (PEMs) for fuel cells (PEMFCs). Considering scarcity fossil fuels, development clean and green renewable energy resources in‐demand across globe. Toward this direction, solid‐state conductors interest. The higher structural tunability, lower density, good crystallinity, accessible well‐defined pores, excellent thermal chemical stability covalent‐organic frameworks (COFs) make them versatile platforms as both under hydrous anhydrous conditions. Taking advantage such superior properties, reports on COFs have been increasing swiftly since 2014, which demands a summarization comprehensive discussion “at glance” visualization further development. In review, showcased newer class material. A presented by organizing strategies taken to develop COFs. Establishment structure–function relationships implementation discussed well. Moreover, challenges future prospects elaborately critically analyzed.

Language: Английский

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Enhanced adsorption and visible-light photocatalytic degradation of toluene by CQDs/UiO-66 MOG with hierarchical pores

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 435, P. 135033 - 135033

Published: Feb. 4, 2022

Language: Английский

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Advances and Applications of Metal‐Organic Frameworks (MOFs) in Emerging Technologies: A Comprehensive Review

Global Challenges, Journal Year: 2023, Volume and Issue: 8(2)

Published: Dec. 30, 2023

Abstract Metal‐organic frameworks (MOFs) that are the wonder material of 21st century consist metal ions/clusters coordinated to organic ligands form one‐ or more‐dimensional porous structures with unprecedented chemical and structural tunability, exceptional thermal stability, ultrahigh porosity, a large surface area, making them an ideal candidate for numerous potential applications. In this work, recent progress in design synthetic approaches MOFs explore their applications fields gas storage separation, catalysis, magnetism, drug delivery, chemical/biosensing, supercapacitors, rechargeable batteries self‐powered wearable sensors based on piezoelectric triboelectric nanogenerators summarized. Lastly, work identifies present challenges outlines future opportunities field, which can provide valuable references.

Language: Английский

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Solid-State Proton Conduction Driven by Coordinated Water Molecules in Metal–Organic Frameworks and Coordination Polymers

ACS Energy Letters, Journal Year: 2022, Volume and Issue: 7(12), P. 4490 - 4500

Published: Nov. 15, 2022

As efficient alternative renewable energy resources, proton-exchange membrane fuel cells (PEMFCs) have received immense attention where proton-conducting materials act as PEMs for proton migration. The recent past has witnessed considerable progress in the use of metal–organic frameworks (MOFs) and coordination polymers (CPs) solid-state conductors (SSPCs) due to their structural superiority architectural diversity. In order impart conductivity, a variety intrinsic extrinsic sources been installed onto these frameworks; however, reports on conduction metal-coordinated water molecules solely by virtue enhanced acidity are largely unexplored. key examples driven coordinated discussed this Perspective present some unique features MOFs CPs SSPCs, displaying wide range conductivity. scope works with plausible design principles that urgently required be investigated is also highlighted.

Language: Английский

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Current and further trajectories in designing functional materials for solid oxide electrochemical cells: A review of other reviews

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 94, P. 302 - 331

Published: March 8, 2024

Language: Английский

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A review of the trends, evolution, and future research prospects of hydrogen fuel cells – A focus on vehicles

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 72, P. 918 - 939

Published: June 1, 2024

Language: Английский

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Noncentrosymmetric Lanthanide-Based MOF Materials Exhibiting Strong SHG Activity and NIR Luminescence of Er³⁺: Application in Nonlinear Optical Thermometry

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(2), P. 3244 - 3252

Published: Jan. 5, 2023

Optically active luminescent materials based on lanthanide ions attract significant attention due to their unique spectroscopic properties, nonlinear optical activity, and the possibility of application as contactless sensors. Lanthanide metal-organic frameworks (Ln-MOFs) that exhibit strong second-harmonic generation (SHG) are optically in NIR region unexpectedly underrepresented. Moreover, such Ln-MOFs require ligands chiral and/or need multistep synthetic procedures. Here, we show pulsed laser irradiation noncentrosymmetric, isostructural Ln-MOF (MOF-Er3+ (1) codoped MOF-Yb3+/Er3+ (2)) constructed from simple, achiral organic substrates a one-step procedure results tunable SHG activity. The signals could be easily collected, exciting broad spectral range, ≈800 1500 nm, resulting intense color emission, observed entire visible region. upon excitation range ≈900 1025 also luminescence Er3+ ions, centered at ≈1550 nm. use 975 nm pulse allows simultaneous observations conventional emission signal, altogether tuned by composition materials. Taking benefits different thermal responses mentioned effects, have developed thermometer lanthanide-MOF In this system, signal decreases with temperature, whereas band slightly broadens, allowing ratiometric (Er3+ 1550 nm/SHG 488 nm) temperature monitoring. Our study provides groundwork for rational design readily available self-monitoring NLO-active desired electronic properties.

Language: Английский

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