Hydrolytically stable Cu Zn bimetallic metal organic framework as a dual-Analyte fluorescent probe for selective detection of Metronidazole and Ceftriaxone

Transformation of metal organic frameworks into mono and bimetallic metal oxides for photocatalysis process: a review

Conductive bimetallic metal–organic framework enforced electrochemical biosensor for high-performance monitoring Escherichia coli O157:H7 in animal derived food

An electrochemical sensor based on bimetallic metal organic framework-nitrogen-doped graphene modified screen-printed carbon electrodes for sensitive detection of melanoma marker tyrosinase

Green ultrasensitive electrochemical sensor modified with a bimetallic metal–organic framework for the detection of levofloxacin in different matrices

Manganese-based cathodes offer high capacity, low cost, and safety for aqueous zinc-ion batteries (AZIBs), yet suffer from Mn dissolution, Jahn–Teller distortion, and sluggish Zn2+ kinetics. Herein, a Zn/Co co-doped MnO nanoporous carbon composite (denoted as ZnCo-MnO@NPC) derived from a bimetallic ZnCoMn metal–organic framework (ZnCoMn-MOF-74) is successfully synthesized and proposed as a high-performance cathode to address these challenges. The introduction of Zn2+ increases the initial specific capacity of MnO, while Co doping effectively suppresses the Jahn–Teller distortion and improves the integrity of the structure. Furthermore, the nanoporous carbon matrix facilitates electrolyte infiltration and accelerates ionic transport. To further suppress dendrite growth and enhance cycling stability, a zeolitic imidazolate framework (ZIF-8) protective layer is engineered on the zinc anode (denoted as ZIF-8@Zn), effectively mitigating dendrite formation. The ZnCo-MnO@NPC//ZIF-8@Zn full cell demonstrates superior electrochemical performance, delivering 281.3 mAh g−1 at 0.1 A g−1 and retaining 98.7% of this value after 3500 long-term cycles at 2.0 A g−1, a remarkable finding that underscores its potential for high-performance energy storage. Collectively, this work highlights that transition metal ion doping represents an effective way to design efficient high-performance MOF-derived cathodes of AZIBs.

Ethanol Upgrading to Jet Fuel Precursors over Ni/MgO@C Catalysts Derived from Bimetallic Metal–Organic Frameworks

ABSTRACT A new series of proton exchange membranes (PEMs) was fabricated by incorporating an optimized amount of amino-functionalized bimetallic NiCo metal organic frameworks (MOF) into a sulfonated polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (SPSEBS) matrix through a solvent-casting method. The SPSEBS polymer was obtained by the sulfonation of the PSEBS polymer using chlorosulfonic acid as the sulfonating agent. Functionalized NiCoMOF was synthesized via a solvothermal approach. SPSEBS shows high proton conductivity due to –SO3H groups, along with good film-forming ability and flexibility. Amino-functionalized MOFs enhance proton transport via acid–base interactions, creating hybrid membranes with synergistic effects and improved conductivity through additional proton hopping pathways via Grotthuss mechanism. Structural and morphological analyses using FT-IR, XRD, and SEM confirmed the successful incorporation and uniform dispersion of the NiCo MOF within the SPSEBS matrix. The physical and electrochemical properties of the composite membranes were evaluated, including water uptake, swelling ratio, ion-exchange capacity, and proton conductivity. While the pristine SPSEBS membrane exhibited a proton conductivity of 8.7 mS cm−1, the incorporation of 3 wt% bimetallic NiCo MOF significantly enhance the proton conductivity to 23.7 mS cm−1, demonstrating the effectiveness of MOF incorporation in improving PEM performance.

Metal ion interference therapy disrupts ion homeostasis to stimulate immunity, but the underlying mechanisms remain poorly elucidated. Here, a hydrazide hyaluronan-decorated copper/zinc disruptor is constructed to inhibit tumoral energy metabolism and activate anticancer immunity. Functionally, Zn2+ acts as a metabolic inhibitor to suppress glycolysis by directly restraining lactate dehydrogenase activity and downregulating the PI3K/Akt/HIF-1α axis, thus reducing lactate output and limiting adenosine triphosphate generation. In parallel, Cu2+ triggers cuproptosis via mitochondrial proteotoxicity and lipoylated protein aggregation, thereby blocking the flux of pyruvate into the tricarboxylic acid cycle and aggravating energy exhaustion. This metabolic collapse forms a mechanistic cascade, in which glycolytic inhibition predisposes cells to cuproptotic stress, while cuproptosis further reinforces pyroptotic activation. Ultimately, ion overload, severe energy deficit, and subsequent oxidative perturbation cooperatively amplify pyroptosis-driven inflammatory cytokine release and establish a synergistic metal ion-induced immunogenic cell death pathway. In vitro studies reveal that the anticancer activity of the disruptor involves oxidative stress, mitochondrial dysfunction, and inflammatory responses. In vivo studies demonstrate that it efficiently suppresses primary and distant tumor growth and activates systemic immunity. Collectively, this bimetallic disruption strategy bridges metal therapy with immunotherapy, provides insights into the underlying molecular mechanisms, and highlights the potential of metal-based nanomedicine for tumor immunotherapy.

Sunlight-driven photocatalytic degradation of methyl orange dye using a Co Gd bimetallic metal organic framework for environmental remediation

Neodymium/zirconium bimetallic metal–organic framework for heavy rare earth lutetium(iii): adsorption performance and mechanism study

Chitosan hydrogel supported Fe Co bimetallic metal organic framework for efficient peroxymonosulfate activation: levofloxacin degradation and catalytic mechanism

Low-temperature (including room-temperature) gas sensors are crucial for energy-efficient and safe detection applications. In this study, we report the synthesis of In2O3-sensitized NiO nanoparticles (NPs) for NO2 detection. The NiO/In2O3 hybrid materials were obtained by pyrolysis of Ni/In bimetallic metal–organic framework (MOF) nanosheets (NSs) fabricated through ultrasonic synthesis and cation exchange. Gas sensing tests revealed that the In2O3 sensitization significantly enhances the NO2 sensing performance of NiO, enabling a response of 1.5 at room temperature (RT) and an optimal response at 100 °C. The NiO/In2O3 sensor demonstrates enhanced selectivity toward NO2, an ultra-low detection limit (41 ppb), and long-term stability. This study presents an effective MOF-derived route for developing high-performance low-power gas sensors.

Lithium–sulfur batteries (LSBs) have attracted significant attention as next-generation secondary batteries owing to their outstanding theoretical energy density. Nevertheless, the practical application of sulfur cathodes is hindered by intrinsic challenges, including low electronic conductivity, severe polysulfide shuttle effects, and sluggish redox kinetics, which collectively induce rapid capacity fading and poor rate capability, significantly hindering the progress of LSBs. Bimetallic catalysts have been regarded as promising electrocatalysts for lithium–sulfur batteries due to their ability to chemically interact with polysulfide and promote its kinetic conversion. Composites exhibiting synergistic effects from binary metal nanoparticles typically demonstrate superior catalytic performance compared to conventional single-metal particles. In this work, taking advantage of a bimetallic metal–organic framework (MOF), we synthesized spherical entanglement structures by intertwining iron–nickel alloy particles with carbon nanotubes (FeNi/CNT). This distinctive structural configuration offers a rich diversity of adsorption and catalytic active sites, while the porous carbon architecture further boosts its electrical conductivity. Electrochemical testing of the FeNi/CNT/S cathode showed a first discharge capacity of 963.43 mAh g–1 at a current density of 0.5C, with a remaining capacity of 464.58 mAh g–1 following 800 cycles. In brief, FeNi/CNT accelerates the polysulfide conversion and enables the high efficiency of LSBs.

Sub-wavelength light confinement at surface plasmon resonance in refractory transition metal nitrides (TiN, ZrN) and their bimetallic system [P-SiO2-Q (P = ZrN/TiN and Q = TiN/ZrN)]-based gain-assisted nanomatryoshka (metal–dielectric-metal) has emerged as an effective platform for developing low threshold SPASER (Surface Plasmon Amplification by Stimulated Emission of Radiation) and ultrafast tunable optical-switches. The present manuscript focuses on (I) examining surface plasmon amplification, tunable optical switching and SPASER characteristics in gain-assisted nanomatryoshka, (II) excitation of hybridized modes by using suitable bimetallic composition of ZrN and TiN, (III) optimizing low and comparable gain requirements for different hybridized modes. The analysis based on quasistatic theory at resonant conditions predicts that the absorption cross-section will be maximum (negative) and the corresponding scattering cross-section should be switched from ultra-high to ultra-low value at the critical gain at dielectric sandwich layer. Gain requirements for the bimetallic combination ZrN–SiO2–TiN are 0.84721 at λ R = 733 nm (lasing mode) and 0.74186 at λ R = 507.1 nm (pumping mode). The nearly equal gain requirement for excitation of low- and high-energy modes in optimized ZrN-SiO2-TiN, respectively lead to the realization of a low-cost and low-threshold nanolaser. In the current design, stilbene chromophore is proposed as a gain material, which offers broad fluorescence tunability (∼125 nm) and a remarkably large Stokes shift (∼227 nm) in DMSO. The current investigation can lead to the accomplishment of efficient, low-cost tunable optical-switching and SPASER structures/devices.

Despite the large relevance of bimetallic metal nanoparticles for heterogeneous catalysis, the relation between their shape and elemental composition remains elusive. Here, we investigate this relationship by implementing and applying global optimization methods enhanced with an efficient optimal-exchange algorithm. In particular, we determine the lowest energy chemical orderings for PtAu nanoparticles, revealing that the most stable shape changes from highly symmetric structures for pure particles to distorted and less symmetric shapes for intermediate compositions. The presented method leverages the local atomic contributions to an empirical surrogate energy expression to identify optimal atom exchanges. This also allows us to pinpoint the origin of the stability of distorted shapes, revealing a favorable energy trade-off when over-coordinating Pt and under-coordinating Au upon distorting the particle shape.

Photocatalysis based on peroxymonosulfate (PMS) activation has shown great potential in environmental remediation, and photocatalysts containing transition-metal active sites can efficiently activate PMS. However, under-utilizing metal active sites results in limiting catalytic efficiency. To overcome this problem, this work developed bimetallic metal-organic framework-derived metal oxide-loaded nitrogen-doped carbon Z-scheme heterojunction photocatalysts to achieve PMS activation synergistic photoexcitation by an interface electric field. Benefiting from multiple synergistic reaction pathways, the tetracycline degradation rate was significantly accelerated. Experiments and density functional theory calculations supported the hypothesis that the bimetallic oxide activated the adsorption energies of PMS through electron rearrangement, contributing to the generation of reactive oxygen species. The metastable PMS adsorbed on the surface of the photocatalysts can modify the surface potential, further improving charge carrier separation. Meanwhile, the "contaminant-metal-oxidant" coordination mode at the metal center facilitates O-O bond of PMS cleavage, driving a dominant 1O2 generation via nonradical electron-transfer pathways. This work deepens the knowledge of design strategies for efficient photocatalysis in enhancing heterogeneous catalysis water purification processes.

ABSTRACT Developing efficient and stable photocatalysts for solar‐driven hydrogen production is fundamentally limited by inefficient charge separation and weak electronic coupling between active sites, particularly in bimetallic metal–organic frameworks (MOFs). Here, we address these challenges by introducing phosphorus into a bimetallic cobalt–zinc MOF constructed from 2‐methylimidazole, aiming to electronically couple dual‐metal centers and simultaneously optimize surface reaction kinetics. The optimized P‐modified Co–Zn MOF achieves a high hydrogen evolution rate of 4099 µmol·h −1 ·g −1 under visible‐light irradiation, corresponding to an approximately sixfold enhancement over the pristine material, together with excellent cycling stability. Mechanistic studies reveal that phosphorus incorporation reconstructs the local electronic environment of Co and Zn centers, forming P‐bridged bimetallic motifs that promote efficient photogenerated charge separation and accelerate interfacial charge transfer. In parallel, the phosphorus‐mediated electronic modulation optimizes proton adsorption and hydrogen‐reduction kinetics, enabling a synergistic improvement in photocatalytic performance. This work demonstrates that electronic‐structure regulation via phosphorus provides an effective solution to the long‐standing challenge of activating bimetallic synergy in MOF‐based photocatalysts, offering new insights into the rational design of high‐performance systems for photocatalytic hydrogen evolution.

In the context of the ongoing renewable energy transition, ammonia has been recognized as a promising hydrogen carrier, enabling hydrogen production via ammonia decomposition. This perspective focuses on the bimetallic transition catalysts in ammonia decomposition. Firstly, it outlines various approaches for the design of bimetallic catalysts, including alloying Ru with non-noble transition metals, Mo-based bimetallic nitrides, combining Fe with transition metal showing low nitrogen binding energy. Consequently, the alloyed FeCo bimetallic catalyst exhibits an optimized nitrogen binding energy (closet to Ru), which facilitates the recombinative N2 desorption while suppressing the migration of nitrogen into the bulk of alloy, resulting in a high catalytic performance. Combining Ru with non-noble metals such as Ni, Fe, Co, etc. to fabricate a highly active bimetallic catalyst for ammonia decomposition has been summarized. Then the importance of advanced kinetic studies for the reaction mechanism investigation is emphasized inside. Perspectives for the future research on the fundamental understanding of intrinsic structure-performance relationship for bimetallic catalysts design is discussed.

Copper (Cu), silver (Ag), and copper–silver (Cu–Ag) powders were synthesized using ultrasonic spray pyrolysis (USP) combined with hydrogen-assisted reduction in order to examine how key processing parameters influence particle characteristics. The effects of reduction temperature, gas atmosphere, and precursor molar ratio on particle morphology, size distribution, and elemental composition were systematically investigated. Aqueous precursor solutions of copper nitrate trihydrate and silver nitrate were atomized in a USP reactor and thermally treated under hydrogen-containing or argon atmospheres at temperatures between 500 and 700 °C. The resulting powders were characterized by scanning electron microscopy (SEM), particle size analysis using ImageJ, and energy-dispersive X-ray spectroscopy (EDS). The results showed that both temperature and gas atmosphere strongly affected particle formation. Hydrogen-assisted synthesis promoted efficient reduction and high metal purity but was associated with increased particle coalescence, whereas argon atmospheres yielded finer and more uniform particles through thermally driven decomposition. In the case of Cu–Ag powders, the precursor molar ratio played a decisive role in particle stability. A 1:1 Cu:Ag ratio produced uniform particles with reduced susceptibility to surface oxidation, while Ag-rich compositions (1:3 Cu:Ag) showed increased agglomeration and partial oxidation after synthesis. Overall, this study demonstrates that careful adjustment of gas atmosphere, synthesis temperature, and precursor composition enables control over the morphology and compositional stability of Cu, Ag, and Cu–Ag powders produced by USP. These findings provide practical guidance for the scalable preparation of mono- and bimetallic metal powders for applications in electronics, catalysis, and energy-related technologies.