On‐Demand Removable Self‐Healing and pH‐Responsive Europium‐Releasing Adhesive Dressing Enables Inflammatory Microenvironment Modulation and Angiogenesis for Diabetic Wound Healing

Small, Год журнала: 2022, Номер 19(3)

Опубликована: Ноя. 1, 2022

Abstract Current diabetic wound treatments remain unsatisfactory due to the lack of a comprehensive strategy that can integrate strong applicability (tissue adhesiveness, shape adaptability, fast self‐healability, and facile dressing change) with initiation smooth connection cascade healing processes. Herein, benefiting from multifaceted bonding ability tannic acid metal ions various polymers, family tannin–europium coordination complex crosslinked citrate‐based mussel‐inspired bioadhesives (TE‐CMBAs) are specially developed for healing. TE‐CMBAs gel instantly (< 60 s), possess favorable shape‐adaptability, considerable mechanical strengths, high elasticity, wet tissue adhesiveness (≈40 kPa), photothermal antimicrobial activity, excellent anti‐oxidant biocompatibility, angiogenetic property. The reversible hydrogen bond crosslinking sensitive metal–phenolic also confers pH‐responsive europium ion TA releasing properties on‐demand removability upon mixing borax solution, enabling convenient painless change inflammatory microenvironment modulation, angiogenesis promotion, effective extracellular matrix production leveraging acidic pH condition wounds. This adhesive provides regenerative management be extended other complicated scenarios.

Язык: Английский

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Lignin‐Metal Supramolecular Framework Strategy of Self‐Healing Carbon‐Coated CoRu Alloy Nanocatalyst for Efficient Overall Water Splitting

Advanced Energy Materials, Год журнала: 2024, Номер 14(32)

Опубликована: Июнь 19, 2024

Abstract Common precursors for carbon materials typically include petroleum‐based polymers or MOF materials. However, these often encounter challenges such as metal aggregation, high cost, and metals leaching. In this work, a novel of approach lignin‐metal supramolecular framework complex (MSF@Lignin) is introduced. These complexes are formed through oxidative ammonolysis lignin (OAL) to synthesize nitrogen‐doped carbon‐encapsulated CoRu nanocatalyst (CoRu@OALC) via in situ carbonization. CoRu@OALC exhibited exceptional performance both HER (90 mV) OER (200 at the current density 10 mA cm −2 , with an overall water splitting voltage 1.5 V outstanding stability under density. During pyrolysis process, became encapsulated by lignin‐derived carbon, occurring within temperature range 600–700 °C. catalytic active sites primarily located defects showcasing unique “self‐healing” phenomenon layer. Oxygen‐containing intermediates ( * OH, O, OOH) facilitated reconstruction on layer, while hydrogen‐containing H) contributed reappearance defect‐rich structure.

Язык: Английский

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Wireless Gas Sensor Based on the Mesoporous ZnO–SnO₂ Heterostructure Enables Ultrasensitive and Rapid Detection of 3-Methylbutyraldehyde

ACS Sensors, Год журнала: 2024, Номер 9(5), С. 2585 - 2595

Опубликована: Апрель 20, 2024

Achieving ultrasensitive and rapid detection of 3-methylbutyraldehyde is crucial for monitoring chemical intermediate leakage in pharmaceutical industries as well diagnosing ventilator-associated pneumonia by exhaled gas. However, developing a sensitive method detecting poses challenges. Herein, wireless chemiresistive gas sensor based on mesoporous ZnO–SnO2 heterostructure fabricated to enable the first time. The exhibits uniform spherical shape (∼79 nm diameter), high specific surface area (54.8 m2 g–1), small crystal size (∼4 nm), large pore (6.7 nm). demonstrates response (18.98@20 ppm), short response/recovery times (13/13 s), low limit (0.48 ppm) toward 3-methylbutyraldehyde. Furthermore, real-time system developed utilizing microelectromechanical systems sensors. modification amorphous ZnO SnO2 wall can effectively increase chemisorbed oxygen content thickness electron depletion layer at gas–solid interface, which facilitates interface redox reaction enhances sensing performance. This work presents an initial example semiconductor metal oxide sensors efficient that holds great potential ensuring safety during production disease diagnosis.

Язык: Английский

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A Versatile Passivated Protein‐Adsorption Platform for Rapid Healing of Vascular Stents by Modulating the Microenvironment

Advanced Functional Materials, Год журнала: 2024, Номер 34(16)

Опубликована: Янв. 4, 2024

Abstract Biodegradable stents have paved the way to treat coronary artery disease. However, rapid reendothelialization is required solve problems of mismatched degradation rates, localized inflammation, and insufficient biocompatibility. Herein, a novel passivated protein‐adsorption coating synthesized by coordination chelation, oxidation, cross‐linking, polymerization, deposition dopamine, (‐)‐epigallocatechin gallate (EGCG), copper ions (Cu 2+ ) using two‐electron oxidation. This exhibits hierarchical functionality, that is, at macroscale, its superhydrophilicity conveys antifouling ability; whereas microscale, active groups (quinone‐, amino‐, hydroxyphenyl aromatic ring) facilitate protein adsorption. Antifouling ability prevents acute thrombosis inflammation maintains initial microenvironment stability post‐implantation. The gradual endothelial cells (ECs) adhesion. Meanwhile, decomposition nitric oxide (NO) donors release NO catalyzed Cu , EGCG alleviates or oxidative stress damage, inflammatory responses, formation, excessive smooth muscle proliferation in stent microenvironment. provides favorable conditions for healthy growth ECs. study proposes strategy neointima formation comprising ECs on surfaces biodegradable depositing (polydopamine/EGCG/Cu), opening new possibilities efficient treatment

Язык: Английский

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Recent advances in tannic acid-based gels: Design, properties, and applications

Advances in Colloid and Interface Science, Год журнала: 2025, Номер 339, С. 103425 - 103425

Опубликована: Фев. 15, 2025

Язык: Английский

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Synthesis of Mesoporous Ag₂O/SnO₂ Nanospheres for Selective Sensing of Formaldehyde at a Low Working Temperature

ACS Sensors, Год журнала: 2022, Номер 7(12), С. 3963 - 3972

Опубликована: Дек. 13, 2022

Formaldehyde (HCHO) is a prevalent indoor gas pollutant that has been seriously endangering human health. Developing semiconductor metal oxide (SMO) sensors for selective measurement of formaldehyde at low working temperatures remains great challenge. In this work, silver/tin–polyphenol hybrid spheres are applied as sacrificial template the fabrication spherical mesoporous Ag2O/SnO2 sensing materials. The obtained have uniform particle size (∼80 nm), large pore (5.8 and high specific surface area (71.3 m2 g–1). response 140 toward (10 ppm) temperature (75 °C). detection limit reaches level 23.6 ppb. Most importantly, it excellent selectivity interfering gases. When concentration (e.g., ethanol) 5 times formaldehyde, little affected. Theoretical calculations suggest addition Ag2O can significantly enhance adsorption energy thus improving performance. This work demonstrates an efficient self-template synthesis strategy noble catalyst-decorated spheres, which could boost performance lower temperature.

Язык: Английский

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Green tea polyphenols-derived hybrid materials in manufacturing, environment, food and healthcare

Nano Today, Год журнала: 2023, Номер 52, С. 101990 - 101990

Опубликована: Сен. 8, 2023

Язык: Английский

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Hollow multi-shelled NiO nanoreactor for nanoconfined catalytic degradation of organic pollutants via peroxydisulfate activation

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 325, С. 122359 - 122359

Опубликована: Янв. 4, 2023

Язык: Английский

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Synthesis of Mesoporous Lanthanum-Doped SnO₂ Spheres for Sensitive and Selective Detection of the Glutaraldehyde Disinfectant

ACS Sensors, Год журнала: 2023, Номер 8(10), С. 3723 - 3732

Опубликована: Авг. 23, 2023

Glutaraldehyde disinfectant has been widely applied in aquaculture, farming, and medical treatment. Excessive concentrations of glutaraldehyde the environment can lead to serious health hazards. Therefore, it is extremely important develop high-performance sensors with low cost, high sensitivity, rapid response, fabulous selectivity, limit detection. Herein, mesoporous lanthanum (La) doped SnO2 spheres specific surface area (52-59 m2 g-1), uniform mesopores (with a pore size concentrated at 5.7 nm), highly crystalline frameworks are designed fabricate sensitive gas toward gaseous glutaraldehyde. The lanthanum-doped exhibit excellent glutaraldehyde-sensing performance, including response (13.5@10 ppm), time (28 s), detection 0.16 ppm. sensing performance ascribed area, contents chemisorbed oxygen species, doping. DFT calculations suggest that doping lattice effectively improve adsorption energy compared pure materials. Moreover, fabricated detect commercial disinfectants, indicating potential application

Язык: Английский

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Chemistry of formation and elimination of formaldehyde in foods

Trends in Food Science & Technology, Год журнала: 2023, Номер 139, С. 104134 - 104134

Опубликована: Авг. 18, 2023

Язык: Английский

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