Recent Advancements in Electrochemical Sensors Based on MOFs and Their Derivatives

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 15, 2024

Metal-organic frameworks (MOFs) are composed of metal nodes and organic linkers that can self-assemble into an infinite network. The high porosity large surface area MOFs facilitate the effective enrichment mass transfer analytes, which enhance signal response improve sensitivity electrochemical sensors. Additionally, their derivatives possess properties unsaturated sites tunable structures, collectively demonstrating potential for sensing. This paper summarizes preparation methods, structural properties, applications in sensing, emphasizing sensors' selectivity from perspectives direct indirect detection. it also explores future directions prospects with aim overcoming current limitations through innovative approaches.

Language: Английский

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Photocatalytic degradation of Pyrene and derivatives by Ag3PO4/BiOBr supported on Ni foam

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 131730 - 131730

Published: Jan. 1, 2025

Language: Английский

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Fabrication of TiO₂/MOF Type II Heterojunction by Growth of TiO₂ on Cr-Based MOF for Enhanced Photocatalytic Hydrogen Production

Crystal Growth & Design, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

MOF-based heterojunctions can significantly enhance the efficiency of photocatalytic hydrogen production; however, construction efficient remains a formidable challenge. In this study, we successfully developed series Type II by growing TiO2 on Cr-based MOF, thereby regulating generation, separation, and transportation photogenerated charge carriers to improve evolution performance. Among these, 23%TiO2/MIL-101(Cr) photocatalyst exhibited highest production activity, achieving 884.01 μmol g–1 in just 5 h, which is 6.8 6.0 times that pure MIL-101(Cr) TiO2, respectively. Additionally, demonstrated excellent cyclic stability. Tiny particles were proven mainly deposited surface N2 sorption isotherm analyses, transmission electron microscopy (TEM), high-resolution TEM, high-angle annular dark field scanning microscopy, etc. Characterization techniques such as situ XPS confirmed formation TiO2/MIL-101(Cr) heterostructure. Band structure analysis indicates meets thermodynamic requirements for production. Furthermore, transient photocurrent measurements, electrochemical impedance analysis, photoluminescence reveal possesses superior capabilities carrier transport, resulting from kinetic perspective. This research offers valuable insights into preparation development photocatalysts

Language: Английский

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Reticular Materials for Photocatalysis

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 27, 2024

Abstract Photocatalysis leverages solar energy to overcome the thermodynamic barrier, enabling efficient chemical reactions under mild conditions. It can greatly reduce reliance on traditional sources and has attracted significant research interest. Reticular materials, including metal‐organic frameworks (MOFs) covalent organic (COFs), represent a class of crystalline materials constructed from molecular building blocks linked by coordination bonds, respectively. function as heterogeneous catalysts, combining well‐defined structures high tailorability akin homogeneous catalysts. In this review, regulation light absorption, charge separation, surface in photocatalytic process through precise molecular‐level design based features reticular is elaborated. Notably, for MOFsmicroenvironment modulation around catalytic sites affects performance delved, with emphasis their unique dynamic flexible microenvironments. For COFs, inherent excitonic effects due fully nature discussed highlight strategies regulate charge‐ and/or energy‐transfer‐mediated photocatalysis. Finally, current challenges future directions field, aiming provide comprehensive understanding how be optimized enhanced photocatalysis discussed.

Language: Английский

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Photogenerated charge carriers in photocatalytic materials for solar hydrogen evolution

Current Opinion in Chemical Engineering, Journal Year: 2025, Volume and Issue: 47, P. 101087 - 101087

Published: Jan. 21, 2025

Language: Английский

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Boosting charge carrier separation by constructing a multivalent TiO2@Cu3(BTC)2 heterojunction photocatalyst toward enhanced photocatalytic hydrogen production

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162646 - 162646

Published: Feb. 1, 2025

Language: Английский

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N-Doped Carbon Layer Encapsulated NiP_x for Photocatalytic Alcohol Oxidation Coupled Hydrogen Evolution on Ag–In–Zn–S Quantum Dots

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

The photocatalytic oxidation of alcohols to value-added chemicals with simultaneous hydrogen (H2) generation is a promising sustainable process that suffers from slow charge transfer and poor integration both reactions. Here, an NH2-containing Ni metal-organic framework (MOF) used as precursor for creating N-doped C layer encapsulated nickel phosphide (NiPx@NC), which effectively enhances the reaction coupling when modified on narrow-band-gap Ag-In-Zn-S quantum dots (AIZS QDs). resulting AIZS/NiPx@NC photocatalysts demonstrate high efficiency benzyl alcohol (BA) coupled H2 evolution, achieving H2/benzaldehyde production rates 9.66/5.67 mmol g-1 h-1, are 3.30 47.25 times higher than those pure AIZS QDs, respectively. Additionally, selectivity benzaldehyde enhanced 77.96%. also shows improved performance other organics, including 4-methoxybenzyl biomass-derived furfuryl alcohol. Photoelectrochemical transient photovoltage spectroscopy tests confirm increased effective surface charges efficiency, while electron paramagnetic resonance reveals carbon-centered radical pathway selective formation. DFT calculations suggest carbon proton adsorption sites BA NiPx@NC surface. This work highlights potential multifunction in developing carbon-based cocatalysts evolution.

Language: Английский

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MOF-on-MOF Growth: Inducing Naturally Nonpreferred MOFs and Atypical MOF Growth

Accounts of Chemical Research, Journal Year: 2024, Volume and Issue: 57(21), P. 3113 - 3125

Published: Oct. 10, 2024

ConspectusOverflowing metal–organic frameworks (MOFs) have been synthesized from a wide range of metal and organic components for specific purposes intellectual curiosity. Each MOF has unique chemical structural characteristics directed by the incorporated components, ions (or clusters), linkers, their intrinsic coordination interactions. These are two pivotal factors influencing MOFs' fundamental properties subsequent applications. Therefore, selecting appropriate considering innate properties, is crucial to endow final MOFs with desired properties. Ultimately, producing structure using ideal best approach achieving tailored However, intended chosen remains underdeveloped. In many cases, resulting governed thermodynamically and/or kinetically preferred configuration (refers naturally structure) given reaction conditions. Additionally, hybrid complex structures, morphologies presents great opportunity obtain special advanced functions. this Account, we outline our group's efforts over past few years develop nonpreferred through induced MOF-on-MOF growth process atypical via nonstandard growth. First, highlight prime strategy based on template-induced section, discuss basic behaviors, isotropic anisotropic MOFs, determined degree matching between cell lattices MOFs. Second, introduce farming concept productive cultivation effective harvesting made Here importance template developing an efficient method cultivated Next, describe growths mismatched lattices. tip-to-middle involving self-structural adjustment secondary MOF, logical inference unidentified structures behavior morphological features, accompanied etching transformation template. Finally, perspectives challenges synthesis We hope that Account offers valuable insights into rational design development compositional characteristics, leading creation

Language: Английский

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Advanced Solid Lubrication with COK‐47: Mechanistic Insights on the Role of Water and Performance Evaluation

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Metal-organic framework (MOF) nanoparticles have attracted widespread attention as lubrication additives due to their tunable structures and surface effects. However, solid properties been rarely explored. This work introduces the positive role of moisture in case a newly described Ti-based MOF (COK-47) powder. COK-47 achieves an 8.5-fold friction reduction compared AISI 304 steel-on-steel sliding under room air. In addition, maintains similarly low coefficient (0.1-0.2) on various counterbodies, including Al2O3, ZrO2, SiC, Si3N4. Notably, other widely studied MOFs (ZIF-8, ZIF-67) 2D materials powder (MXene, TMD, rGO), exhibits lowest (≈0.1) same experimental settings. Raman spectroscopy, X-ray diffraction, photoelectron energy dispersive scanning electron microscope, transmission microscopy indicate that tribofilm is amorphous film obtained by hydrolysis air with moisture. Density functional theory further confirms water catalyzes decomposition COK-47, crucial step forming tribofilm. study demonstrates idea utilizing water-assisted mechanisms. It provides new insights into applications tribology highlights interdisciplinary contributions mechanical engineering chemistry.

Language: Английский

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Time‐Resolved Control of MOF‐Nanoparticle Heterojunctions for Crystal Composites with Tailorable Photocatalytic Performance

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Abstract The structural and compositional diversification of Metal‐Organic Frameworks (MOFs) continues to grow, along with the opportunities they offer in H₂ photoevolution or CO₂ photoreduction. This often requires use metal co‐catalysts for improving efficiency selectivity reaction. However, most studies overlook how integration these two components can be used tailor photocatalytic performance a given framework. Taking advantage new synthetic methodology that allows growth titanium‐based MUV‐10 crystals through continuous injection its components, here it is demonstrated time‐resolved Pt nanoparticles (NPs) at different stages crystal results tunable MOF/Pt heterojunctions varying efficiencies, which boost by up 2.5 times depending on time.

Language: Английский

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