Publications by authors named "Elı Sanchez-Gonzalez"
Article Synopsis
- Continuous emission of harmful gases is detrimental to the environment, air quality, and public health, prompting the need for materials that can capture and deactivate these gases.
- The study introduces a breakthrough in porous materials, showing how varying counterions in PdL Metal-Organic Cages allows for switching between physisorption and chemisorption of sulfur oxides (SO), achieving reversible adsorption and high selectivity.
- Notably, a nitrate derivative of PdL can capture significant amounts of SO, efficiently convert it to a less harmful form, and be regenerated under humid conditions, paving the way for advanced applications in gas contamination management.
The archetypical metal-organic framework (MOF), HKUST-1, has been systematically modified in both its organic and inorganic building blocks to introduce diversity in the metal centers and create defects within the network, achieving a variety of bimetallic hierarchical structures. These modifications changed the affinity of the MOFs for acid gases. The introduction of bimetallic sites mostly affects CO adsorption, while the hierarchical structure generates an increase in SO uptake capacity, allowing better performance in the separation of binary mixtures of these gases near room temperature.
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- The study highlights the first experimental use of covalent organic frameworks (COFs) for detecting sulfur dioxide (SO2), showcasing SonoCOF-9 as a promising material.
- SonoCOF-9 achieved a reversible SO2 sorption capacity of 3.5 mmol g-1 at 1 bar and 298 K, with good performance over multiple cycles.
- The research combines experimental findings with molecular simulations, indicating that SonoCOF-9 interacts strongly with SO2, making it suitable for detecting low concentrations of the gas (as low as 0.0064 ppm).
Article Synopsis
- SO emissions impact local air quality and contribute to broader environmental challenges, highlighting the need for effective solutions.
- Carbon microfibers (CMFs) are evaluated for their ability to adsorb and desorb SO, showing a substantial uptake capacity of 5 mmol/g.
- The study demonstrates CMFs' efficiency with fast kinetics, good selectivity for SO over CO, and consistent performance across ten adsorption cycles at room temperature.
Article Synopsis
- Excellent SO (sulfur oxides) capture by porous materials is emphasized, highlighting the importance of achieving uptake rates above 17 mmol g.
- The study focuses on a family of Al(III)-MOFs (Metal-Organic Frameworks) that resemble the MIL-53 structure and explores their SO adsorption behavior at low pressures.
- Results show an inversely proportional relationship between pore size and SO uptake, where larger channel pores lead to decreased SO capture, and this trend is further supported by both experimental and computational findings.
Article Synopsis
- The study explores a new method for controlled delivery of nitric oxide (NO) using metal-organic polyhedra (MOPs) to treat various diseases.
- The researchers utilize dirhodium paddlewheel complex-based MOPs (RhMOP) that allow NO to attach to specific sites, enhancing the control over its release.
- The release of NO from the created amorphous coordination polymer particles (CPPs) can be triggered by light and humidity, with factors like ligand coordination and particle size improving the efficacy of NO delivery.
Article Synopsis
- This text reviews the development and applications of MFM-300(Sc), a versatile metal-organic framework (MOF) that has gained traction since its initial introduction.
- It specifically emphasizes the material's capabilities in adsorbing gases, particularly acidic and corrosive types, and its catalytic properties due to its unique Sc-O bond character.
- Additionally, the review explores new research opportunities, including areas like host-guest chemistry and biomedical applications, showcasing the material's potential for future use.
Article Synopsis
- The MOF-type Ni(dobpdc) exhibits high stability and capacity for sulfur dioxide (SO) capture, achieving 4.3 mmol/g at low pressure (0.05 bar) and room temperature (298 K).
- It demonstrates excellent cycling performance, indicating durability over repeated use.
- Fluorescence and time-resolved photoluminescence experiments reveal its effective SO detection capabilities and suggest a possible mechanism for this detection.
Article Synopsis
- Researchers developed easy, HF-free methods to create flexible porous coordination polymers (PCPs) like MIL-53(Cr) and its new variants MIL-53(Cr)-Br and MIL-53(Cr)-NO.
- All three PCPs effectively absorb SO at room temperature and maintain their chemical stability in both dry and wet conditions.
- MIL-53(Cr)-Br displayed significant changes in light emission when exposed to SO, suggesting its potential use in sensing technologies.
Article Synopsis
- * A major challenge in using AuNPs is enhancing their sensitivity and selectivity for better sensing methods and multifunctional platforms for drug or gene delivery.
- * The review focuses on recent advancements in AuNPs within the field of biomedicine, emphasizing their roles as biosensors and targeted delivery systems.
Article Synopsis
- - The novel metal-organic framework (MOF) CUK-1, made using Mn(II) and water, effectively captures polar gases like hydrogen oxide (HO), sulfur oxide (SO), and hydrogen sulfide (HS), showcasing its environmentally friendly design.
- - Unlike earlier versions with Co(II) and Mg(II), Mn-CUK-1 exhibits unique temperature-induced structural flexibility due to the twisting of organic linkers, as revealed through single-crystal X-ray diffraction studies.
- - This MOF stands out for having the highest capacity-to-surface area ratio for hydrogen sulfide (HS) among stable MOFs and maintains structural integrity in humid or corrosive conditions, demonstrating versatile behavior based on temperature and the
Article Synopsis
- Metal-organic polyhedra (MOPs) can be linked to create porous soft materials that are both processable and permanently porous, but controlling their porosity remains a challenge due to random arrangements in networks.
- * Researchers developed a method to create linked MOP gels with adjustable porosity by introducing negative charges on MOP surfaces, leading to electrostatic repulsion that stabilizes the structures.
- * The study used a rhodium-based MOP (OHRhMOP) with hydroxyl groups that can be modified for controlled interactions with linkers, producing gels with varied porosities when heated.
Article Synopsis
- - There is increasing interest in metal-organic cages (MOCs) as porous materials due to their ability to be processed in solution, which makes them versatile for various applications.
- - The unique molecular structure and surface characteristics of MOCs influence how they interact with each other, allowing researchers to fine-tune the physical properties of the resulting materials.
- - The review emphasizes the potential of surface functionalization of MOCs to create different states of porous materials, and it highlights future opportunities for developing complex materials across multiple length scales.
Article Synopsis
- Researchers investigated two metal-organic frameworks, MIL-53(Al)-TDC and MIL-53(Al)-BDC, for their ability to adsorb sulfur oxides (SO).
- MIL-53(Al)-TDC showed rigidity during SO adsorption, while MIL-53(Al)-BDC displayed flexibility with multiple pore sizes allowing for different adsorption phases.
- Both frameworks demonstrated excellent performance for SO capture, even in humid conditions, suggesting their potential use in SO sensing and storage/transportation applications.
Article Synopsis
- Research on CAU-10 reveals efficient adsorption of sulfur dioxide (SO) using both experimental and computational methods.
- The study identifies that van der Waals interactions play a crucial role in the adsorption process.
- Findings suggest that CAU-10 is a highly effective material for capturing sulfur dioxide.
Article Synopsis
- The study focused on how the structure of Mg-CUK-1 changes when water (HO) molecules are added, examining the material at various levels of moisture.
- Using Powder X-ray diffraction (PXRD), the researchers measured how the dimensions of the Mg-CUK-1 material changed as more HO was loaded, applying a specific refinement technique to analyze the data.
- They discovered that when one water molecule is trapped in the structure (at around 18% humidity), it creates a bottleneck effect that enhances the material's ability to capture carbon dioxide (CO).
Article Synopsis
- * Chemisorbed sulfur species in MFM-300(Sc) were found to be low-order polysulfides.
- * The similar framework MFM-300(In) facilitates the creation of various polysulfide species, which could lead to innovative uses of MOFs in lithium/sulfur battery technologies.
Article Synopsis
- A new composite material, SWCNT@HKUST-1, was created using single-walled carbon nanotubes (SWCNTs) as templates, leading to the growth of HKUST-1 crystals on their surfaces.
- This composite exhibited improved nitrogen (N) adsorption properties, resulting in increased surface area and pore volume, which enhanced carbon monoxide (CO) capture from 7.92 to 8.75 mmol/g.
- Additionally, the heat of CO adsorption also increased, indicating stronger interactions, while in situ Raman experiments confirmed enhanced hydrophobicity due to the incorporation of carbon nanotubes.
Article Synopsis
- The MOF-type MIL-53(Al)-TDC is highly effective for capturing hydrogen sulfide (H2S).
- It shows exceptional hydrogen sulfide uptake at room temperature.
- The material also boasts excellent cycling capability and can be regenerated at low temperatures.
Article Synopsis
- Kinetic measurements show that Mg-CUK-1, a water-stable metal-organic framework, significantly enhances its CO2 capture ability from 4.6 wt% to 8.5 wt% at 18% humidity.
- Thermodynamic experiments and simulations back up the findings, indicating that increased humidity helps the material absorb more CO2.
- Molecular simulations reveal that the increased CO2 adsorption is due to favorable interactions between water and CO2 molecules, which improves their retention within the pores of the framework.
Article Synopsis
- - The study examined how ethanol (EtOH) interacts with a specific material called MIL-53(Al)-TDC, revealing a strong attraction (ΔHads = 69.6 kJ mol-1).
- - Adding small amounts of water (H2O) increased CO2 capture efficiency, while adding ethanol did not show any improvement.
- - Computational analyses, including the quantum theory of atoms in molecules (QTAIM), indicated a covalent bond between the MOF and the confined molecules, with no significant differences in hydrogen bonding when comparing confined molecules with CO2.
Article Synopsis
- A new, environmentally friendly method was developed to synthesize Cu-MOF-74 using only methanol as a solvent at room temperature.
- The resulting material was fully characterized, demonstrating its purity and nanocrystalline structure.
- The activated Cu-MOF-74 showed potential for catalyzing the conversion of trans-ferulic acid to vanillin, achieving a 71% yield and 97% selectivity, with a proposed reaction mechanism supported by quantum chemical calculations.
Article Synopsis
- - The CO capture capabilities of InOF-1 were enhanced by incorporating small amounts of methanol (MeOH) within its micropores, leading to a new variant called MeOH@InOF-1.
- - Compared to the fully activated version, MeOH@InOF-1 demonstrated significantly improved CO capture, with 1.30 times more efficiency in kinetic tests and 4.88 times in static tests.
- - Advanced simulations indicated that the enhancement in CO capture is due to the increased confinement of CO molecules near methanol, which interacts strongly with specific adsorption sites in the material.
Article Synopsis
- - The study examined how well the Cu-based metal-organic framework HKUST-1 maintains its crystal structure when exposed to water and ethanol, using vapor sorption tests to measure stability over time.
- - While the framework's ability to absorb ethanol remained consistent, its capacity to absorb water decreased as the experiment progressed.
- - It was found that HKUST-1 shows greater stability against ethanol compared to water, and pre-adsorbing a small amount of ethanol improved carbon monoxide capture without damaging the structure.
Article Synopsis
- The text discusses the discovery of a molecular rotor with exceptional sorption abilities despite lacking permanent voids in its crystal structure.
- Key findings indicate that the presence of benzene molecules in its crystal lattice acts as a rotation stopper, impacting dynamic behavior and molecular movement.
- The molecular rotor exhibited high uptake for carbon monoxide and acetone due to a combination of restricted rotation at low temperatures and the structural flexibility of its molecular axle.