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Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense SCIE
期刊论文 | 2025 , 21 (12) | SMALL
Abstract&Keyword Cite Version(3)

Abstract :

The persistent threats posed by toxic chemical warfare agents (CWAs) such as mustard gas (bis(2-chloroethyl) sulfide, HD) and bacterial contaminants demand the development of innovative, sustainable mitigation strategies. Photocatalytic processes that generate reactive oxygen species (ROS) offer a promising dual-functional approach for both chemical detoxification and antibacterial defense. In this study, two structurally analogous covalent organic frameworks (COFs), BPY-COF and BD-COF, are synthesized using benzotrithiophene as the donor unit paired with bipyridine and biphenyl, respectively. These COFs exhibit high crystallinity, broad-spectrum light absorption, and efficient charge carrier transport, with BPY-COF demonstrating superior performance due to the incorporation of heteroatoms. BPY-COF achieved ultrafast detoxification of the mustard gas simulant 2-chloroethyl ethyl sulfide (CEES) with a half-life of 35 min and 100% selectivity for 2-chloroethyl sulfoxide (CEESO) under white LED light, outperforming BD-COF. Additionally, electrospun composite fibers containing 40 wt.% BPY-COF maintained comparable CEES degradation rates and exhibited over 99% antibacterial efficiency against Escherichia coli and Bacillus subtilis within 60 min. These findings highlight the potential of BPY-COF as a multifunctional photocatalyst for integrated applications in chemical detoxification and antibacterial defense, addressing critical challenges in public health and safety.

Keyword :

antibacterial antibacterial charge transfer charge transfer covalent organic frameworks covalent organic frameworks photocatalytic degradation photocatalytic degradation

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GB/T 7714 Zhu, Yongchao , Qin, Liyang , Yang, Mingyuan et al. Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense [J]. | SMALL , 2025 , 21 (12) .
MLA Zhu, Yongchao et al. "Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense" . | SMALL 21 . 12 (2025) .
APA Zhu, Yongchao , Qin, Liyang , Yang, Mingyuan , Shi, Zhicheng , Chen, Hongxuan , Wen, Na et al. Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense . | SMALL , 2025 , 21 (12) .
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Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense EI
期刊论文 | 2025 , 21 (12) | Small
Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense Scopus
期刊论文 | 2025 , 21 (12) | Small
Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense Scopus
期刊论文 | 2025 | Small
Dual-functional acridine-based coatings with anti-bacterial adhesion and durable photocatalytic antibacterial SCIE
期刊论文 | 2024 , 194 | PROGRESS IN ORGANIC COATINGS
WoS CC Cited Count: 6
Abstract&Keyword Cite Version(2)

Abstract :

Bacterial infections are a major public health challenge around the world. The development of novel surface coatings that effectively inhibit bacterial adhesion, proliferation and growth is a critical step in addressing this global challenge. Photocatalytic antibacterial therapy has proven to be an effective approach and has received increasing attention. However, it is still a challenge to obtain coatings with both antibacterial adhesion and durable photocatalytic antibacterial functions. Herein, an acridine-based coating with antibacterial adhesion and photocatalytic antibacterial properties was prepared by simple methods (i.e., spin-coating, spray-coating, and drop-coating) and can be applied to various substrates. The bacterial anti-adhesion test results showed that the coating could effectively prevents the adhesion of Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), and Pseudomonas aeruginosa (P. aeruginosa), indicating the strong anti-fouling capability. The acridine-based coating demonstrated durable photocatalytic antimicrobial activity, remaining 99.3 % antibacterial effective against all three bacterial strains even after 30 days exposed to visible light. The coating can significantly reduce or eliminate the risk of contamination and cross-contamination, making it ideal for use in public healthcare environments.

Keyword :

Antibacterial Antibacterial Anti-fouling Anti-fouling Coating Coating Photocatalytic Photocatalytic

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GB/T 7714 Kang, Linfeng , Peng, Houqian , Yang, Mingyuan et al. Dual-functional acridine-based coatings with anti-bacterial adhesion and durable photocatalytic antibacterial [J]. | PROGRESS IN ORGANIC COATINGS , 2024 , 194 .
MLA Kang, Linfeng et al. "Dual-functional acridine-based coatings with anti-bacterial adhesion and durable photocatalytic antibacterial" . | PROGRESS IN ORGANIC COATINGS 194 (2024) .
APA Kang, Linfeng , Peng, Houqian , Yang, Mingyuan , Hu, Ke , Lin, Yihui , Zhu, Yongchao et al. Dual-functional acridine-based coatings with anti-bacterial adhesion and durable photocatalytic antibacterial . | PROGRESS IN ORGANIC COATINGS , 2024 , 194 .
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Dual-functional acridine-based coatings with anti-bacterial adhesion and durable photocatalytic antibacterial EI
期刊论文 | 2024 , 194 | Progress in Organic Coatings
Dual-functional acridine-based coatings with anti-bacterial adhesion and durable photocatalytic antibacterial Scopus
期刊论文 | 2024 , 194 | Progress in Organic Coatings
An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction SCIE
期刊论文 | 2024 , 16 (22) | CHEMCATCHEM
WoS CC Cited Count: 1
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Abstract :

Converting clean solar energy into chemical energy through artificial photosynthesis is an effective solution to solve the energy and environmental issues. Here, we report a Cs3Bi2Br9/Bi2WO6 (CBB/BWO) Z-scheme heterojunction constructed via electrostatic self-assembly, which facilitates efficient separation of photogenerated carriers and ensures the corresponding redox capacity of both components. By sharing Bi atoms, a Br-Bi-O bond is established between CBB and BWO, serving as an "electron bridge". The electrons generated by BWO are efficiently channeled to CBB through the heterojunction-formed "electron bridge", thereby achieving effective photocatalytic CO2 reduction. Under simulated sunlight conditions, it exhibits the highest CO yield of 72.52 mu mol g(-1) (without the addition of any precious metal, photosensitizers or sacrifices), which is approximately 7-fold and 18-fold greater than that of pure CBB and BWO, respectively. This work provides a more profound comprehension of the regulation of electron transfer through interfacial chemical bonds, thereby proposing a promising strategy for the development of efficient heterojunction photocatalysts for CO2 photoreduction.

Keyword :

Bi2WO6 Bi2WO6 CO2 reduction CO2 reduction Perovskite Perovskite Photocatalysis Photocatalysis Z-scheme Z-scheme

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GB/T 7714 Liu, Haolan , Sun, Jingjing , Lin, Qianying et al. An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction [J]. | CHEMCATCHEM , 2024 , 16 (22) .
MLA Liu, Haolan et al. "An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction" . | CHEMCATCHEM 16 . 22 (2024) .
APA Liu, Haolan , Sun, Jingjing , Lin, Qianying , Wang, Ying , Wang, Shuo , Wang, Shuowen et al. An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction . | CHEMCATCHEM , 2024 , 16 (22) .
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An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction Scopus
期刊论文 | 2024 , 16 (22) | ChemCatChem
An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction EI
期刊论文 | 2024 , 16 (22) | ChemCatChem
Highly selective photocatalytic reduction of CO2 to CH4 on electron-rich Fe species cocatalyst under visible light irradiation SCIE CSCD
期刊论文 | 2024 , 6 (1) | CARBON ENERGY
WoS CC Cited Count: 26
Abstract&Keyword Cite Version(2)

Abstract :

Efficient photocatalytic reduction of CO2 to high-calorific-value CH4, an ideal target product, is a blueprint for C-1 industry relevance and carbon neutrality, but it also faces great challenges. Herein, we demonstrate unprecedented hybrid SiC photocatalysts modified by Fe-based cocatalyst, which are prepared via a facile impregnation-reduction method, featuring an optimized local electronic structure. It exhibits a superior photocatalytic carbon-based products yield of 30.0 mu mol g(-1) h(-1) and achieves a record CH4 selectivity of up to 94.3%, which highlights the effectiveness of electron-rich Fe cocatalyst for boosting photocatalytic performance and selectivity. Specifically, the synergistic effects of directional migration of photogenerated electrons and strong pi-back bonding on low-valence Fe effectively strengthen the adsorption and activation of reactants and intermediates in the CO2 -> CH4 pathway. This study inspires an effective strategy for enhancing the multielectron reduction capacity of semiconductor photocatalysts with low-cost Fe instead of noble metals as cocatalysts.

Keyword :

artificial synthesis of CH4 artificial synthesis of CH4 electronic structure optimization electronic structure optimization Fe species cocatalyst Fe species cocatalyst photocatalytic CO2 reduction photocatalytic CO2 reduction SiC SiC

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GB/T 7714 Lin, Qianying , Zhao, Jiwu , Zhang, Pu et al. Highly selective photocatalytic reduction of CO2 to CH4 on electron-rich Fe species cocatalyst under visible light irradiation [J]. | CARBON ENERGY , 2024 , 6 (1) .
MLA Lin, Qianying et al. "Highly selective photocatalytic reduction of CO2 to CH4 on electron-rich Fe species cocatalyst under visible light irradiation" . | CARBON ENERGY 6 . 1 (2024) .
APA Lin, Qianying , Zhao, Jiwu , Zhang, Pu , Wang, Shuo , Wang, Ying , Zhang, Zizhong et al. Highly selective photocatalytic reduction of CO2 to CH4 on electron-rich Fe species cocatalyst under visible light irradiation . | CARBON ENERGY , 2024 , 6 (1) .
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Highly selective photocatalytic reduction of CO2 to CH4 on electron-rich Fe species cocatalyst under visible light irradiation EI CSCD
期刊论文 | 2024 , 6 (1) | Carbon Energy
Highly selective photocatalytic reduction of CO2 to CH4 on electron-rich Fe species cocatalyst under visible light irradiation Scopus CSCD
期刊论文 | 2024 , 6 (1) | Carbon Energy
Construction of a Rare Earth Up-Conversion Nanoparticle Sensor and Its Application in the Detection of Food Additives SCIE
期刊论文 | 2024 , 44 (9) , 2459-2466 | SPECTROSCOPY AND SPECTRAL ANALYSIS
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Abstract :

Rare earth up-conversion nanoparticles (UCNPs) have been used to construct fluorescent nanosensors because of their low toxicity, good chemical stability, and low background fluorescence. Core-shell UCNPs were prepared using the solvothermal method, and water-soluble core-shell UCNPs (Cit-CS-UCNPs) were obtained by surface ligand exchange with sodium citrate. The Cit-CS-UCNPs were used as the energy donor of the fluorescence sensor, and manganese dioxide (MnO2) nanosheets were used as the energy receptor of the fluorescence sensor. Based on the fluorescence resonance energy transfer (FRET) mechanism, a fluorescence nanosensor (Cit-CS-UCNPs-MnO2) was constructed for the detection of hydrogen dioxide (H2O2) and tert-butylhydroquinone (TBHQ ) as food additives. The prepared nanomaterials' morphology, structure, and properties were characterized by scanning electron microscopy (SEM), fluorescence spectrum, and ultraviolet spectrum (UV-vis). The effects of quenching agent concentration, incubation temperature, and incubation time on the detection performance of the fluorescence sensing system were investigated. According to the fluorescence spectra and UV-Vis experimental results, the maximum emission peak of Cit-CS-UCNPs is 654 nm. After the combination of Cit-CS-UCNPs and MnO2, core-shell UCNPs undergo fluorescence quenching. When H2O2 is present, the fluorescence of Cit-CS-UCNPs recovers. The results indicate that H2O2 and MnO2 nanosheets undergo redox reaction at this band, and MnO2 nanosheets are reduced to Mn2+, which gradually dissociates from the surface of Cit-CS-UCNPs. In the presence of TBHQ, the peak of the Cit-CS-UCNPs-MnO2 and TBHQ system was shifted to 253 nm, indicating that the redox reaction occurred between TBHQ and MnO2 nanosheets, and the FRET effect was reduced in the Cit-CS-UCNPs-MnO2 system, and the fluorescence intensity increased. It can be seen from the SEM results that MnO2 nanosheets are uniformly coated around Cit-CS-UCNPs, and maintain good dispersion in water, indicating that MnO2 nanosheets are modified on the surface of Cit-CS-UCNPs. The concentration of the quencher potassium permanganate (KMnO4) was optimized, and the results showed that when the concentration of KMnO4 is 10 mol.L-1, the quenching efficiency can reach 90%. The detection conditions were optimized, and the results showed that when the incubation time of H2O2 was 25 min, the redox reaction between MnO2 and H2O2 was complete. The fluorescence recovery value of Cit-CS-UCNPs-MnO2 was the maximum. The incubation time of TBHQ was 30 min. Under the optimal experimental conditions, the fluorescence intensity of Cit-CS-UCNPs-MnO2 has a good linear relationship with the concentration of H2O2 (0 similar to 1 000 mu mol.L-1) and TBHQ (0 similar to 0.6 mmol.L-1). The optimal experimental conditions were maintained, and representative metal ions (such as K+, Na+, Ca2+ and Mg2+) and common food additives (BA, Glu, PS, Suc, Nat and Ino) in food were selected as research objects. The results showed that compared with H2O2, Cit-CS-UCNPs-MnO2 did not react strongly to other added substances, and the overall fluorescence signal of the sensor did not fluctuate much. Therefore, it can be seen that Cit-CS-UCNPs-MnO2 can detect the specificity of H2O2 and TBHQ.

Keyword :

Core shell structures Core shell structures Fluorescent nanosensor Fluorescent nanosensor Up conversion nanoparticles Up conversion nanoparticles

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GB/T 7714 Zhang, Xuan , Wang, Ya-sen , Na, Wen et al. Construction of a Rare Earth Up-Conversion Nanoparticle Sensor and Its Application in the Detection of Food Additives [J]. | SPECTROSCOPY AND SPECTRAL ANALYSIS , 2024 , 44 (9) : 2459-2466 .
MLA Zhang, Xuan et al. "Construction of a Rare Earth Up-Conversion Nanoparticle Sensor and Its Application in the Detection of Food Additives" . | SPECTROSCOPY AND SPECTRAL ANALYSIS 44 . 9 (2024) : 2459-2466 .
APA Zhang, Xuan , Wang, Ya-sen , Na, Wen , Lu, Hai-xia , Li, Bao-ming . Construction of a Rare Earth Up-Conversion Nanoparticle Sensor and Its Application in the Detection of Food Additives . | SPECTROSCOPY AND SPECTRAL ANALYSIS , 2024 , 44 (9) , 2459-2466 .
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Construction of a Rare Earth Up-Conversion Nanoparticle Sensor and Its Application in the Detection of Food Additives; [基于稀土上转换纳米粒子传感器的构建及其在食品添加剂检测中的应用] Scopus
期刊论文 | 2024 , 44 (9) , 2459-2466 | Spectroscopy and Spectral Analysis
Construction of a Rare Earth Up-Conversion Nanoparticle Sensor and Its Application in the Detection of Food Additives EI
期刊论文 | 2024 , 44 (9) , 2459-2466 | Spectroscopy and Spectral Analysis
Synthesis and Durable Antimicrobial and Anti-fungal Properties of Triclosan and Chitosan Co-grafted Polypropylene Nonwovens SCIE
期刊论文 | 2024 , 25 (11) , 4245-4256 | FIBERS AND POLYMERS
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Abstract :

Polypropylene (PP) nonwovens have been widely used in disposable protective masks and protective clothing, which are essential to protect healthcare workers from highly infectious diseases such as COVID-19. However, realizing the disinfection reusable function of PP nonwovens to reduce carbon emission or white waste pollution after extensive use has been still a great challenge. Herein, Durable Antimicrobial and Anti-fungal Post-disinfection polypropylene nonwovens were developed by co-grafting of Triclosan and Chitosan. The antibacterial performance test results showed that the as-prepared co-grafted polypropylene nonwoven has a > 99.9% of antimicrobial efficiency against E. coli, S. aureus as well as multi-drug-resistant P. aeruginosa, and the excellent anti-fungal performance against fungus (C. albicans) and mold (A. niger). Moreover, it retained excellent Antimicrobial and Anti-fungal Properties after disinfection 3 times with boiling water, 40 x diluted 84 disinfectant and 75% alcohol for 5 min. This work provided ideas for developing more effective pathogen protection and longer-lasting personal protective equipment to reduce the environmental impact of medical masks and personal protective equipment in terms of energy consumption, carbon emissions and waste generation.

Keyword :

Antibacterial Antibacterial Anti-fungal Anti-fungal Polypropylene nonwovens Polypropylene nonwovens UV irradiation modification UV irradiation modification

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GB/T 7714 Hu, Ke , Chen, Hongxuan , Lin, Yihui et al. Synthesis and Durable Antimicrobial and Anti-fungal Properties of Triclosan and Chitosan Co-grafted Polypropylene Nonwovens [J]. | FIBERS AND POLYMERS , 2024 , 25 (11) : 4245-4256 .
MLA Hu, Ke et al. "Synthesis and Durable Antimicrobial and Anti-fungal Properties of Triclosan and Chitosan Co-grafted Polypropylene Nonwovens" . | FIBERS AND POLYMERS 25 . 11 (2024) : 4245-4256 .
APA Hu, Ke , Chen, Hongxuan , Lin, Yihui , Han, Shitong , Wang, Qi , Peng, Houqian et al. Synthesis and Durable Antimicrobial and Anti-fungal Properties of Triclosan and Chitosan Co-grafted Polypropylene Nonwovens . | FIBERS AND POLYMERS , 2024 , 25 (11) , 4245-4256 .
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Synthesis and Durable Antimicrobial and Anti-fungal Properties of Triclosan and Chitosan Co-grafted Polypropylene Nonwovens Scopus
期刊论文 | 2024 , 25 (11) , 4149-4160 | Fibers and Polymers
Synthesis and Durable Antimicrobial and Anti-fungal Properties of Triclosan and Chitosan Co-grafted Polypropylene Nonwovens EI
期刊论文 | 2024 , 25 (11) , 4149-4160 | Fibers and Polymers
Bio-Inspired Self-Healing Hydrogel for Fast Hemostasis and Accelerated Wound Healing of Gastric Ulcers SCIE
期刊论文 | 2024 , 35 (1) | ADVANCED FUNCTIONAL MATERIALS
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Abstract :

Gastric ulcers accompanied by acute or chronic bleeding represent a significant risk of fatality. However, the development of effective strategies for achieving rapid hemostasis and wound healing in gastric ulcer bleeding represents a formidable challenge. To address this challenge, thrombin-derived C-terminal peptide (TCP-25) is employed as a targeted agent, and it is incorporated into two novel injectable and biocompatible carboxymethyl chitosan (CMCs) hydrogels via Schiff's base reaction. The TCP-25 peptide hydrogels display optimal adaptability within the distinctive gastrointestinal microenvironment, demonstrating a balance of acid resistance and degradation, along with controlled release and bioactivity, and good bio-adhesive properties. Both in vitro and in vivo reveal that the hydrogel achieves rapid hemostasis. In an ethanol-induced gastric ulcer model in rats, it demonstrates that the hydrogel effectively inhibits gastric ulcer bleeding by 92% within 24-h, exhibiting efficacy that surpasses that of omeprazole medicine, a commonly used clinical treatment. This enhanced performance is attributed to the synergistic effects of the CMCs hydrogel and TCP-25 peptide in effectively achieving hemostasis, inhibiting bacterial growth, and promoting gastric wound healing in acute or chronic bleeding gastric ulcers. Consequently, the present work offers promising clinical applications for rapid hemostasis and wound healing in gastric ulcers. Bio-inspired self-healing hydrogel demonstrates rapid hemostasis and superior gastric ulcer hemostasis and wound healing in a rat model in vivo, exhibiting efficacy that surpasses that of omeprazole medicine, a commonly used clinical treatment. image

Keyword :

antibacterial ability antibacterial ability gastric ulcer healing gastric ulcer healing hemostasis hemostasis hydrogels hydrogels peptide peptide

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GB/T 7714 Wen, Na , Li, Shuangshuang , Jiang, Hongzhi et al. Bio-Inspired Self-Healing Hydrogel for Fast Hemostasis and Accelerated Wound Healing of Gastric Ulcers [J]. | ADVANCED FUNCTIONAL MATERIALS , 2024 , 35 (1) .
MLA Wen, Na et al. "Bio-Inspired Self-Healing Hydrogel for Fast Hemostasis and Accelerated Wound Healing of Gastric Ulcers" . | ADVANCED FUNCTIONAL MATERIALS 35 . 1 (2024) .
APA Wen, Na , Li, Shuangshuang , Jiang, Hongzhi , Yang, Jiachao , Yang, Weibo , Song, Yunhao et al. Bio-Inspired Self-Healing Hydrogel for Fast Hemostasis and Accelerated Wound Healing of Gastric Ulcers . | ADVANCED FUNCTIONAL MATERIALS , 2024 , 35 (1) .
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Bio-Inspired Self-Healing Hydrogel for Fast Hemostasis and Accelerated Wound Healing of Gastric Ulcers Scopus
期刊论文 | 2024 , 35 (1) | Advanced Functional Materials
Bio-Inspired Self-Healing Hydrogel for Fast Hemostasis and Accelerated Wound Healing of Gastric Ulcers EI
期刊论文 | 2025 , 35 (1) | Advanced Functional Materials
Superposition of dual electric fields in covalent organic frameworks for efficient photocatalytic hydrogen evolution SCIE
期刊论文 | 2024 , 63 , 164-175 | CHINESE JOURNAL OF CATALYSIS
WoS CC Cited Count: 2
Abstract&Keyword Cite Version(2)

Abstract :

Covalent organic frameworks (COFs) are promising materials for converting solar energy into green hydrogen. However, limited charge separation and transport in COFs impede their application in the photocatalytic hydrogen evolution reaction (HER). In this study, the intrinsically tunable internal bond electric field (IBEF) at the imine bonds of COFs was manipulated to cooperate with the internal molecular electric field (IMEF) induced by the donor-acceptor (D-A) structure for an efficient HER. The aligned orientation of IBEF and IMEF resulted in a remarkable H-2 evolution rate of 57.3 mmol center dot g(-1)center dot h(-1) on TNCA, which was approximately 520 times higher than that of TCNA (0.11 mmol center dot g(-1)center dot h(-1)) with the opposing electric field orientation. The superposition of the dual electric fields enables the IBEF to function as an accelerating field for electron transfer, kinetically facilitating the migration of photogenerated electrons from D to A. Furthermore, theoretical calculations indicate that the inhomogeneous charge distribution at the C and N atoms in TNCA not only provides a strong driving force for carrier transfer but also effectively hinders the return of free electrons to the valence band, improving the utilization of photoelectrons. This strategy of fabricating dual electric fields in COFs offers a novel approach to designing photocatalysts for clean energy synthesis. (c) 2024, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

Keyword :

Covalent organic framework Covalent organic framework Hydrogen evolution Hydrogen evolution Internal bond electric field Internal bond electric field Internal molecular electric field Internal molecular electric field Photocatalysis Photocatalysis

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GB/T 7714 Li, Chao , Wang, Shuo , Liu, Yuan et al. Superposition of dual electric fields in covalent organic frameworks for efficient photocatalytic hydrogen evolution [J]. | CHINESE JOURNAL OF CATALYSIS , 2024 , 63 : 164-175 .
MLA Li, Chao et al. "Superposition of dual electric fields in covalent organic frameworks for efficient photocatalytic hydrogen evolution" . | CHINESE JOURNAL OF CATALYSIS 63 (2024) : 164-175 .
APA Li, Chao , Wang, Shuo , Liu, Yuan , Huang, Xihe , Zhuang, Yan , Wu, Shuhong et al. Superposition of dual electric fields in covalent organic frameworks for efficient photocatalytic hydrogen evolution . | CHINESE JOURNAL OF CATALYSIS , 2024 , 63 , 164-175 .
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Superposition of dual electric fields in covalent organic frameworks for efficient photocatalytic hydrogen evolution Scopus
期刊论文 | 2024 , 63 , 164-175 | Chinese Journal of Catalysis
Superposition of dual electric fields in covalent organic frameworks for efficient photocatalytic hydrogen evolution EI
期刊论文 | 2024 , 63 , 164-175 | Chinese Journal of Catalysis
Dual network composite hydrogels with robust antibacterial and antifouling capabilities for efficient wound healing SCIE
期刊论文 | 2024 , 12 (20) , 4909-4921 | JOURNAL OF MATERIALS CHEMISTRY B
WoS CC Cited Count: 2
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Abstract :

Wound dressings play a critical role in the wound healing process; however, conventional dressings often address singular functions, lacking versatility in meeting diverse wound healing requirements. Herein, dual-network, multifunctional hydrogels (PSA/CS-GA) have been designed and synthesized through a one-pot approach. The in vitro and in vivo experiments demonstrate that the optimized hydrogels have exceptional antifouling properties, potent antibacterial effects and rapid hemostatic capabilities. Notably, in a full-thickness rat wound model, the hydrogel group displays a remarkable wound healing rate exceeding 95% on day 10, surpassing both the control group and the commercial 3M group. Furthermore, the hydrogels exert an anti-inflammatory effect by reducing inflammatory factors interleukin 6 (IL-6) and tumor necrosis factor-alpha (TNF-alpha), enhance the release of the vascular endothelial growth factor (VEGF) to promote blood vessel proliferation, and augment collagen deposition in the wound, thus effectively accelerating wound healing in vivo. These innovative hydrogels present a novel and highly effective approach to wound healing. Dual network multifunctional hydrogels are developed using a one-pot synthesis approach. The in vitro and in vivo experiments demonstrate that these hydrogels have exceptional antifouling properties, potent antibacterial effects and rapid hemostatic capabilities.

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GB/T 7714 Jiang, Hongzhi , Huang, Xueping , Yang, Jiachao et al. Dual network composite hydrogels with robust antibacterial and antifouling capabilities for efficient wound healing [J]. | JOURNAL OF MATERIALS CHEMISTRY B , 2024 , 12 (20) : 4909-4921 .
MLA Jiang, Hongzhi et al. "Dual network composite hydrogels with robust antibacterial and antifouling capabilities for efficient wound healing" . | JOURNAL OF MATERIALS CHEMISTRY B 12 . 20 (2024) : 4909-4921 .
APA Jiang, Hongzhi , Huang, Xueping , Yang, Jiachao , Yu, Xunbin , Yang, Weibo , Song, Yunhao et al. Dual network composite hydrogels with robust antibacterial and antifouling capabilities for efficient wound healing . | JOURNAL OF MATERIALS CHEMISTRY B , 2024 , 12 (20) , 4909-4921 .
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Dual network composite hydrogels with robust antibacterial and antifouling capabilities for efficient wound healing EI
期刊论文 | 2024 , 12 (20) , 4909-4921 | Journal of Materials Chemistry B
Dual network composite hydrogels with robust antibacterial and antifouling capabilities for efficient wound healing Scopus
期刊论文 | 2024 , 12 (20) , 4909-4921 | Journal of Materials Chemistry B
共价有机框架双电场叠加实现高效光催化产氢
期刊论文 | 2024 , 63 (8) , 164-175 | 催化学报
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Abstract :

光催化水分解制氢是解决环境污染和能源危机的理想途径.共价有机骨架(COFs)作为一类由共价键连接的周期性网状拓扑材料,其电子结构和化学性质可在分子水平上进行定制和调控,是研究半导体光催化剂构-效关系的理想模型.为了提高COFs的电荷分离效率,在COFs骨架上设计供体-受体(D-A)单元,构筑分子内电场(IMEF)促进电荷定向迁移是一种行之有效的策略.然而,在亚胺键连接的COFs中,亚胺键取向诱导产生的键内电场(IBEF)对光生激子的分离效率的影响往往被忽视.因此,进一步研究IMEF与IBEF之间的相互作用对COFs内光生电子转移动力学的影响具有重要意义,可为深入揭示光催化产氢机制提供关键信息. 本文报道了一种基于COFs的双电场叠加策略,用于提高光催化产氢反应效率.首先,通过将有机单元的末端官能团进行互换,利用水热法成功制备了两种亚胺键取向相反的强D-A型COFs光催化剂,TNCA和TCNA.其中,官能团的微小变化保证了由D-A结构组成的IMEF方向和强度的一致性,可以使得在仅改变IBEF的情况下全面研究COFs的电子结构.X射线粉末衍射、傅里叶变换红外光谱、固体核磁以及X射线光电子能谱等结果证实了两种COFs的成功合成.随后,扫描电镜、透射电镜和氮气等温吸脱附曲线结果表明两种COFs均为介孔材料.紫外-可见漫反射光谱结果表明,所制备的催化剂具有良好的可见光吸收能力,结合莫特肖特基曲线结果,表明催化剂在热力学上均满足光催化产氢的要求.采用光致发光光谱、时间分辨荧光光谱、电子顺磁共振、光电流以及电化学阻抗研究了两种催化剂的载流子分离和转移行为,并且利用飞秒瞬态吸收光谱进一步明确了COFs中光生电荷转移动力学过程.结果表明,相较于TCNA,TNCA在光照下能够产生更多的光生电子且具有更长的寿命.光催化产氢活性评价结果显示,在可见光(A ≥ 420nm)照射下,具有同向叠加电场的TNCA,光催化析氢速率高达57.3 mmol·g-1·h-1,是具有相反电场取向TCNA(0.11 mmol·g-1·h-1)的520倍.并且TNCA具有更负的导带能级,有利于光生电子参与还原过程,最终获得较好的光催化析氢性能.此外,理论计算结果表明,当IMEF和IBEF取向一致时,亚胺键不仅可以为载流子迁移提供强大的驱动力,而且还能够有效地抑制载流子复合,进一步提高光生电子的利用率. 综上所述,本文提出了双电场叠加增强光生载流子高效分离的有效策略,为设计具有特定电场性质的COFs光催化材料提供了理论及实际参考.

Keyword :

光催化 光催化 共价有机框架 共价有机框架 分子内电场 分子内电场 制氢 制氢 键内电场 键内电场

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GB/T 7714 厉超 , 王朔 , 刘媛 et al. 共价有机框架双电场叠加实现高效光催化产氢 [J]. | 催化学报 , 2024 , 63 (8) : 164-175 .
MLA 厉超 et al. "共价有机框架双电场叠加实现高效光催化产氢" . | 催化学报 63 . 8 (2024) : 164-175 .
APA 厉超 , 王朔 , 刘媛 , 黄细河 , 庄严 , 吴舒鸿 et al. 共价有机框架双电场叠加实现高效光催化产氢 . | 催化学报 , 2024 , 63 (8) , 164-175 .
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