MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 9
·1-15
·
IF 5.3
Guo Jieli,Li Jin,Xing Xiujing,Xiong Wei,Li Hao
As an ideal transition metal oxide, Co 3 O 4 is a P-type semiconductor with excellent electrical conductivity, non-toxicity and low cost. This work reports the successful construction of Co 3 O 4 materials derived from metal-organic frameworks (MOFs) using a surfactant micelle template-solvothermal method. The modified electrodes are investigated for their ability to electrochemically detect Pb 2+ and Cu 2+ in aqueous environments. By adjusting the mass ratios of alkaline modifiers, the morphological microstructures of Co 3 O 4 -X exhibit a transition from distinctive microspheres composed of fiber stacks to rods. The results indicate that Co 3 O 4 -1(NH 4 F/CO(NH 2 ) 2 = 1:0) has a distinctive microsphere structure composed of stacked fibers, unlike the other two materials. Co 3 O 4 -1/GCE is used as the active material of the modified electrode, it shows the largest peak response currents to Pb 2+ and Cu 2+ , and efficiently detects Pb 2+ and Cu 2+ in the aqueous environment individually and simultaneously. The linear response range of Co 3 O 4 -1/GCE for the simultaneous detection of Pb 2+ and Cu 2+ is 0.5–1.5 μM, with the limits of detection (LOD, S/N = 3) are 9.77 nM and 14.97 nM, respectively. The material exhibits a favorable electrochemical response, via a distinctive Co 3 O 4 -1 microsphere structure composed of stacked fibers. This structure enhances the number of active adsorption sites on the material, thereby facilitating the adsorption of heavy metal ions (HMIs). The presence of oxygen vacancies (O V ) can also facilitate the adsorption of ions. The Co 3 O 4 -1/GCE electrode also exhibits excellent anti-interference ability, stability, and repeatability. This is of great practical significance for detecting Pb 2+ and Cu 2+ in real water samples and provides a new approach for developing high-performance metal oxide electrochemical sensors derived from MOFs. Graphical abstract
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CATALYSIS LETTERS
·
2025
·Vol. 155
·期 2
·1-15
·
IF 2.4
Li Ziyuan,Luo Mingsheng,Yang Zhi,Cui Xiaoteng,Yang Wenshuai,Xia Lingman,Shao Changke,Rahman Roshni
To effectively mitigate the global warming issue, it is crucial to develop advanced technologies that can significantly reduce carbon dioxide emissions. CO 2 hydrogenation for methanol synthesis is increasingly recognized as a promising chemical approach for the green-house gas utilization. In this study, we present a highly active, selective and stable Mo modified ZnCu-MOF and ZnCuAl-LDH composite catalysts, which achieves 18% CO 2 conversion and 70% methanol selectivity at 230 °C, 3.0 MPa at a space velocity of 3600 mL·g cat −1 ·h −1 . Furthermore, after 140 h of operation, the catalyst demonstrates superior durability. In-situ DRIFT results reveal that this CO 2 hydrogenation reaction over the ZnCu-MOF and ZnCuAl-LDH composite catalysts proceeds through key intermediate formate species, ultimately leading to the methanol formation. In contrast, the Mo-modified catalysts facilitate the CO insertion reaction (CO 2 → CO*, CO* + *CH x → CH 3 OH), thereby enhancing the methanol yield. Graphical
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Catalysts
·
2024
·Vol. 14
·期 12
·929
·
IF 3.8
Jingxin Tan,Mengqi Li,Lingtao Liu,Lijian Wang,Haocun Wang,Junjie Bian,Chunhu Li
Biomass platform compound 5-Hydroxymethylfurfural (HMF), with its low price and abundant source, can be used as a renewable resource to replace traditional petrochemicals. MOF-808(Zr) has tunable active sites and excellent stability under high temperatures and acidic as well as basic environments, and the unsaturated coordination of metal ions within its framework structure can exhibit Lewis acidity, facilitating catalytic transfer hydrogenation from HMF to 2, 5-Furandimethanol (BHMF). The hydrothermal–impregnation–reduction method was used to prepare Cu/MOF-808 catalysts with high catalytic performance. Formic acid was chosen as the hydrogen donor solvent. The selectivity and yield of BHMF were 75.65% and 71%, respectively, at 150 °C for 4 h. A reaction pathway for the catalytic hydrogen transfer of HMF to BHMF was proposed. The high activity and stability of the Cu/MOF-808 catalyst with dual active sites provide a viable method for feasible hydrogenation of HMF to high value-added compounds.
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INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Mingwei Yuan,Shunli Shi,Shiqian Chen,Bingzhen Zhang,Weiming Xiao,Chao Chen
Mixed-matrix membrane (MMM) reactors incorporating metal–organic framework (MOF) fillers have significant applications in fields such as separation, catalysis, and chiral resolution. However, the traditional method of directly mixing MOF fillers with polymers results in a symmetric structure where most of the MOF fillers are uniformly distributed across the membrane reactor’s cross-section. During usage, this leads to a pronounced trade-off between flux and efficiency and the waste of the MOF, as the rich pore characteristics and active sites of MOFs are not fully utilized. In this study, we propose a liquid-phase ion activation strategy that enables the in situ formation of a uniform and densely packed MOF shell layer on the membrane surface during the phase inversion process of MMM fabrication. This asymmetric density distribution of the MOF-based MMM reactor selectively induces the generation of considerable nonradical 1O2 in the peroxomonosulfate (PMS) system, demonstrating superior catalytic degradation performance against antibiotics like TC and dye molecules (with a flux of 1880 L m–2 h–1 and a Kapp value of 648 min–1), as well as outstanding cycling stability and environmental tolerance. This discovery sheds light on the design and engineering of composite membrane materials and applications for advanced oxidation processes in water purification.
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INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Xue Ye,Chenxi Bai,Peipei Zhang,Fuyuan Han,Junyu Xia,Xinhua Gao,Wenlin Xu,Lisheng Guo,Jie Li
Metallic atoms within metal–organic framework (MOF) materials exhibit a distinctive and adaptable coordination structure. The three-dimensional (3D) pore configuration of MOFs enables the complete exposure of metal active sites, rendering them prevalent in various catalytic reactions. In this study, zinc (Zn) atoms within Zn-based MOF materials, characterized by an abundance of valence electrons, are utilized for the transesterification of dimethyl carbonate (DMC). Additionally, the introduction of zirconium (Zr) effectively addresses the susceptibility of the MOFs’ crystal structure to dissolution in organic solvents. The formulated catalyst, Zn-10%Zr-MOF(300), demonstrates remarkable catalytic performance with 91.5% DMC selectivity, 61.9% propylene carbonate (PC) conversion, and 56.6% DMC yield. Impressively, the catalyst maintains its high performance over five cycles. Results indicate that Zr interacts with Zn, forming new coordination bonds and enhancing the catalyst crystal structure stability. Moreover, electron transfer intensifies the alkalinity of the active Zn atoms, enhancing the overall catalyst performance. This research informs the development of transesterification heterogeneous catalysts and broadens the application scope of MOF catalysts.
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Separations
·
2024
·Vol. 11
·期 12
·356
·
IF 2.5
Zhaowei Wu,Meiyi Hu,Pengfan Zhuo,Jie Wang,Shaoping Tong
A composite Fe-MOF-C/N was prepared with Fe-MOF and g-C3N4precursors, and its activation property of peroxymonosulfate (PMS) in the degradation of Sulfamethoxazole (SMX) was studied. XRD, SEM, and TEM analyses showed that Fe-MOF-C/N was porous and mainly composed of phases of Fe3N, C0.08Fe1.92, and graphite. XPS indicated that Fe-MOF-C/N mainly had Fe, C, N, and O elements, among which Fe existed in the form of Fe2+and Fe3+. Fe-MOF-C/N was used to activate PMS to degrade SMX, and the result showed that Fe-MOF-C/N had excellent catalytic performance and 84.17% of SMX could be removed in 8 min. Free radical quenching experiments showed that1O2was the main active species in Fe-MOF-C/N/PMS. The stability experiment showed that Fe-MOF-C/N had good stability, and the degradation rate of SMX only decreased by 5.8% after five times of use.
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Advanced Composites and Hybrid Materials
·
2025
·Vol. 8
·期 1
·1-18
·
IF 21.8
Chang Yu,Huang Kexin,Tang Han,Yao Yuwei,Min Jie,Quan Hong,Xu Kai,Wang Hongbo,Zhang Jiaming,Zhao Yingchao
Radiation therapy (RT) remains the primary treatment modality for advanced cervical cancer, however, recurrence due to radioresistance presents a significant challenge. Cancer-associated fibroblasts (CAFs) within the tumor microenvironment (TME) are key contributors to this resistance, driven by their inherent radioresistance and radiation-induced phenotypic adaptations. Addressing this issue requires strategies specifically designed to target CAFs and enhance their radiosensitivity. In this study, we developed a biomimetic metal–organic framework (MOF) nanoplatform for the dual-targeted co-delivery of the FAK inhibitor IN10018 and Bismuth (Bi), aimed at improving radiosensitivity in cervical cancer. The IN10018 and Bi-loaded zeolitic imidazolate framework 8 (ZIF-8) nanoparticles (IZB) were further coated with hybrid membranes derived from CAFs and cancer cells, enabling precise targeting of both cell types. Upon exposure to an acidic environment, the nanoparticles disassemble, releasing IN10018, which reduces CAFs infiltration and enhances radiosensitivity. Simultaneously, the incorporation of Bi enhances radiation absorption efficiency, further sensitizing tumor cells to radiotherapy. This dual-target strategy represents a promising approach to overcoming radioresistance in cervical cancer and exemplifies how integrating nanotechnology with targeted therapies can enhance RT efficacy and improve patient outcomes. Graphic Schematic Illustration of IZB@CCM Construction and Application for Cervical Cancer to Improve Radiosensitivity. (1) IZB was fabricated through the one-pot method. (2) Preparation of hybrid CAF-cancer cell membrane. (3) IZB@CCM were obtained by co-extrusion of IZB and hybrid membrane (CCM). (4) IZB@CCM demonstrated the ability to target CAFs and cancer cells. (5) IZB@CCM inhibited the expression of FAK and released radiosensitizer Bi to enhance the radiosensitivity of cervical cancer.
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Acta Biomaterialia
·
2024
·
IF 9.4
Guangli Xiang,Bingjie Wang,Wenshang Zhang,Yu Dong,Jiaojiao Tao,Aijia Zhang,Rui Chen,Tianze Jiang,Xia Zhao
Diabetic wound healing is a great clinical challenge due to the microenvironment of hyperglycemia and high pH value, bacterial infection and persistent inflammation. Here, we develop a cascade nanoreactor hydrogel (Arg@Zn-MOF-GOx Gel, AZG-Gel) with arginine (Arg) loaded Zinc metal organic framework (Zn-MOF) and glucose oxidase (GOx) based on chondroitin sulfate (CS) and Pluronic (F127) to accelerate diabetic infected wound healing. GOx in AZG-Gel was triggered by hyperglycemic environment to reduce local glucose and pH, and simultaneously produced hydrogen peroxide (H 2 O 2 ) to enable Arg to release nitric oxide (NO) for inflammation regulation, providing a suitable microenvironment for wound healing. Zinc ions (Zn 2+ ) released from acid-responsive Zn-MOF significantly inhibited the proliferation and biofilm formation of S.aureus and E.coli . AZG-Gel significantly accelerated diabetic infected wound healing by down-regulating pro-inflammatory tumor necrosis factor (TNF)-α and interleukin (IL)-6, up-regulating anti-inflammatory factor IL-4, promoting angiogenesis and collagen deposition in vivo . Collectively, our nanoreactor cascade strategy combining “endogenous improvement (reducing glucose and pH)” with “exogenous resistance (anti-bacterial and anti-inflammatory)” provides a new idea for promoting diabetic infected wound healing by addressing both symptoms and root causes. Statement of Significance A cascade nanoreactor (AZG-Gel) is constructed to solve three key problems in diabetic wound healing, namely, hyperglycemia and high pH microenvironment, bacterial infection and persistent inflammation. Local glucose and pH levels are reduced by GOx to provide a suitable microenvironment for wound healing. The release of Zn 2+ significantly inhibits bacterial proliferation and biofilm formation, and NO reduces wound inflammation and promotes angiogenesis. The pH change when AZG-Gel is applied to wounds is expected to enable the visualization of wound healing to guide the treatment of diabetic wound. Our strategy of “endogenous improvement (reducing glucose and pH)” combined with “exogenous resistance (anti-bacterial and anti-inflammatory)” provides a new way for promoting diabetic wound healing.
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CHEMISTRY-A EUROPEAN JOURNAL
·
2024
·
IF 3.9
Siyu Jiang,Wenjuan Han,Luan Fang,Shu Zhang,Xiangxin Xue,Ping Nie,Bo Liu,Cuimei Zhao,Ming Lu,Limin Chang
Graphical Base on the combination of co-precipitation method and carbonization, the architecture of non-interfacial blocking manganese oxides and amorphous carbon hybrid materials are synthesized. MOF-derived hybrid electrodes obtained a specific capacity of 132.6 mAh g −1 under 2 A g −1 , and it still has a specific capacity of 105 mAh g −1 at 1 A g −1 for 2000 cycles. In addition, the electrode reaction mechanism of MOF-derived hybrid electrodes in ZIBs is analyzed by ex-situ XRD and in-situ Raman tests and the model battery is assembled to present practical possibilities. This study provides an innovation strategy for efficient electron ion transport of Mn-based materials, and offers a route to the practical electrode of ZIBs. How to coordinate electron and ion transport behavior across scales and interfaces within ion battery electrodes? The exponential increase in surface area observed in nanoscale electrode materials results in an incomprehensibly vast spatial interval. Herein, to address the problems of volume expansion, dissolution of cathode material, and the charge accumulation problem existing in manganiferous materials for zinc ion batteries, metal organic framework is utilized to form the architecture of non-interfacial blocking ~10 nm Mn 2 O 3 nanoparticles and amorphous carbon hybrid electrode materials, demonstrating a high specific capacity of 361 mAh g −1 (0.1 A g −1 ), and excellent cycle stability of 105 mAh g −1 after 2000 cycles under 1 A g −1 . The uniform and non-separated disposition of Mn and C atoms constitutes an interconnected network with high electronic and ionic conductivity, minimizing issues like structural collapse and volume expansion of the electrode material during cycling. The cooperative insert mechanism of H + and Zn 2+ are analyzed via ex-situ XRD and in-situ Raman tests. The model battery is assembled to present practical possibilities. The results indicate that MOF-derived carbonization provides an effective strategy for exploring Mn-based electrode materials with high ion and electron transport capacity.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Tingting Li,Yukun An,Jiashuang Li,Zhiming Zhang,Lin Liu,Libao An
A bimetallic Ln-MOF nanofibrous membrane (NFM) was successfully fabricated by in situ growth of Eu/Tb-MOF crystals onto electrospun polycaprolactam (PA6) nanofibers . For better combining with PA6 nanofibers , the Eu/Tb-MOFs were made into nanocrystals . Characterization with PXRD , FT-IR, EDS and XPS confirmed that the crystal structure of the Eu/Tb-MOFs maintained well on PA6 NFM. The as-prepared Eu/Tb-MOF@PA6 NFM can be used as a colorimetric fluorescent test strip for instant detection of the volume ratio of 1, 4-dioxane in 1, 4-dioxane-glycol mixture. With the increase of 1, 4-dioxane, the test strip presented color changes from green to red, which can be easily distinguished by the naked eye. In view of this, the conversion rate of the condensation reaction of glycol to 1, 4-dioxane will be preliminarily estimated without the help of equipment. More importantly, the test strip exhibited better convenience and reversibility compared with powdered Ln-MOFs because no separation process was needed for test strip before and after recovering. Benefiting from sufficient amide groups in PA6 for anchoring Eu/Tb-MOF particles, the test strip showed satisfactory stability in cycling experiments. This work will provide a new insight into the development of fluorescent test strip based on electrospun MOF NFM for quantitatively monitoring the reaction process.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Hongyang Ma,Wen Zhang,Kun Yang,Zonglinsong Liu,Wanwan Zhang
Electrospun nanofiber membranes functionalized with metal-organic framework (MOF) are considered as a promising materials for removal contaminants from wastewater. In this study, a bottom-up approach was proposed for the preparation bimetallic MOF based polyacrylonitrile (PAN) electrospun nanofiber membranes. Polydopamine (PDA)-modified PAN nanofiber membranes increased the anchoring of Co/Zn-MOF nanoparticles, further leading to the formation of Co/Zn-MOF@PDA-PAN nanofiber membranes with secondary growth method. With the increasing of 2-MIM concentration, the surface roughness and hydrophilicity of Co/Zn-MOF@PDA-PAN exhibited the increasing tendency. In addition, the antibacterials rates of Co/Zn-MOF@PDA-PAN were 59.6% and 64.9% against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) after 1h, rising to over 99.9% after 24h, demonstrating rapid and effective antibacterial activity. Importantly, membranes showed excellent anti-adhesion properties against two experimental strains. The release of ROS from Co/Zn-MOF could disrupt bacterial physiological activities, leading to their death, which could be the primary antibacterial mechanism of nanofiber membranes. The adsorption isotherm of MOF@PAN was characterized by the Langmuir model, showing a maximum adsorption capacity of 564 mg/g for SY, while kinetic data were best fitted with the pseudo-second-order model. The bimetallic MOF-based nanofiber membranes will be an effective and promising materials for antibacterial applications and water purification.
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JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Haseebul Hassan,Khakemin Khan,Sidra Mumtaz,Arslan Ahmed Rafi,Ahmed Mahmoud Idris,Ahmed Althobaiti,Alsharef Mohammad
Supercapacitors represent a promising avenue for advanced energy storage solutions. However, achieving devices that simultaneously possess all the ideal properties, such as high capacitance, fast charge-discharge rates, and excellent cyclability, remains a significant challenge. Herein, a facile approach for fabricating carbon aerogel-induced chromium metal-organic framework (CA@MIL-101) integrated with titanium carbide MXene (CA@MIL-101-(Cr)/Ti 3 C 2 T x ) nanocomposites was demonstrated via hydrothermal method. The CA@MIL-101-(Cr)/Ti 3 C 2 T x nanocomposites offer numerous divalent ion active sites and significantly improve charge transfer kinetics, attributed to their interconnected porous structure. This novel anode exhibits an outstanding specific capacity of 1632 Cg -1 with a PVDF binder-based electrode and a high rate of performance. Moreover, a full-cell supercapacitor was developed with carbon aerogel as the cathode and CA@MIL-101 (Cr)/Ti 3 C 2 T x as the anode. With its hierarchical pore structure and functional groups, the CA@MIL-101 (Cr)/Ti 3 C 2 T x anode achieves an energy density of 38 Wh-kg −1 , a high-power density of 1280 W-kg −1 , and robust anti-self-discharge behavior. The CA@MIL-101 (Cr)/Ti 3 C 2 T x //CA supercapattery uses both adsorption/desorption processes and faradaic reactions for charge storage. The synthesized materials also perform exceptionally well electro-catalytically. This research advances high-performance CA@MIL-101 (Cr)/Ti 3 C 2 T x electrodes, enhances understanding of supercapacitor charge storage, and paves the way for next-generation energy storage technologies.
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