JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Jia Wang,Yu Jiang,Chunbo Liu,Yuanyuan Wu,Bo Liu,Wei Jiang,Hongji Li,Guangbo Che
Evidence shows that self-supported electrocatalysts are crucial role to solving environmental and energy issues. In this study, self-supported 2D metal–organic framework (MOF) nanosheets grown in situ on nickel–iron foam (NFF) were prepared by a one-step solvothermal process. The hierarchical nanostructure possesses a high specific surface area and abundant metal sites, which are beneficial for electrocatalytic reactions. In the electrocatalytic oxygen evolution reaction (OER), the optimal NiFe(20Ni)-MOF/NFF can drive current densities of 10, 50 and 100 mA cm −2 at small overpotentials of 226, 277 and 294 mV, respectively. According to the characterization results, the OER performance is improved by the synergistic action of bimetals and the generation of hydroxides/oxyhydroxides. This work provides new insights into fabricating self-supported MOF-based electrodes for water splitting that are simple and highly efficient.
研究领域:
材料科学
·
电化学
·
能源材料
✓ 已验证
DOI
PubMed
高影响因子
ACS Nano
·
2024
·
IF 15.8
Wei Ling,Xue Shang,Chaonan Yu,Chenxi Li,Kedi Xu,Linqing Feng,Yina Wei,Tao Tang,Xian Huang
Continuously monitoring neurotransmitter dynamics can offer profound insights into neural mechanisms and the etiology of neurological diseases. Here, we present a miniaturized implantable fluorescence probe integrated with metal–organic frameworks (MOFs) for deep brain dopamine sensing. The probe is assembled from physically thinned light-emitting diodes (LEDs) and phototransistors, along with functional surface coatings, resulting in a total thickness of 120 μm. A fluorescent MOF that specifically binds dopamine is introduced, enabling a highly sensitive dopamine measurement with a detection limit of 79.9 nM. A compact wireless circuit weighing only 0.85 g is also developed and interfaced with the probe, which was later applied to continuously monitor real-time dopamine levels during deep brain stimulation in rats, providing critical information on neurotransmitter dynamics. Cytotoxicity tests and immunofluorescence analysis further suggest a favorable biocompatibility of the probe for implantable applications. This work presents fundamental principles and techniques for integrating fluorescent MOFs and flexible electronics for brain-computer interfaces and may provide more customized platforms for applications in neuroscience, disease tracing, and smart diagnostics.
研究领域:
神经科学
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生物医学工程
·
材料科学
·
电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Saudi Chemical Society
·
2024
·
IF 5.8
Yu Zheng,Qing Shen,Jie Gao,Tian Liang,Xiao-Bing Han,Yuan Zhao,Tao Chen
Antibiotic contamination is a global environmental problem. The emerging contaminant norfloxacin (NOR) may increase the risk of drug resistance and thereby harm human health. The practical application of metal–organic framework crystals is usually limited by their powder form and difficulty in recovery. In this study, a magnetic Co-MPS-800 composite was prepared from carbonization with ZIF-67@pine sawdust, and significantly raised the NOR removing ability from wastewater. The changes in functional group composition, elemental contents, morphology, thermal stability and adsorption mechanism of the magnetic Co-MPS-800 composite were interpreted using FT-IR, XRD, SEM, BET, TGA and XPS. The Co-MPS-800 has an isoelectric point of 9.15 and a large specific surface area (174.58 m 2 ·g −1 ). The impacts of pH, contact time, temperature and dosage on the performance of Co-MPS-800 were also studied. The adsorption capacity over NOR reached 221.98 mg·g −1 at 303 K, pH=6.0. The NOR adsorption is best suited a pseudo-2nd-order kinetic model and the Freundlich isotherm. Co-MPS-800 also had excellent reusability, and the removal rate reached 82.94 % after four repeated uses. Therefore, the magnetic Co-MPS-800 composite is effective in removing NOR from aqueous solutions. Altogether, this functional MOF-derived porous carbon may serve as a promising pollutant biosorbent, and its preparation strategy may provide insights for future studies.
研究领域:
环境科学
·
材料科学
·
化学工程
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Peng Wang,Zijing Liu,Yanwei Xing,Bin Fan,Yulong He,Ting Gao,Wenlei Zhang,Yunfei Gao,Shuang Wang,Jinping Li
Electrocatalytic nitrogen reduction reaction (ENRR) is considered as a potential pathway for green synthesis of ammonia. However, the kinetic barriers of ENRR remain a tough challenge, which is imperative to design high effective electrocatalysts for accelerated activation of N N. Herein, the FeS/ZnS/ZIF-8-L with rich heterogeneous interfaces was successfully fabricated by governing the ordered lasso arrangement of Fe and Zn nodes in Fe-2MIM/ZIF-8-L precursor, where Fe and Zn were separately fixed in the confined space of ZIF-8-L and Fe-2MIM. Such intertwined Fe-2MIM/ZIF-8-L structure was beneficial to control the location and concentration of FeS and ZnS after sulfidation pyrolysis. The high-efficiency FeS/ZnS/ZIF-8-L exposed more catalytic active sites and possessed optimal electronic structure resulting in the lowered energy barrier of ENRR and the enhanced adsorption and activation of N 2 , which confirmed by experimental and theoretical characterization results. As a result, FeS/ZnS/ZIF-8-L displayed an optimal NH 3 yield rate of 89.52 μg h −1 mg −1 and Faradaic efficiency of 16.78 %, which surpassed most reported heterostructured ENRR catalysts. Our findings shed a new insight to govern the interfaces density of heterostructured electrocatalysts by predesigning the location of two metals in precursor, which can motivate an in-depth exploration to advanced catalysts for various electrocatalytic reactions.
研究领域:
电催化
·
材料科学
·
纳米技术
·
能源化学
·
可持续化学
✓ 已验证
产品关联
DOI
高影响因子
NATURE MATERIALS
·
2020
·Vol. 19
·期 5
·552-558
·
IF 38.663
Bi Sheng,Banda Harish,Chen Ming,Niu Liang,Chen Mingyu,Wu Taizheng,Wang Jiasheng,Wang Runxi,Feng Jiamao,Chen Tianyang,Dincă Mircea,Kornyshev Alexei A.,Feng Guang
We performed constant-potential molecular dynamics simulations to analyse the double-layer structure and capacitive performance of supercapacitors composed of conductive metal–organic framework (MOF) electrodes and ionic liquids. The molecular modelling clarifies how ions transport and reside inside polarized porous MOFs, and then predicts the corresponding potential-dependent capacitance in characteristic shapes. The transmission line model was adopted to characterize the charging dynamics, which further allowed evaluation of the capacitive performance of this class of supercapacitors at the macroscale from the simulation-obtained data at the nanoscale. These ‘computational microscopy’ results were supported by macroscopic electrochemical measurements. Such a combined nanoscale-to-macroscale investigation demonstrates the potential of MOF supercapacitors for achieving unprecedentedly high volumetric energy and power densities. It gives molecular insights into preferred structures of MOFs for accomplishing consistent performance with optimal energy–power balance, providing a blueprint for future characterization and design of these new supercapacitor systems.
研究领域:
材料科学
·
电化学
·
纳米技术
·
计算化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2020
·Vol. 49
·期 35
·12327-12337
·
IF 4.174
Mingyue Xu,Bin Chi,Zhiyuan Han,Yuting He,Feng Tian,Zushun Xu,Ling Li,Jing Wang
Gd3+ and Tm3+ doped Prussian blue (Gd/Tm–PB) with high uniformity and dispersibility was synthesized by a facile solvothermal method. The conditions for the synthesis of Gd/Tm–PB were explored. Through the regulation of the ratio of Gd3+/Tm3+, the Gd/Tm–PB particles with the optimal size (about 150–200 nm) and the best fluorescence and photothermal effect were obtained. On the basis of the optimal Gd/Tm–PB, further coated by polydopamine (PDA) functionalized metal–organic frameworks (MOFs), a multifunctional platform Gd/Tm–PB@ZIF-8/PDA for cancer diagnosis and treatment was established. Doxorubicin (DOX) was selected as a drug model and the drug loading of Gd/Tm–PB@ZIF-8/PDA was found to be 81 mg g−1. Cytotoxicity analysis indicated that Gd/Tm–PB@ZIF-8/PDA was highly biocompatible. The DOX release at different pH values and GSH concentrations revealed an excellent pH/GSH-triggered drug release. Through the combination of the near infrared photothermal performance of Gd/Tm–PB, chemo-photothermal therapy can be achieved to further improve the anti-cancer efficiency. In addition, the Gd/Tm–PB@ZIF-8/PDA nanoparticles can be tracked by fluorescence imaging (FOI) and magnetic resonance imaging (MRI). Cell FOI and in vivo MRI experiments showed the potential application of Gd/Tm–PB@ZIF-8/PDA in dual mode imaging guided therapy. In vivo antitumor experiments demonstrated the higher anticancer efficacy of Gd/Tm–PB@ZIF-8/PDA with a combined effect of chemo-photothermal therapy. This work provides a new strategy for nano-drug carriers in the direction of integrated diagnosis and treatment.
研究领域:
纳米技术
·
生物医学工程
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癌症研究
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材料科学
·
药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2022
·Vol. 18
·期 20
·2200178
·
IF 15.153
Lunjie Huang,Da-Wen Sun,Hongbin Pu
Metal-organic frameworks (MOFs) are a versatile toolbox for the bioinspired design of nanozymes for antibacterial applications and beyond, however, designing a nanozyme by the hierarchical quasi-MOF scheme remains largely unpracticed. This work exemplifies the preferential structure-activity correlation of a bimetallic quasi-MOF (Q-MOF Ce0.5 ) among three series of MOF-derived peroxidase (POD) mimics. The biomimetic quasi-MOF Ce0.5 nanosheets accommodate both oxygen vacancy-coupled multivalent redox cycles and photosensitive energy band layout, benefiting from the hierarchical heterojunction-like 0D/2D interface featuring isolated nodes-derived Ce O Cu sites upon the 2D decarboxylated MOF scaffold. These integrated unique merits enable the POD-like Q-MOF Ce0.5 to generate sustained reactive oxygen species to effectively eradicate the surface-adhered bacteria under visible light, resulting in significant inactivation of Escherichia coli (99.74 %) and Staphylococcus aureus (99.35%) in vitro, and potent disinfection of skin wounds in vivo in safe and on-demand manners. It is hoped that this work can intensify the interventions of MOF nanozymes against the microbial world.
研究领域:
纳米技术
·
生物催化
·
抗菌材料
·
材料科学
·
生物工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Xiaoyu Huang,Yuan Yang,Jialu Zhao,Yin Huang,Xiuhua Wang
Metal-organic frameworks (MOFs) have sparked considerable interest as prospective metal precursors or sacrificial templates to design high-performance supercapacitor electrode materials. Here Co 3 S 4 @NiCo 2 S 4 nanocages supercapacitor electrode material with a dual-core layer hollow structure was successfully constructed through an appropriate ion-exchange strategy of MOFs and the subsequent vulcanization treatment. The specific capacitance of the Co 3 S 4 @NiCo 2 S 4 electrode was up to 1202 F g −1 at 1 A g −1 and could still attain 80% initial capacity at 10 A g −1 . The integrated Co 3 S 4 @NiCo 2 S 4 //AC asymmetric supercapacitor achieved 58 Wh kg −1 of energy density at 750 W kg −1 of power density. The asymmetric supercapacitor retained 81.8% of its capacitance after 10,000 galvanostatic charge-discharge cycles. In this study, the individual nanostructure and excellent electrochemical properties of Co 3 S 4 @NiCo 2 S 4 nanocages provide a rational strategy for developing high-energy-density supercapacitor electrode materials based on MOFs derivatives.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-10
·
IF 15.7
Chen Yong-Jun,Xu Yi-Ming,Ye Xiao-Liang,Luo Zhi-Peng,Zhu Shi-Peng,Li Ke-Feng,Lu Jiang-Feng,Wang Guan-E,Xu Gang
To significantly enhance reaction efficiency of porous heterojunctions in various applications, precise engineering of customization heterostructures through energy-level modulation is indispensable. Herein, the preparation of a core-shell porous heterojunction, UiO-66@TDCOF, is reported. Taking advantage of adjustable structure of metal-organic frameworks (MOFs), the energy-level of UiO-66 core is tailored to precisely align with that of porphyrin-based covalent organic framework (denoted as TDCOF) shell. As a results, the heterojunction transitions flexibly from a type-I to a type-II configuration, which remarkably enhances the efficiency of charge separation under light irradiation, resulting in exceptional performances in chemiresistive gas sensing. Notably, the sensitivity of (NH 2 ) 1.24 -UiO-66@TDCOF towards NO 2 is at a high level among all reported heterojunctions under visible-light condition, surpassing the majority of previously reported MOF and COF materials. This research not only presents a strategy for the design of heterojunctions but also gives an approach to material design tailored for chemical applications.
研究领域:
材料科学
·
纳米技术
·
气体传感技术
·
异质结工程
·
光化学
·
化学传感器
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2018
·Vol. 14
·期 21
·1800639
·
IF 9.598
Lingjun Kong,Chen-Chao Xie,Haichen Gu,Chao-Peng Wang,Xianlong Zhou,Jian Liu,Zhen Zhou,Zhao-Yang Li,Jian Zhu,Xian-He Bu
Hierarchical porous structures are highly desired for various applications. However, it is still challenging to obtain such materials with tunable architectures. Here, this paper reports hierarchical nanomaterials with oriented 2D pores by taking advantages of thermally instable bonds in vanadium-based metal–organic frameworks (MOFs). High-temperature calcination of these MOFs accompanied by the loss of coordinated water molecules and other components enables the formation of orderly slit-like 2D pores in vanadium oxide/porous carbon nanorods (VO x /PCs). This unique combination leads to an increase of the reactive surface area. In addition, optimized VO x /PCs demonstrate high-rate capability and ultralong cycling life for sodium storage. The assembled full cells also show high capacity and cycling stability. This report provides an effective strategy for producing MOFs-derived composites with hierarchical porous architectures for energy storage.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
DOI
高影响因子
TALANTA
·
2024
·
IF 5.6
Xiying Chen,Haijuan Qin,Xiao Zhou,Weiran Li,Jingjing Zhang,Shuo Wang,Yaqing Liu
Azodicarbonamide (ADA) in flour products is easily converted to semicarbazide which greatly threatens human health. Herein, a long-lasting chemiluminescence (CL)-based biosensor was developed for quantitative point-of-care testing (POCT) of ADA. The threonine (Thr)-functionalized Cu-hemin MOFs (Cu-hemin@Thr) could induce persistent CL of luminol with excellent stability. The CL intensity was related to the competition reaction among ADA and a composite of glutathione-silver ions (GSH-Ag + ). In the presence of ADA, GSH is oxidized to glutathione disulfide (GSSG), which breaks the coordination between Ag + and GSH. The CL of the sensing system is then decreased which is expected to be used for ADA detection. By combining a homemade portable device as a detector and a smartphone as an analyzer, quantitative POCT of ADA was successfully achieved. The limit of detection was 0.562 μM (0.065 ppm), which is much lower than the maximum permissible concentration of ADA (45 ppm) in flour extract. The developed strategy demonstrated quantitative POCT capabilities along with advantages of low cost, excellent selectivity, and repeatability, presenting great potential application in food safety and environment monitoring.
研究领域:
分析化学
·
食品安全
·
环境监测
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Xin Jiang,Sanmei Liu,Wen Wang,Shunli Shi,Zhenxing Zeng,Chao Chen
Photocatlytic water disinfection for pathengenic miroorgasnisms removal is of great importance to public health safety, however the photocataltyic performance is unsatisfactory due to the low reactive oxygen species (ROS) generation. In this work, an innovative energy-transfer-mediated oxygen activation system on PCN-224-Zn is proposed for selective singlet oxygen generation without the need of electron-hole separation. The as-prepared PCN-224-Zn exhibits remarkable singlet triggered photocatalytic E-coli inactivation and organic pollutant degradation performance. The enhanced photocatalytic activity is attributed to the introduction of Zn into the metal-organic frameworks (MOFs) that facilitates the transformation of electron-hole couple from singlet to triplet state for selective singlet oxygen generation with high efficiency. This work provides a new oxygen activation pathway for efficient and selective ROS generation without the need of electron-hole separation.
研究领域:
环境科学
·
材料科学
·
化学工程
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）