Interdisciplinary Materials
·
2024
·
IF 24.5
Yi Liu,Tianyi Hou,Wei Zhang,Bin Gou,Faqiang Li,Haonan Wang,Xin Deng,Dinggen Li,Henghui Xu,Yunhui Huang
Commercial polyolefin separators in lithium batteries encounter issues of uncontrolled lithium-dendrite growth and safety incidents due to their low Li + transference numbers ( t Li + ${t}_{{\mathrm{Li}}^{+}}$ ) and low melting points. To address these challenges, this study proposes an innovative approach by upgrading conventional separators through the incorporation of metal-organic framework (MOF)-confined polyoxometalate (POM). The presence of POM restricts anion diffusion through electrostatic repulsion while facilitating Li + transport within MOF nanochannels through their affinity for lithium ions. Moreover, MOF confinement effectively mitigates the acidification of electrolytes induced by POM. As a proof-of-concept, the polypropylene separators decorated with phosphotungstic acid@UIO66 (denoted as PW 12 @UIO66-PP) exhibit remarkable lithium-ion conductivity of 0.78 mS cm −1 with a high t Li + ${t}_{{\mathrm{Li}}^{+}}$ of 0.75 at room temperature. The modified separators also display excellent thermal stability, preventing significant shrinkage even at 150°C. Furthermore, Li symmetric cells employing PW 12 @UIO66-PP separators exhibit stable cycling for 1000 h, benefiting from rapid Li-ion transport and uniform deposition. Additionally, the modified separator shows promising adaptability to industrial manufacturing of lithium-ion batteries, as evidenced by the assembly of a 4 Ah NCM811/graphite pouch cell that retains 97% capacity after 350 cycles at C/3, thus highlighting its potential for practical applications.
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CHINESE JOURNAL OF CATALYSIS
·
2025
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IF 17.7
Guohao Na,Hongshun Zheng,Mingpeng Chen,Huachuan Sun,Yuewen Wu,Dequan Li,Yun Chen,Boran Zhao,Bo Zhao,Tong Zhou,Tianwei He,Yuxiao Zhang,Jianhong Zhao,Yumin Zhang,Jin Zhang,Feng Liu,Hao Cui,Qingju Liu
Metal-support interaction (MSI) is regarded as an indispensable manner to stabilize active metals and modulate catalytic activity, which shows great potentials in developing of efficient hydrogen evolution reaction (HER) electrode with high activity and strong robustness. Herein, this work presents a novel heterostructure with ultrafine platinum quantum dots (Pt QDs) on defective catalytic supports derived from metal-organic frameworks (MOFs). It is indicated substantial oxygen vacancies can be generated and Pt–Pt bonds can be optimized through topological transformation. The resulting Pt/T-NiFe-BDC (BDC: C 8 H 6 O 4 ) exhibits competitive HER activity in alkaline seawater, attaining ultralow overpotentials of 158 and 266 mV at 500 and 1000 mA cm –2 with fast kinetics and outstanding stability. An asymmetric water electrolyzer using Pt/T-NiFe-BDC as a cathode only requires a voltage of 1.89 V to generate an industrial density of 1000 mA cm –2 and shows no attenuation in 500-h continuous test at 500 mA cm –2 . Theoretical calculations and in-situ spectroscopic analysis reveal the reversible hydrogen spillover mechanism, in which oxygen vacancies facilitate the sluggish water dissociation and Pt QDs promote the H* combination. This study provides a new paradigm to engineer metal-supported catalysts for efficient and robust seawater splitting.
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Advanced Science
·
2022
·Vol. 9
·期 35
·2204553
·
IF 17.521
Zhou Zhu,Yanhua Liu,Junyu Chen,Zihan He,Pengfei Tan,Yong He,Xibo Pei,Jian Wang,Lin Tan,Qianbing Wan
Silk fibroin (SF) is widely used to fabricate biomaterials for skin related wound caring or monitoring, and its hydrogel state are preferred for their adaptability and easy to use. However, in–depth development of SF hydrogel is restricted by their limited mechanical strength, increased risk of infection, and inability to accelerate tissue healing. Therefore, a structure–function pluralistic modification strategy using composite system of metal organic framework (MOF) as bridge expanding SF's biomedical application is proposed. After developing the photocuring and bonding SF hydrogel, a MOF drug–loading system is utilized to enhance hydrogel's structural strength while endowing its antibacterial and angiogenic properties, yielding a multifunctional SF hydrogel. The synergy between the MOF and SF proteins at the secondary structure level gives this hydrogel reliable mechanical strength, making it suitable for conventional wound treatment, whether for closing incisions quickly or acting as adhesive dressings (five times the bonding strength of ordinary fibrin glue). Additionally, with the antibacterial and angiogenic functions getting from MOF system, this modified SF hydrogel can even treat ischemic trauma with cartilage exposure. This multiple modification should contribute to the improvement of advanced wound care, by promoting SF application in the production of tissue engineering materials.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xue Wu,Hui Li,Fei Ge,Wenlin Xu,Hailong Lu,Minghao Zhou
Upgrading of lignin-derived bio-oil to value-added biofuel was of great significance for efficient utilization of renewable resources and reducing the use of fossil fuels. Hydrodeoxygenation (HDO) was considered to be a promising technology for the conversion of lignin-derived bio-oil. Herein, we reported a novel method for the preparation of lignin-MOF derived N-doped catalysts, which was then successfully introduced into the upgrading of lignin-derived phenols and lignin depolymerization. All catalysts were well characterized and Co/CN-0.5–750 exhibited excellent performance during the catalytic HDO process. The optimized catalyst demonstrated highly efficient active hydrogen generation from isopropanol. Moreover, it could afford the best vanillin (VAN) conversion (100 %) and highest 2-Methoxy-4-methylphenol (MMP) yield (92 %) under the mild reaction conditions (180 °C, 0.5 MPa nitrogen, 2 h). It was confirmed that the excellent performance was related to nitrogen doping. This study could provide some useful insights for the hydrodeoxygenation of lignin and its derivative.
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Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 46
·32030-32044
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IF 10.7
Xue Bi,Kunpeng Song,Qianlong Li,Tao Lin,Ye-Tang Pan,Wei Wang,Jiyu He,Rongjie Yang
In recent years, there have been few reports on the application of zeolites in the field of flame retardants, although their excellent thermal stability indicates great potential as flame retardants. However, a key challenge that needs to be solved urgently is the compatibility between molecular sieves as inorganic fillers and polymer matrices, which directly affects their performance and stability in practical applications. In this work, ZSM-5 zeolite was used as the carrier, Ce ions were introduced through ion exchange, and the growth of Ce-MOF was restricted on its surface, and a Ce-MOF@ZSM-5 hybrid material was designed to improve the flame retardant and ultraviolet resistance properties of thermoplastic polyurethane elastomer (TPU). The absorbance value of TPU composites in the whole region is significantly higher than that of pure TPU, and its absorbance reaches 1.33. Compared with pure TPU, the peak heat release rate and peak smoke production rate of TPU/Ce-MOF@ZSM-5 composites were reduced by 26.0% and 34.8%, respectively. In addition, the chemical resistance of TPU composites has been significantly improved. This work provides the possibility of preparing three-proofing TPU materials with UV resistance, chemical resistance and fire resistance, and is expected to expand the application of TPU materials in other fields.
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ChemCatChem
·
2025
·
IF 3.9
Manting Zhang,Chenggong Wang,Tingting Zhou,Yuqiao Wang,Gang Huang,Fengyan Han,Huaiyu Shao,Caiqin Wang
Developing efficient bifunctional electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) to improve the hydrogen production efficiency from water splitting is decisive. In this work, we developed an efficient strategy to obtain NiCoRux trimetal composite catalyst from NiCo-MOF heterojunction with nano-flower-like ZIF-67 growing on layered Ni-BDC. The unique dual-MOF heterointerface creates rich electrochemical surface to anchor ruthenium species; and the synergistic effect among multiple components (Ru, Ni and Co) in NiCoRux improved the catalytic performances in HER and OER processes. As a result, the as-obtained NiCoRu0.5 exhibited excellent catalytic activity and stability for HER and OER in alkaline media, specially presented the overpotential of 240 mV for OER at 20 mA cm-2. This work offers a feasible way to optimize the transition metal-based catalysts for improved electrocatalysis efficiency in overall water splitting.
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MOLECULES
·
2022
·Vol. 27
·期 17
·5427
·
IF 4.927
Song Li,Jing Yan,Qiangqiang Zhu,Xinxiang Liu,Senlin Li,Shenhou Wang,Xuanjun Wang,Jun Sheng
Tea contains high levels of the compound epigallocatechin gallate (EGCG). It is considered an important functional component in tea and has anti-cancer, antioxidant, and anti-inflammatory effects. The eight phenolic hydroxyl groups in EGCG’s chemical structure are the basis for EGCG’s multiple biological effects. At the same time, it also leads to poor chemical stability, rendering EGCG prone to oxidation and isomerization reactions that change its original structure and biological activity. Learning how to maintain the activity of EGCG has become an important goal in understanding the biological activity of EGCG and the research and development of tea-related products. Metal–organic frameworks (MOFs) are porous materials with a three-dimensional network structure that are composed of inorganic metals or metal clusters together with organic complexes. MOFs exploit the porous nature of the material itself. When a drug is an appropriate size, it can be wrapped into the pores by physical or chemical methods; this allows the drug to be released slowly, and MOFs can also reduce drug toxicity. In this study, we used MOF Zn(BTC)4materials to load EGCG and investigated the sustained release effect of EGCG@MOF Zn(BTC)4and the biological effects on wound healing in a diabetic mouse model.Keywords:EGCG;MOF;wound healing;diabetes
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Meisi Chen,Dandan Hao,Yuwen Shao,Tong Zhao,Chengyi Qiu,Xiemin Liu,Muhua Chen,Gang Zhang,Xinbao Zhu,Bo Fu
Cellulose directs Mg/Ni-MOF-74 growth on fiber surfaces. • Tuning Mg/Ni ratio optimizes pore structure and open metal site characteristics. • MNC-1 exhibits high CO 2 capacity and CO 2 /N 2 selectivity (>200). • Hierarchical porosity facilitates both CO 2 confinement and gas mass transfer. • Low isosteric heat of adsorption promotes easy regeneration. To overcome the poor dispersibility and limited gas mass transfer of MOF powders, a series of Mg/Ni-MOF-74/cellulose composites (MNC-x) were fabricated via cellulose interface directed in situ growth. The effects of the Mg/Ni ratio on the material structure and CO 2 /N 2 adsorption performance were investigated. Results showed that the introduction of Ni altered the local environment and crystal size, regulating the pore structure and adsorption sites of the MNC-x series materials. The optimal sample (MNC-1) achieved a static CO 2 adsorption capacity of 2.67 mmol·g −1 at 298 K and exhibiting superior cycling performance. IAST theoretical calculations indicated that MNC-1 possessed high CO 2 /N 2 selectivity, with an initial isosteric heat of adsorption of only 34.51 kJ·mol −1 , indicating that physical adsorption was predominant. Combined with DFT analysis, the excellent CO 2 adsorption performance of MNC-1 was mainly attributed to the interaction between the open metal sites of Mg/Ni and CO 2 , as well as the hierarchical pore structure formed by the microporous adsorption sites and mesoporous mass transfer channels. This study provides a feasible strategy for designing cellulose-supported, processable bimetallic MOF adsorbents for CO 2 adsorption. Download: Download high-res image (269KB) Download: Download full-size image
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DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 35
·12244-12252
·
IF 4
Shen Yu,Zhan Liu,Jia-Min Lyu,Chun-Mu Guo,Yi-Long Wang,Zhi-Yi Hu,Yu Li,Ming-Hui Sun,Li-Hua Chen,Bao-Lian Su
The catalytic oxidative desulfurization (ODS) technique is able to remove sulfur compounds from fuels, conducive to achieving deep desulfurization for the good of the ecological environment. Ti-based metal–organic frameworks (Ti-MOFs) possessing good affinity to organic reactants and considerable numbers of Ti active sites are promising catalysts for ODS. However, current Ti-MOFs suffer from severe diffusion limitations caused by the size mismatch between sole micropores and bulky sulfur compounds, leading to poor ODS performance. Here, a facile method of intraparticle ripening without any additive is developed to obtain hierarchically meso–microporous Ti-MIL-125 single crystals (Meso-Ti-MIL-125) for the first time. Such Meso-Ti-MIL-125 shows a BET surface area of 1401 m2 g−1 and a mesoporous volume that is 1.7 times as high as that of the conventional Ti-MIL-125. Our novel Meso-Ti-MIL-125 exhibits excellent catalytic performance in the ODS of a series of bulky thiophenic sulfur compounds, completely removing benzothiophene (BT), dibenzothiophene (DBT), and 4,6-dimethyldibenzothiophene (DMDBT) from model fuels, which is, respectively, 2.4 times, 1.5 times, and 6.7 times higher than the removal achieved with conventional Ti-MIL-125. Such a facile synthetic strategy is envisioned to be applied in many kinds of crystalline materials, such as zeolites, for industrial production.
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高影响因子
MATERIALS LETTERS
·
2019
·
IF 3.019
Qilei Wu,Jun Wang,Huihui Jin,Tingyu Yan,Guoqiang Yi,Xiaogang Su,Wei Dai,Xiang Wang
Nanoporous carbon (NPC) composites embedded with magnetic nanoparticles have been widely studied for applications in microwave absorption. Herein, highly porous rambutan-like carbon composites decorated with controllable carbon nanotubes (CNTs) and Co nanoparticles were synthesized through a thermal decomposition of Co-doped zeolitic imidazolate frameworks-8 (ZIF-8) under different temperatures. The MOF-derived carbon nanocomposites with the cobalt content accounting for 30% of the total mass of cobalt and zinc, carbonized at 700 °C, exhibited excellent microwave absorption property of −30.2 dB. Characterizations exhibit that the in-situ generated Co nanoparticles are uniformly embedded into NPC matrix, which are surrounded by highly graphitized CNTs. The research presents a facile and promising route for rapid mass production of metal-doped NPC/CNTs composites for high-efficiency microwave absorption.
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International Journal of Minerals Metallurgy and Materials
·
2022
·Vol. 29
·期 5
·1061-1072
·
IF 3.85
Zhong Jianjian,Qin Lu,Li Jianling,Yang Zhe,Yang Kai,Zhang Mingjie
Two-dimensional Ti 3 C 2 T x exhibits outstanding rate property and cycle performance in lithium-ion capacitors (LICs) due to its unique layered structure, excellent electronic conductivity, and high specific surface area. However, like graphene, Ti 3 C 2 T x restacks during electrochemical cycling due to hydrogen bonding or van der Waals forces, leading to a decrease in the specific surface area and an increase in the diffusion distance of electrolyte ions between the interlayer of the material. Here, a transition metal selenide MoSe 2 with a special three-stacked atomic layered structure, derived from metal—organic framework (MOF), is introduced into the Ti 3 C 2 T x structure through a solvo-thermal method. The synergic effects of rapid Li + diffusion and pillaring effect from the MoSe 2 and excellent conductivity from the Ti 3 C 2 T x sheets endow the material with excellent electrochemical reaction kinetics and capacity. The composite Ti 3 C 2 T x @MoSe 2 material exhibits a high capacity over 300 mAh·g −1 at 150 mA·g −1 and excellent rate property with a specific capacity of 150 mAh·g −1 at 1500 mA·g −1 . Additionally, the material shows a superior capacitive contribution of 86.0% at 2.0 mV·s −1 due to the fast electrochemical reactions. A Ti 3 C 2 T x @MoSe 2 //AC LIC device is also fabricated and exhibits stable cycle performance.
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CRYSTENGCOMM
·
2021
·Vol. 23
·期 29
·5097-5105
·
IF 3.545
Zhenguo Wang,Ke Yu,Rong Huang,Ziqiang Zhu
With the development of the economy, energy shortages and the greenhouse effect gradually become problems facing humanity. Hydrogen energy is clean energy and is expected to become the most vital low-carbon energy in the future. At present, industrial hydrogen production mainly uses precious metals such as Pt. Therefore, it is of great significance to design a low-cost hydrogen evolution catalyst comparable in terms of hydrogen production performance and stability. In this work, porous Co3O4 with a hollow structure was prepared using the MOF template method, and VS2 nanosheets were uniformly attached and grown hydrothermally on it, thereby constructing a unique morphology of TS-Co3O4@VS2. The test results show that the catalyst can achieve a hydrogen evolution overpotential as low as 175.29 mV and a low Tafel slope (57.0 mV dec−1) and can work stably for 500 cycles at a current density of 100 mA cm−2 without noticeable performance degradation. Compared with other similar materials, this material significantly improves the kinetic process of the HER, reduces the reaction energy barrier for hydrogen evolution, and improves the operational stability of the catalyst. We believe that this material can provide a reference for the design of transition metal disulfide catalysts.
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