Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 18, 2024
As heterogeneous photocatalysts that can effectively transform CO
Language: Английский
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 12, 2025
Abstract Developing novel nanoplatforms capable of monitoring drug release by identifiable magnetic resonance imaging (MRI) responses is a great promising yet challenging task. Here, isoreticular chemistry strategy introduced to enable spn ‐type metal–organic framework (MOF) with T 1 ‐weighted MRI turned‐on response the via coordination‐dissociation process. Post‐synthetic functionalization endows structure high longitudinal relaxivity r 12.63 m −1 s as well abundant accessible coordination sites catch carboxylate probes and drugs. Mechanism studies reveal size‐dependent decrease in coordinated increase size, bulk benzoic acid showing largest reduction at 71%. In vitro model further validate signals respectively coordinating four drugs aromatic groups. Finally, vivo experiments confirm feasibility using this coordination‐dissociation‐induced monitor release. This proof‐of‐principle study demonstrates practical pathway for designing MOF‐based responsive MRI, paving way enhanced non‐invasive techniques.
Language: Английский
Citations
0
Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown
Published: March 12, 2025
Abstract The foremost cause of global warming in 21 st century is excessive generation CO 2 and its build‐up atmosphere. In mandate to address this important problem, many solutions are investigated, with conversion emerging as a key approach. This method produces clean, renewable energy while simultaneously lowering levels. order facilitate an investigation sophisticated multifunctional catalysts for conversion, study starts by looking at the primary sources their effects on environment. It explores importance development methods into value‐added products including methanol, ethanol, hydrocarbons. Specifically, utilization tailored carbon‐based, metal organic frameworks (MOF)‐based, Metal Oxide‐based, Zeolite‐based catalysts, composites across various such photocatalysis, electrocatalysis explored. attempts highlight difficulties possible future developments complexity topic. provides inclusive exploration facets highlighting significance novel catalyst application tactics halting warming.
Language: Английский
Citations
0
Academia green energy., Journal Year: 2025, Volume and Issue: 2(1)
Published: March 19, 2025
The increasing levels of carbon dioxide (CO2) in the atmosphere have driven global efforts to find sustainable and effective reduction technologies mitigate climate change. Among these, Metal–Organic Framework (MOF)-based catalysts emerged as a promising solution due their high surface area, tunable porosity, ability incorporate active metal sites. There is gap literature, specifically understanding advancement MOF-based these three technologies. objective this paper provide comprehensive review latest developments photocatalysis, electrocatalysis, photoelectrocatalysis for CO2 reduction. literature analysis findings showed that PC MIL-101(Cr)-Ag produced highest methane rate, Au10@ZIF-67 methanol while formic acid major product EC, especially by Zr-MOF catalysts, Ti/TiO2NT-ZIF-8 outstanding PEC performance. This highlights catalytic performance various MOF structures, focusing on influence synthesis methods, centers, operating conditions selectivity efficiency. While hold immense potential, challenges related stability, scalability, must be addressed industrial applications. Future research should focus optimizing systems enhanced durability, cost effectiveness, energy efficiency meet growing demand solutions.
Language: Английский
Citations
0
New Journal of Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
CuO–MoO 3 /TiO 2 NTs composite photoelectrodes, formed by constructing heterostructures on nanotube substrates, exhibit high selectivity in the CO reduction reaction and good photoelectrochemical performance.
Language: Английский
Citations
0
ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 2, 2025
Language: Английский
Citations
0
Small, Journal Year: 2025, Volume and Issue: unknown
Published: April 3, 2025
Iridium (Ir)-based materials are the most widely used oxygen evolution reaction (OER) electrocatalysts in proton exchange membrane water electrolysis (PEMWE). However, their commercial application suffers from high cost and insufficient activity. To optimize atom utilization efficiency of Ir, aim is to engineer develop a rutile-structured solid solution catalyst with minimal Ir content, which identified through phase boundary. Here, Ir0.10Mn0.90O2 represents lowest content desired IrO2-MnO2 solution. The exhibits outstanding OER performance acidic electrolytes, reaching remarkable mass activity 1135 A g-1 at an overpotential 300 mV, ≈50 times higher than that IrO2 catalyst. Additionally, it demonstrates excellent stability current density 200 mA cm-2 over 120 h during PEMWE operations. Density functional theory (DFT) calculations indicate hydroxylation process can be efficiently promoted by electron-withdrawing on sites Ir0.10Mn0.90O2, contributing enhancement
Language: Английский
Citations
0
ChemCatChem, Journal Year: 2025, Volume and Issue: unknown
Published: April 10, 2025
Abstract In the photocatalytic conversion of water, carbon dioxide, and small‐molecule organics into clean energy sources and/or value‐added products, direct or indirect utilization metal‐organic framework (MOF) has gained significant attention because its versatile use. The reaction flask uses either MOF directly a MOF‐derived catalyst. both cases, role ligand is noteworthy. When used, more defined functions with several chemical supramolecular interactions, conversely, sacrificial when materials are developed. Both aspects were critically assessed covered categorically suitable examples, research gap was identified. current review offers (i) fundamental idea charge transfer phenomena irrespective nature reactions, (ii) multi‐body (iii) synthetic origin structural properties that only associated linkers do not aim to discuss catalytic activity metric, metal nodes, hypothesis MOF.
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 21, 2025
Abstract Composite structures created from metal‒organic framework (MOF) matrices are reviewed in this work. Depending on the nature of second component apart MOF platform, several synergistic properties may arise; at same time, initial features single constituent materials usually maintained, and individual shortcomings mitigated. Currently, timely energy environmental challenges necessitate quest for more advanced technologies. Significant developments MOF‐nanocomposites have enabled their application across a wide range modern traditional fields. This review demonstrates an exhaustive critical way broad MOF‐based nanocomposites, namely, MOF/perovskite nanoparticles (NPs), MOF/metal (non‐iron) oxide NPs, MOF/Fe 3 O 4 chalcogenide MOF/carbon‐based materials, as well nanocomposites MOFs with other semiconductor NPs. Key points related to synthesis, characterization, applications these provided. configuration, composites under discussion can be applied domains such photoelectrochemical sensing, antibiotic/dye degradation, optoelectronics, photovoltaics, catalysis, solar cells, supercapacitors, batteries, water remediation, drug loading. Sometimes, undergo certain processes (e.g. pyrolysis) act precursors composite appealing characteristics. Therefore, special section manuscript is devoted MOF‐derived NP composites. Toward end text, we conclude while also describing possibilities further investigations umbrella material categories analyzed herein. Despite progress achieved, key questions remain answered regarding relationships among morphology, properties, polyvalent activity materials. The present work aims shed light most aspects innovative prospects, facilitating deeper comprehension underlying phenomena, functionality, mechanistic insights governing behavior.
Language: Английский
Citations
0
Advanced Science, Journal Year: 2025, Volume and Issue: unknown
Published: May 8, 2025
Abstract Current heterojunction semiconduction assemblies, including type I, II, Z‐Scheme, and S‐Scheme constructures, enable the utilization of longer‐wavelength sunlight for photocatalytic conversions. However, such benefits are often achieved at expense either redox potentials conduction valence bands or quantum yield due to additional electron–hole recombination across interface. Herein, an atypical II constituted Au/TiO 2 /MFU‐4l is reported that demonstrates outstanding catalytic performance in reduction carbon dioxide (CO ) ethylene (C H 4 through tuning up‐converting holes MFU‐4l component raised from full‐spectrum solar irradiation. Anchored edge cube with a TiO cover layer, aurum ions (Au + )supported by (Au) nanoparticles enables reverse hole‐transfer event leveraging Ti‐O −• ‐Au +/0 ‐ •− O‐Zn potential, which significantly accelerates hole‐dominated oxidative desaturation C‐C intermediates CO into C═C bond products. The catalyst efficiently converts C more than 90% selectivity 107.0 µmol g −1 h under simulated sunlight. Electron paramagnetic resonance (EPR) experiments directly observe formed visible‐light excited moiety fused component's holes, thereby generating hydroxyl radicals (•OH) alone ultraviolet (UV) light same intensity.
Language: Английский
Citations
0
Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(47)
Published: Aug. 12, 2024
Abstract Efficient photocatalytic CO 2 reduction coupled with the photosynthesis of pure H O is a challenging and significant task. Herein, using classical photoreduction site iron porphyrinate as linker, Ag(I) clusters were spatially separated evenly distributed within new metal–organic framework (MOF), namely Ag 27 TPyP‐Fe . With water electron donors, exhibited remarkable performances in artificial photosynthetic overall reaction yield 36.5 μmol g −1 h ca 100 % selectivity, well evolution rate 35.9 Since liquid phase can be more readily from gaseous products photoreduction, high‐purity concentration up to 0.1 mM was obtained. Confirmed by theoretical calculations established energy level diagram, reductive iron(II) porphyrinates oxidative an integrated functioned synergistically achieve photosynthesis. Furthermore, photoluminescence spectroscopy photoelectrochemical measurements revealed that robust connection ligands facilitated efficient charge separation rapid transfer, thereby enhancing activity.
Language: Английский
Citations
2