MOF-derived Materials Research Articles

MOF-derived 3D interconnected amorphous carbon nanowire networks for robust lithium storage

MOF-derived amorphous carbon-based materials has exhibited great potential for lithium-ion batteries (LIBs) with exceptional gravimetric capacity cycle stability. However, it is a great challenge to realize morphology control during the transformation process from MOF to carbon derivatives for obtaining electrode materials with superior rate performance and capacity retention rate under long cycle and high current density. Herein, through combining rapid heat and linker removing processes, a 3D interconnected amorphous carbon nanowire networks with developed hierarchical pores were prepared from sub-micron brick-like crystal Al-MOF. The 3D amorphous carbon with high specific surface area can provide substantial active sites for lithium storage, the interconnected nanowire networks can facilitate fast electron conduction, and the developed hierarchical pores can promote ion transport; therefore, the 3D amorphous carbon electrode exhibits superior rate performance and delivers an capacity as high as 400 mAh/g under the current density of 1.0 A/g even after 1000 cycles with an ultra-high-capacity retention rate of 101.8%, considerably outperforming other carbon derivatives derived from different types of MOF. The effective preparation method for morphology control and superior lithium storage performance represents a critical step toward capturing the full potential of MOF-derived carbon electrode materials in practical LIBs applications.

A Novel Instantaneous Self-Assembled Hollow MOF-Derived Nanodrug for Microwave Thermo-Chemotherapy in Triple-Negative Breast Cancer.

Hollow materials derived from metal-organic frameworks (MOFs) have emerged in the biomedical field due to their unique properties, and different synthesis methods have been proposed. However, so far, the large-scale use of hollow MOFs is mostly limited by the timeliness of synthesis methods. Herein, we propose a new ultrasonic aerosol flow strategy for the instantaneous synthesis of a Zr-MOF-derived hollow sphere complex (ZC-HSC) in only one step. Through rapid transient heating, the coordination between metal salts and organic ligands occurs along with prompt evaporation of the solvent. The whole process lasts for only about 21 s, compared with several steps that take hours or even days for conventional synthesis methods. Based on the ZC-HSC, we designed a nanodrug with the functions of manipulating the tumor microenvironment, which can reshape the tumor microenvironment by improving tumor hypoxia and inflammatory microenvironment and promoting antiangiogenic therapy. Combined with microwave thermo-chemotherapy, the nanodrugs effectively treat triple-negative breast cancer (the tumor cell survival rate was only 34.76 and 31.05% in normoxic and hypoxic states, respectively, and the tumor inhibition rate reached 87.9% at the animal level), providing a new theoretical basis for the treatment of triple-negative breast cancer. This rapid, one-step, and continuous ultrasonic aerosol flow strategy has bright prospects in the synthesis of MOF-derived hollow materials and promotes the further development of large-scale applications of biological nanomaterials.

MOFs and MOF-Derived Materials for Antibacterial Application.

Bacterial infections pose a serious threat to people's health. Efforts are being made to develop antibacterial agents that can inhibit bacterial growth, prevent biofilm formation, and kill bacteria. In recent years, materials based on metal organic frameworks (MOFs) have attracted significant attention for various antibacterial applications due to their high specific surface area, high enzyme-like activity, and continuous release of metal ions. This paper reviews the recent progress of MOFs as antibacterial agents, focusing on preparation methods, fundamental antibacterial mechanisms, and strategies to enhance their antibacterial effects. Finally, several prospects related to MOFs for antibacterial application are proposed, aiming to provide possible research directions in this field.

The Advanced Synthesis of MOFs-Based Materials in Photocatalytic HER in Recent Three Years

Since the advent of metal–organic frameworks (MOFs), researchers have paid extensive attention to MOFs due to their determined structural composition, controllable pore size, and diverse physical and chemical properties. Photocatalysis, as a significant application of MOFs catalysts, has developed rapidly in recent years and become a research hotspot continuously. Various methods and approaches to construct and modify MOFs and their derivatives can not only affect the structure and morphology, but also largely determine their properties. Herein, we summarize the advanced synthesis of MOFs-based materials in the field of the photocatalytic decomposition of water to produce hydrogen in the recent three years. The main contents include the overview of the novel synthesis strategies in four aspects: internal modification and structure optimization of MOFs materials, MOFs/semiconductor composites, MOFs/COFs-based hybrids, and MOFs-derived materials. In addition, the problems and challenges faced in this direction and the future development goals were also discussed. We hope this review will help deepen the reader’s understanding and promote continued high-quality development in this field.

In situ construction of SnO-NiO derived from metal-organic frameworks on nickel foam for energy storage devices

Background: Metal-organic frameworks (MOFs) have concerned substantial research attention as potential electrode materials in the field of electrochemical storage owing to their high porosity. However, their low cycling stability and rapid capacity fading hinder the practical application of MOFs because of the structural instability of the electrodes during cycling. Existing studies have shown that MOF-derived materials are helpful in improving their performance due to controllable functionalities, permanent porosities, and high surface area.Methods: We demonstrated an efficient strategy to solve these problems by combining the beneficial redox properties of Sn and Ni metal precursor and benzene-1,3,5-tricarboxylate (BTC) organic linker. SnONiO derived from Sn-Ni MOFs were in situ deposited on nickel foam (i.e., Sn-Ni MF@Ni nanostructures) by solvo-hydrothermal approach.Significant findings: The all-solid-state asymmetric supercapacitor device, Sn-Ni MF@Ni//AC, exhibited excellent electrochemical storage capacity (214.67 F/g at 1.0 A/g) and excellent high-rate cycling stability of 90% over 6000 cycles. The Sn-Ni MF@Ni//AC nanostructured device exhibited high energy and power densities of 66.87 Wh/kg at 747.67 W/kg, respectively, at a discharge time of 322 s. The remarkable electrochemical storage properties of Sn-Ni MF@Ni nanostructures can be attributed to their unique SnO and NiO bimetallic oxide phases on NF substrates. They are comparable to those of drop-cast Sn-Ni MFs on NF electrodes.

MOF-derived heterostructured C@VO2 @V2O5 for stable aqueous zinc-ion batteries cathode

Rationally designed cathode materials with high specific capacity and excellent cycling stability are indispensable for stable and highly efficient aqueous zinc-ion batteries (AZIBs). The mesoporous nanocomposite C@VO2 @V2O5 is successfully synthesized using the vanadium-based metal-organic framework as precursor by carbonization and subsequent oxidation processes. As the AZIBs cathode, the MOF-derived heterostructured materials display a high specific capacity (376 mAh g−1 at 0.05 A g−1), excellent rate capability (178 mAh g−1 at 5 A g−1) and outstanding long-life cycling (90.3% capacity retention for 2000 cycles at 5 A g−1). The promising electrochemical performance is attributed to abundant Zn2+ active sites and rapid intercalation kinetics of Zn2+ originated from the heterojunction structure at the two-phase (VO2 @V2O5) interface and mesoporous structure, and the enhanced electron transport efficiency brought by the the porous carbon skeleton with high conductivity. Furthermore, the synergistic effect of dual-ion co-intercalated energy storage mechanism endows C@VO2 @V2O5 with impressive electrochemical performance. This work demonstrates MOF-derived hetero-structured materials as an alternative cathode for high cyclic stability AZIBs in the future.

Removal of Cr(VI) from aqueous solutions via simultaneous reduction and adsorption by modified bimetallic MOF-derived carbon material Cu@MIL-53(Fe): Performance, kinetics, and mechanism

Cr(VI) has drawn growing concern because of its acute toxicity and strong carcinogenic properties to most organisms. Metal-organic frameworks (MOFs) have attracted broad interest in removing Cr(VI) as a novel porous adsorbent. In this work, a novel modified Cu@MIL-53(Fe) material and its derivatives have been successfully synthesized via solvothermal and calcination methods and applied for Cr(VI) removal. Experimental parameters, such as the amount of the added Cu, the calcination temperature, the pollutant concentrations, the pH value of solution, etc. were optimized. The Cu@MIL-53(Fe) optimized synthesis parameters were determined as a 0.5 M ratio of Cu/Fe and 800 °C of calcination temperature. The Cr(VI) removal capacities were 20.65 mg/g at 180 min and 13.35 mg/g in 15 min, and 45.55% of total chromium and 99.05% of Cr(VI) were removed at a dose of 0.5 g/L, pH = 3, 25 °C. Batch experiments revealed that the reaction process applied for Langmuir adsorption isotherm and pseudo-second-order models most suitable with qm = 724.6 mg/g. Additionally, Cr (VI) could be reduced to less toxic Cr(III) by Fe0 and Cu0 during redox reactions. According to further mechanism analysis, the process was primarily monolayer chemical adsorption, followed by electrostatic interaction, redox reaction co-precipitation and coordination effect, etc. A novel promising method of Cr(VI) removal from acidic water by MOFs adsorption is presented in this study.

Topological defect and sp3/sp2 carbon interface derived from ZIF-8 with linker vacancies for oxygen reduction reaction

Defects in nanocarbon materials can trigger their intriguing electrochemical properties and potential applications, but their synthesis is challenging. Herein, we report the synthesis of ultrathin nitrogen-doped carbon nanosheets with intrinsic defects through the pyrolysis of ZIF-8 with linker vacancies. The as-synthesized electrocatalyst exhibits excellent oxygen reduction reaction (ORR) activity with an onset potential and half-wave potential of 1.05 and 0.873 V vs. RHE, respectively, outperforming the reported metal-free ORR electrocatalysts. It also shows a commercial Pt/C-comparable performance in zinc–air battery with a power density of 154.4 mW cm−2. Characterization and DFT calculation results suggest the adjacent sp3-carbon in carbon pentagon can significantly strengthen the adsorption and activation of oxygen molecules on sp2-carbon, hence the potential determining step is altered and ORR overpotential is lowered. This work highlights a promising green synthesis strategy of MOF-derived metal-free nanocarbon materials for wide application in advanced energy technologies.

Texture Regulation of Metal-Organic Frameworks, Microwave Absorption Mechanism-Oriented Structural Optimization and Design Perspectives.

Texture regulation of metal-organic frameworks (MOFs) is essential for controlling their electromagnetic wave (EMW) absorption properties. This review systematically summarizes the recent advancements in texture regulation strategies for MOFs, including etching and exchange of central ions, etching and exchange of ligands, chemically induced self-assembly, and MOF-on-MOF heterostructure design. Additionally, the EMW absorption mechanisms in approaches based on structure-function dependencies, including nano-micro topological engineering, defect engineering, interface engineering, and hybrid engineering, are comprehensively explored. Finally, current challenges and future research orientation are proposed. This review aims to provide new perspectives for designing MOF-derived EMW-absorption materials to achieve essential breakthroughs in mechanistic investigations in this promising field.

Electrocatalytic Reduction of Carbon Dioxide to High-Value Multicarbon Products with Metal–Organic Frameworks and Their Derived Materials

The electrocatalytic carbon dioxide reduction reaction (CO2RR) holds great potential in promoting carbon neutral through effectively converting CO2 molecules to useful chemicals and fuels. The high-efficiency electrochemical conversion of CO2 to single-carbon products has been well realized, while more efforts are needed for the generation of high-value multicarbon products. Metal–organic frameworks (MOFs), featuring porous structures, high chemical tunability, and ultralarge surface area, have attracted increasing attention in the electrochemical CO2RR. Herein, we review the recent progress of electrocatalytic CO2RR on MOF-based materials toward multicarbon products. First, the structure of MOFs is briefly introduced. Then, the electrocatalytic CO2RR performance and the corresponding catalytic mechanism of pristine MOFs (classified according to the kind of organic ligands/linkers) and MOF-derived materials (including metal nanomaterials, single-atom catalysts and nanocomposites) toward the multicarbon product generation are systematically discussed. Finally, critical challenges and potential opportunities are highlighted to inspire the rational design and targeted synthesis of advanced MOF-based materials for high-performance electrocatalytic CO2 reduction toward multicarbon products.

Front Cover: Metal‐Organic‐Frameworks and Their Derived Materials in Photo‐Thermal Catalysis (Eur. J. Inorg. Chem. 28/2022)

The Front Cover shows the two routes in which metal-organic frameworks (MOFs) can participate in photo-thermal reactions. In the case of MOF-based composites, MOFs can act as hosts for plasmonic metal nanoparticles that, upon irradiation, are able to drive chemical reactions through high-energy electrons and/or thermal enhancement. In the case of MOF-derived materials, MOFs play a role as sacrificial templates to create new materials based on highly dispersed metal nanoparticles embedded into a carbon matrix. These latter materials benefit from the outstanding light-to-heat conversion and broadband absorption of carbon structures. Both approaches mentioned above represent promising pathways for the implementation of MOFs as photo-thermal catalysts for the production of solar fuels and chemicals. More information can be found in the Review by J. Gascon and co-workers.

Metal-Organic Frameworks (MOFs) Derived Materials Used in Zn-Air Battery.

It is necessary to develop new energy technologies because of serious environmental problems. As one of the most promising electrochemical energy conversion and storage devices, the Zn–air battery has attracted extensive research in recent years due to the advantages of abundant resources, low price, high energy density, and high reduction potential. However, the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) of Zn–air battery during discharge and charge have complicated multi-electron transfer processes with slow reaction kinetics. It is important to develop efficient and stable oxygen electrocatalysts. At present, single-function catalysts such as Pt/C, RuO2, and IrO2 are regarded as the benchmark catalysts for ORR and OER, respectively. However, the large-scale application of Zn–air battery is limited by the few sources of the precious metal catalysts, as well as their high costs, and poor long-term stability. Therefore, designing bifunctional electrocatalysts with excellent activity and stability using resource-rich non-noble metals is the key to improving ORR/OER reaction kinetics and promoting the commercial application of the Zn–air battery. Metal–organic framework (MOF) is a kind of porous crystal material composed of metal ions/clusters connected by organic ligands, which has the characteristics of adjustable porosity, highly ordered pore structure, low crystal density, and large specific surface area. MOFs and their derivatives show remarkable performance in promoting oxygen reaction, and are a promising candidate material for oxygen electrocatalysts. Herein, this review summarizes the latest progress in advanced MOF-derived materials such as oxygen electrocatalysts in a Zn–air battery. Firstly, the composition and working principle of the Zn–air battery are introduced. Then, the related reaction mechanism of ORR/OER is briefly described. After that, the latest developments in ORR/OER electrocatalysts for Zn–air batteries are introduced in detail from two aspects: (i) non-precious metal catalysts (NPMC) derived from MOF materials, including single transition metals and bimetallic catalysts with Co, Fe, Mn, Cu, etc.; (ii) metal-free catalysts derived from MOF materials, including heteroatom-doped MOF materials and MOF/graphene oxide (GO) composite materials. At the end of the paper, we also put forward the challenges and prospects of designing bifunctional oxygen electrocatalysts with high activity and stability derived from MOF materials for Zn–air battery.

Peroxydisulfate activation by 2D MOF-derived Ni/Fe3O4 nanoparticles decorated in 3D graphene oxide network

Metal organic framework (MOF)-derived materials normally have three-dimensional (3D) structure, while little attention has been paid to two-dimensional (2D) MOF-derived materials with high catalytic activity. Nevertheless, the underlying agglomeration and metal leaching issues of 2D MOF-derived catalysts hinder their real applications. In this work, we report a bimetallic nanocomposite (Ni-Fe-C-600-acid/GO) derived from 2D Ni-Fe-MOF and graphene oxide (GO) network. Employing Ni(0) and Fe3O4 as active site, the Ni-Fe-C-600-acid/GO shows high efficiency in peroxydisulfate (PDS) activation for the removal of p-chloroaniline (PCA), and the catalyst/PCA dosage ratio (0.8) is substantially lower than those of the previous studies (3.9–156.9). The prepared catalysts demonstrate high catalytic activity over a wide pH range of 3–9 and maintain high efficiency after five cycles with good tolerance to inorganic anions. The singlet oxygen is identified as the predominant active species and relatively weak contributions from sulfate free radicals and hydroxyl radicals are confirmed. This catalysis system presents new insights in 2D MOF-derived catalysts in advanced oxidation processes.

Metal-organic frameworks (MOFs)-derived Co3O4@N-doped carbon as an electrode materials for supercapacitor

Pyrolysis of cobalt (Co)-based metal-organic frameworks (MOF) was used to synthesize Co3O4@N-doped C composites. The hierarchical porous structure of zeolitic imidazolate frameworks (ZIF-67) was synthesized using a triethylamine-assisted method in water and room temperature. ZIF-67 was used as a precursor for the synthesis of Co3O4@N-doped C. The material was characterized using X-ray diffraction (XRD), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), high-resolution TEM (HR-TEM), and X-ray photoelectron microscope (XPS). The carbon content and hierarchical porous structure of ZIF-67 enhanced the electron and ion transport. As a result of these advantages, the Co3O4@N-doped C electrode demonstrated improved capacitive performance, with a high specific capacitance of 709 F g−1 at 1 A g−1 and a reasonable rate capability after 5000 cycles. The simple synthesis procedure and the high electrochemical performance enable promising electroactive materials for supercapacitors using MOF-derived materials.

Lattice doping of Zn boosts oxygen vacancies in Co3O4 Nanocages: Improving persulfate activation via forming Surface-Activated complex

The presence of oxygen vacancies (OVs) promotes persulfate activation. However, rational modulation of OVs without compromising the inherent structure of catalysts is challenging. Herein, novel OVs-enriched hollow ZnCo2O4 nanocages are synthesized based on a bimetallic ZIF-67@ZIF-8 precursor for efficient peroxydisulfate (PDS) activation. The incorporation of Zn into the lattice of Co3O4 boosts the number of OVs in the catalysts while preserving the morphology of Co3O4 nanocages derived from metal-organic framework (MOFs) templates. As a result, the degradation rate of organic pollutants such as bisphenol A is improved by over 20 times in the developed PDS activation system. OVs promote the formation of a surface-activated complex from PDS onto the catalyst surface, which can subsequently deprive electrons from pollutants. The developed PDS activation system is resistant to Cl−, NO3− and humic acid at environmental concentrations. This system adapts to selectively degrade organic pollutants with low ionic potential, and shows applicable potential in practical packaging wastewater treatment. The decreased catalytic performance of catalysts during utilization can be recovered with a facile thermal treatment. Our work constructs OV active sites on Co3O4 nanocages while preserving their original structural superiorities, providing a new strategy to functionalize MOF-derived materials.

Metal-Organic Framework-Derived Electrocatalysts Competent for the Conversion of Acrylonitrile to Adiponitrile.

Electrochemical conversion of acrylonitrile (AN) to produce adiponitrile (ADN), the raw material for the production of Nylon 66, has become a crucial process owing to the increasing market demand of Nylon 66. Although the metallic Pb or Cd electrodes are commonly used for this reaction, the use of electrocatalysts or electrodes modified with catalysts has been barely investigated. In this study, nanoporous and electrically conductive metal-organic framework (MOF)-derived materials composed of Pb, PbO, and carbon are synthesized by carbonizing a Pb-based MOF through thermal treatments, and these MOF-derived materials are served as electrocatalysts for the electrosynthesis of ADN. The crystallinity, morphology, elemental composition, porosity, electrical conductivity, and electrochemically active surface area of each MOF-derived material are investigated. Mass-transport-corrected Tafel analysis is used to probe the enhanced kinetics for the electrochemical reduction of AN occurring at the electrode modified with the MOF-derived material. Electrolytic experiments at various applied potentials are conducted to quantify the production rate and Faradaic efficiency toward ADN, and the result shows that the MOF-derived materials can act as electrocatalysts to initiate the electrochemical reduction of AN to produce ADN at a reduced overpotential. The optimal MOF-derived electrocatalyst can achieve a Faradaic efficiency of 67% toward ADN at an applied potential of -0.85 V versus reversible hydrogen electrode─a much lower overpotential compared to that typically required for this reaction without the use of catalysts. Findings here shed light on the design and development of advanced electrocatalysts to boost the performances for the electrosynthesis of ADN.

Novel colorimetric aptasensor based on MOF-derived materials and its applications for organophosphorus pesticides determination

For the visual detection of four organophosphorus pesticides (OPs), a colorimetric aptasensor was developed based on aptamer-mediated bimetallic metal-organic frameworks (MOFs) nano-polymers. Fe-Co magnetic nanoparticles (MNPs) and Fe-N-C nanozymes were prepared based on pyrolytic reaction, and were labeled with broad spectrum aptamers and complementary chains of organophosphorus pesticides respectively. The hybridization of aptamers and complementary chains led to the formation of nano-polymers. In the presence of target pesticides, they competed with complementary chains for aptamers on Fe-Co MNPs, resulting in a large number of Fe-N-C nanozymes signal labels being released into the supernatant. Fe-N-C nanozymes showed similar activity to peroxidase and catalyzed the 3,3′,5,5′-tetramethylbenzidine-hydrogen peroxide (TMB-H2O2) color system to turn the solution blue-green under mild conditions. The magnetic probes had good selectivity and sensitivity, and were easily separated by magnetic absorption. The sensor functioned well under optimal conditions, demonstrating good stability and specificity for four pesticides: phorate, profenofos, isocarbophos and omethoate, and the detection limits of four pesticides were as low as 0.16 ng/mL, 0.16 ng/mL, 0.03 ng/mL and 1.6 ng/mL respectively, and the recovery rate of OPs residue in vegetable samples was satisfactory. The work described here provided a simple, rapid and sensitive way to construct a biosensor.

Metal-organic frameworks-derived Zn-Ni-P nanostructures as high performance electrode materials for electrochemical sensing

• MOF-derived bimetallic Zn-Ni-P nanostructures were fabricated by scalable and facile strategy. • The MOFs-derived Zn-Ni-P has flower-like structure that built from small 2D nanosheets. • These materials offer excellent electrocatalytic activity toward isoprenaline oxidation. • This superb electrocatalytic activity can be due to the synergistic effects and unique structures. The fabrication of hierarchical nanostructure based on metal–organic frameworks (MOFs)-derived transition-metal phosphides (TMPs) has become a hot topic in electrochemical sensor application owing to its unique properties. Herein, a scalable and facile strategy was proposed to prepare MOF-derived bimetallic Zn-Ni-P nanostructures. The material characterization showed that MOFs-derived Zn-Ni-P has flower-like structure that built from small 2D nanosheets. The MOFs-derived Zn-Ni-P was prepared via a facile phosphorization of Zn-Ni-MOF precursor in N 2 atmosphere. This MOF-derived TMPs electrode materials offer excellent electrocatalytic activity toward isoprenaline (IPN) oxidation. In addition, the electrode shows wide two linear range (0.2 µM −5 mM and 5 mM-14 mM), short response time (<1s), low detection limit (0.06 µM), good sensitivity (66.748 μA mM −1 ), desirable repeatability and reproducibility (RSD < 3.5%), and capability for measuring IPN in real sample, which are comparable or better than most reported works for measuring IPN. This improvement can be due to the synergistic effects of multiple catalytic centers, high surface area, facilitated mass, and electron transfer.

HCl-activated porous nitrogen-doped carbon nanopolyhedras with abundant hierarchical pores for ultrafast desalination

Exploring an emerging carbon-based material with optimized structure and controlled porosity is of significance for further heightening the capacitive deionization (CDI) performance and solving the problem of emergency fresh water supply. Herein, a porous nitrogen-doped carbon nanopolyhedra with hierarchical pores prepared via using zeolite-type metal-organic framework (ZIF-8) as precursor is reported and used for CDI. In order to prepare the nanomaterials with abundant hierarchical pore structure, the synthetic route of carbonization followed by HCl-activation is adopted. The resulting nitrogen-doped carbon materials exhibit a bimodal porosity containing micro- and meso-pores, high specific surface area, and numerous exposed adsorption active sites. The excellent performance in structure ensures the ultrahigh desalination capacity of 37.52 mg g−1 and excellent recyclability (retained 90% over 30 cycles) of the as-prepared carbon electrode material. Notably, the above electrode demonstrates ultrafast desalination rate of 16.01 mg g−1 min−1, which is 2–8 times faster than the conventional carbon materials. This present work may provide a new insight for developing efficient MOF-derived CDI electrode materials and realizing rapid water resource supply in emergencies such as outdoor survival or unexpected natural disasters.

MOFs-Derived Three-Phase Microspheres: Morphology Preservation and Electromagnetic Wave Absorption.

Reasonable structural design and composition control are the dominant factors for tuning the electromagnetic absorbing properties of materials. In this paper, microspheres composed of NiO, Ni, and Co3O4 nanoparticles (NCMO) were successfully synthesized using a mild oxidation method. Benefiting from the multi-component composition and a unique microstructure, the RLmin of CNMO can reach −46.8 dB at 17 GHz, with an effective absorption bandwidth of 4.1 GHz (13.9–18 GHz). The absorbing properties and the absorbing mechanism analysis showed that the microsphere-structured NCMO composed of multi-component nanoparticles enhanced the interface polarization, thereby improving the absorption performance. This research provides a new avenue for MOF-derived oxide materials with excellent electromagnetic wave absorbing properties.