Formation and Chemical Structure of Carbon-13 Tracer Lignin-Carbohydrate Complexes (LCCs) During Kraft Pulping

Molecules, Journal Year: 2025, Volume and Issue: 30(5), P. 1077 - 1077

Published: Feb. 26, 2025

In this study, a modified synthetic method for labeling lignin dimer (guaiacylglycerol-β-guaiacyl ether-[α-13C]) was developed. The chemical structure of the target compound analyzed using 1H-NMR, 13C-NMR, and other analytical techniques. Then, 13C-labeled phenolic model subjected to kraft pulping in presence xylose. Finally, resulting reaction products were fractionated acid precipitation ethyl acetate extraction, each fraction by carbon-13 nuclear magnetic resonance (13C-NMR) two-dimensional heteronuclear multiple quantum coherence (HMQC) spectroscopy. This aimed investigate occurrence lignin-carbohydrate complexes (LCCs) during conventional process. Employing ethanol as medium facilitated bromination 4-acetylguaiacol-[α-13C], homogeneous significantly improving yield brominated product over 90%. Additionally, xylose led minor quantities benzyl ether-type complex (LCC) structures, which predominantly detected extractive.

Language: Английский

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Binding Sites of Automobile Exhaust Gases on Metal–Organic Frameworks: Advances and Perspectives

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Automobile exhaust gases are major contributors to air pollution, leading severe challenges in environmental protection and public health. Metal–organic frameworks (MOFs) have emerged as promising adsorbents selectively capture gaseous pollutants due their highly tunable structures, large surface areas, abundant binding sites. This review delves into the diverse sites within MOFs for selective adsorption separation of automobile state-of-the-art technologies situ structural characterization. The roles metal centers, organic linkers, pore environments determining efficiency selectivity systematically analyzed. work provides foundation insights design construction next-generation MOF-based solid sorbents, representing innovative solutions automotive emission control promoting more sustainable transportation systems.

Language: Английский

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MOF and COF platforms toward kidney-disease: Advanced nanovehicles for effective diagnosing and treatment

Microchemical Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113534 - 113534

Published: April 1, 2025

Language: Английский

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Drastic-yet-distinct alterations in rarefied gas transport of CO2 and propane in nanochannels by finely-tuning surface characteristics

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162957 - 162957

Published: April 1, 2025

Language: Английский

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Amine-functionalized ZIF-8@bamboo derived nitrogen doped carbonaceous: Characterization and for CO2 capture

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 106600 - 106600

Published: May 1, 2025

Language: Английский

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Construction of Zn-based metal–organic frameworks in bamboo by in-situ and ex-situ growth strategies for indoor environmental remediation

Industrial Crops and Products, Journal Year: 2025, Volume and Issue: 230, P. 121102 - 121102

Published: May 5, 2025

Language: Английский

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Separable Microneedle Patch Integrated with the Dictamnine-Loaded Copper MOF Nanozyme for Atopic Dermatitis Treatment

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Atopic dermatitis (AD) is a chronic inflammatory skin disorder marked by thickening, severe pruritus, lesions, and emotional disturbances, including anxiety depression-like behavior. Current treatments primarily rely on localized therapies, which can lead to adverse effects such as hyperglycemia Cushing's syndrome with repeated use. To address these issues, we developed hyaluronic acid-based separable microneedle patch (Dic@pCu-HA MN), integrating polydopamine-coordinated copper-based metal-organic frameworks (pCu-MOFs) the anti-inflammatory agent dictamnine (Dic), for synergistic management of AD its neuropsychiatric comorbidities. pCu-MOFs exhibited dual functionality nanocargo hydrophobic Dic (encapsulation efficiency: 84.62 ± 2.14%) multienzyme mimics that efficiently scavenge reactive oxygen species (ROS) (superoxide radical scavenging: 63.85 0.34%). In vitro release studies demonstrated ROS-responsive 86.80 4.83% over 48 h under pathology-mimicking conditions. 1-Chloro-2,4-dinitrochlorobenzene (DNCB)-induced mouse model, Dic@pCu-HA MN significantly reduced oxidative stress (8-OHdG: 85.1 7.0% decrease), suppressed pro-inflammatory cytokines (IL-4: 70.0 7.8% decrease vs control), restored barrier integrity. By modulating HPA axis, system attenuated neuroinflammation alleviated itching (scratching frequency: 40.1 41.3% reduction) behavior (time in bright box: 96.6 156.2% increase). This combined therapeutic approach not only offers comprehensive strategy but also provides potential benefits addressing disorders their sequelae.

Language: Английский

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Enhancing bamboo scrimber mechanical properties and mildew resistance through gamma irradiation crosslinking modification

Industrial Crops and Products, Journal Year: 2024, Volume and Issue: 222, P. 119910 - 119910

Published: Oct. 31, 2024

Language: Английский

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Recent Research Progress of Mofs-Based Heterostructures for Photocatalytic Hydrogen Evolution

Published: Jan. 1, 2024

Language: Английский

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