TRANSACTIONS OF TIANJIN UNIVERSITY
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2025
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IF 8.5
Song Yanyan,Sun Zhichao,Sun Jiamin,Liu Ying-Ya,Wang Anjie,Peng Chong
The development of efficient photocatalysts for selective organic transformations under visible light remains a major challenge in sustainable chemistry. In this study, we present a straightforward solvothermal strategy for fabricating a defect-engineered ZrO 2 /UiO-66-NH 2 hybrid material with abundant oxygen vacancies, enabling the visible-light-driven oxidation of benzyl alcohol to benzaldehyde. By optimizing the solvothermal treatment duration, the composite (UiO-66-NH 2 -2 h) achieves a 74.1% conversion of benzyl alcohol with > 99% selectivity toward benzaldehyde under mild conditions, substantially outperforming pristine UiO-66-NH 2 . Structural and mechanistic studies reveal that the solvothermal process induces the in situ formation of ultrasmall, uniformly dispersed ZrO 2 nanoparticles (~ 2.3 nm) within the MOF matrix, while simultaneously generating abundant oxygen vacancies, as confirmed by XPS, EPR, and HRTEM analyses. The defect-mediated electronic structure of the ZrO 2 /UiO-66-NH 2 hybrid enhances visible-light absorption, facilitates charge carrier separation, and promotes efficient activation of O 2 into superoxide radicals (·O 2 − ), the primary reactive species. Transient photocurrent measurements and electrochemical impedance spectroscopy further verify the improved charge separation efficiency. The synergistic interplay between oxygen vacancies and the intimate ZrO 2 /UiO-66-NH 2 interface provides a unique defect-mediated charge transfer pathway, distinguishing this system from conventional heterojunctions. This study demonstrates a facile, one-step approach to integrate defect engineering with interfacial hybridization in MOF-based photocatalysts, offering a scalable route for solar-driven organic synthesis. Graphical
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Xian Zhang,Yuhang Yang,Jiage Yu,Ziming Li,Youyong Zhang,Xiangsheng Xie,Zhongping Zhang,Yunfeng Guan,Yuqiang Pi,Feng Wang,Yu Ding
Various strategies have shown promise for addressing the volume expansion issue of silicon (Si)-based anode materials and enhancing their electrochemical performance, such as nanocrystallization and the use of carbon-encapsulated nano-Si particles. However, the agglomeration of nano-Si particles remains a challenge, limiting their full potential. In this study, Zn-MOF-74 was employed to improve the dispersion of nano-Si powder in a carbon source. Subsequently, polyacrylonitrile was used in an electrospinning process to prepare an effective coating, followed by heat treatment to prepare nitrogen-doped Si/C flexible anode composites. The influence of the coating degree on electrochemical performance was investigated, and the Si/C-MOF-74/CNFs-2 composite prepared with 30.3 wt% nano-Si particles exhibited specific discharge capacities of 1030.1 mAh·g −1 after 150 cycles at 0.1 A·g −1 , 610.8 mAh·g −1 after 300 cycles at 1.0 A·g −1 , and 409.1 mAh·g −1 after 300 cycles at 2.0 A·g −1 .
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
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IF 4.6
Jialong Li,Shiye Cai,C. Srinivasakannan,Tong Han,Gang Xue,Li Wang,Yaping Wang,Xinhui Duan
A hollow octahedral NiCo 2 S 4 /carbon composite was rationally constructed through precursor regulation, sulfidation, and subsequent carbonization using a Cu-MOF-derived template. Benefiting from the well-preserved hollow architecture, uniformly distributed NiCo 2 S 4 active shell, and conductive carbon framework, the optimized 3-NiCo 2 S 4 @HC sample exhibits enhanced electrochemical performance as a supercapacitor electrode. In a three-electrode system, 3-NiCo 2 S 4 @HC delivers a high specific capacity of 858.5 C·g −1 at 1 A·g −1 and retains 84.2% of its initial capacity at 30 A·g −1 . In addition, it shows excellent cycling stability with 94.27% capacity retention after 10,000 cycles at 10 A·g −1 . Kinetic analysis reveals that the charge-storage process involves both diffusion-controlled Faradaic reactions and capacitive contributions, while the hierarchical hollow porous structure facilitates electrolyte infiltration and ion/electron transport. Furthermore, an assembled 3-NiCo 2 S 4 @HC//AC hybrid supercapacitor operates stably up to 1.6 V, delivering an energy density of 54.9 Wh·kg −1 at a power density of 799.9 W·kg −1 , and retaining 84% of its initial capacitance after 10,000 cycles. This work demonstrates that the synergistic integration of hollow structural engineering and carbonization is an effective strategy for developing high-performance Ni Co sulfide-based supercapacitor electrodes.
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JOURNAL OF MATERIALS SCIENCE
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2026
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IF 4.4
Guo Shiquan,Wang Le,Chen Fei,Liu Wei,Li Congju
Pt-based electrocatalysts are recognized as the most effective materials for the oxygen reduction reaction (ORR) in fuel cells. However, their widespread application is hindered by high cost, insufficient stability, and susceptibility to methanol and CO poisoning. Therefore, it is crucial to develop non-precious metal catalysts that are efficient, durable, and tolerant to fuel crossover. Herein, we report a facile synthesis of Fe–N–C catalysts derived from transition metal-doped zeolitic imidazolate frameworks via thermal treatment. In alkaline electrolyte, the obtained catalyst exhibited a half-wave potential of 0.79 V (vs. RHE) for the ORR, only 10 mV lower than that of commercial Pt/C. Moreover, it demonstrated excellent stability with 86.7% current retention after 35,000 s, along with outstanding methanol tolerance. In addition, no significant change in current response was observed upon the addition of 1 M methanol during linear sweep voltammetry. Notably, a direct methanol fuel cell incorporating the Fe–N–C catalyst delivered a peak power density of 13.3 mW cm −2 at 65 ℃. This work highlights the critical role of Fe single atoms in enhancing both ORR activity and methanol tolerance, underscoring the significance in advancing the development of high-performance electrocatalysts for fuel cell applications. Graphical abstract
The alternative text for this image may have been generated using AI.
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高影响因子
ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Tanzeel Riaz Ahmad,Xin Li,Ling Jiang,Jie Jin,Xiupei Yang,Fenglin Tang
Background Hydroquinone (HQ), a widely used industrial chemical, persists in the environment and poses significant health risks, including carcinogenicity, as classified by the WHO. Existing detection methods (e.g., HPLC, GC-MS) rely on sophisticated instruments and complex procedures, limiting their practicality. Colorimetric sensors based on nanozymes offer simplicity and rapidity but often suffer from poor selectivity because of interference from structural isomers (catechol and resorcinol). The development of a high-performance nanozyme with synergistic activity and selective HQ detection remains a critical challenge. Results A bimetallic nanozyme (Cu-MOF@CoNPs) was engineered via a “ship-in-a-bottle” strategy, which successfully confined cobalt nanoparticles (Co NPs) within a porous copper–organic framework (Cu-MOF) scaffold. Characterization (SEM, XRD, FTIR, and XPS) confirmed the successful integration of Co NPs into the Cu-MOF matrix, preserving structural integrity through a pillaring effect while enhancing active site exposure. The composite exhibited superior peroxidase-like activity, with Michaelis constants ( K m ) of 0.39 mM (TMB) and 0.18 mM (H 2 O 2 ), indicating higher substrate affinity than that of natural horseradish peroxidase (HRP). Catalysis was driven by synergistic Cu–Co electron transfer, generating holes (h + ) and superoxide radicals (•O 2 − ). A “signal-off” colorimetric sensor was constructed on the basis of the HQinduced reduction of oxidized TMB (oxTMB), achieving a linear range of 0.2–12 μM, a low detection limit of 65 nM, and high selectivity for HQ over structural isomers (catechol and resorcinol) due to steric confinement and favorable redox kinetics, as verified through expanded interference studies. Practical applicability was validated in tap water, lake water, soil extracts, and cosmetic samples, with recoveries of 94–110% and relative standard deviations <3.5%. Significance The Cu-MOF@CoNPs nanozyme-based sensor provides a cost-effective, portable platform for onsite HQ detection in environmental and consumer safety monitoring. Its high sensitivity, selectivity, and stability highlight the potential of hierarchical MOF-confined bimetallic nanozymes as robust tools for reliable phenolic pollutant analysis.
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Industrial Chemistry & Materials
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2026
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IF 11.9
Yang Liu,Zhao-Di Yang,Rui Zhang,Yingchao Lai,Yu Zhang,Guiling Zhang
Electrocatalytic water splitting, consisting of anodic oxygen evolution reaction (OER) and cathodic hydrogen evolution reaction (HER), represents a promising renewable energy technology for producing ultra-high purity hydrogen through efficient energy conversion and storage. However, the practical implementation of this technology in alkaline environments is hindered by the sluggish kinetics of both HER and OER, which significantly limit water splitting efficiency.The development of highly active and stable alkaline HER/OER electrocatalysts is urgently needed yet remains challenging.In this work, we synthesized a novel two-dimensional (2D) highly conjugated COF/MOF composite (COF-C4N/THQ-M) through a post-synthesis method. This method enables controlled growth of part of COF-C4N at the edges of THQ-M MOF to prevent structural disintegration of THQ-M, consequently to enhance surface charge transfer efficiency and further to improve catalytic activity and stability. By regulating metal sites, COF-C4N/THQ-Co and COF-C4N/THQ-Co2Fe1 are proposed to be optimal alkaline HER electrocatalysts with an overpotential of 58 mV at -10 mA cm -2 and alkaline OER electrocatalyst with 314 mV at 10 mA cm -2 , respectively, superior to most of the reported non-precious metals electrocatalysts. The charge transfer characteristics and the pathways of alkaline HER and OER were calculated based on DFT calculations to reveal the synergistic mechanism of COF-C4N and THQ-M. This work provides a novel idea for developing highperformance bifunctional electrocatalysts for alkaline water splitting applications based on hybrid highly conjugated COF/MOF systems.
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CERAMICS INTERNATIONAL
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2026
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IF 5.6
Yanhu Li,Qinhe Pan,Kaixiang Shi,Quanbing Liu,Yanan Guo,Qingji Wang
Metal-organic-framework (MOF)-derived oxide is a promising gas-sensing material candidate because of its high surface area, porosity and structural diversity. Utilizing Aerosol-assisted chemical vapor deposition (AACVD), the fabrication of MOF-derived films performs characteristic morphology and controlled size, which greatly improve the gas-sensing performance. Herein, the heterojunction interface between SnO 2 nanorods and MOF-derived Co 3 O 4 nanoparticles was prepared by two step AACVD. Firstly, SnO 2 nanorods were directly grown on flat electrode. Subsequently, size-controlled MOF-derived Co 3 O 4 nanoparticles were coated on SnO 2 nanorods. The hydrogen sensors were developed based on the above sensing materials with different deposition time ( 0, 30, 40 and 50 min) to demonstrate gas-sensing performance. The Co 3 O 4 /SnO 2 -40 sensor exhibits a response value of 305 % to 100 ppm of H 2 at 310°C, which is 4.4 times of the SnO 2 sensor. Moreover, the Co 3 O 4 /SnO 2 -40 sensor retains a measurable response of 4 % even at an extremely low hydrogen concentration of 200 ppb. The superior sensing performance of this sensor can be attributed to the large surface area and the p-n heterojunction interface. Consequently, the construction of heterojunction via AACVD offers an approach for fabricating high performance hydrogen sensors.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 4
·239
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IF 5.4
Li Guangyan,Cheng Xiu,Zhu Minnan,Tian Yayang,Chen Linfeng
To address the need for rapid detection of profenofos (PFF) residues, we developed a self-cascaded colorimetric sensor using the bifunctional nanozyme Ce-UiO-66@His, prepared by doping histidine (His) into Ce-UiO-66. The introduction of His optimized the valence state distribution of cerium and increased the concentration of oxygen vacancies, thereby endowing Ce-UiO-66@His with enhanced phosphatase-like and laccase-like activities. Crucially, these two enzymes can efficiently catalyze in sequence under the same catalytic conditions, thereby achieving an integrated self-cascaded catalytic reaction of PFF. Specifically, the phosphatase-like activity hydrolyzes PFF to generate 4-bromo-2-chlorophenol, which is then oxidized by the laccase-like activity and coupled with 4-aminoantipyrine to form a red quinone-imine dye with strong absorbance. This self-cascaded, dual-recognition system provides exceptional selectivity and high sensitivity for PFF, with a detection limit of 0.71 µg/mL. Furthermore, by integrating smartphones and RGB recognition, a portable photo-colorimetric method was developed that realizes rapid and visual quantification of PFF. This work not only presents a new strategy for rapid monitoring of PFF residues but also offers insights into designing efficient biomimetic self-cascaded sensing systems. Graphical abstract
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PubMed
高影响因子
ACS Applied Energy Materials
·
2019
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IF 0
Yao Xiao,Wei Wei,Meijiao Zhang,Sa Jiao,Yuchuan Shi,Shujiang Ding
Metal–organic frameworks (MOFs) have emerged as one class of the most promising electrode materials for supercapacitors because of their high surface area and tunable pore structures. The development of MOF heterostructures based on high-quality graphene (HQG) which aims at superior capacitive properties while overcoming poor solution processability and reactivity of HQG is of great concern. In this work, a heterolayered MOF composite was prepared by a facile glucose modification of HQG and controlled nucleation and growth of lamellar Ni-MOF on the HQG surface. The introduction of oxygen-containing functionalities in our approach not only improves the interfacial interactions to form two-dimensional heterostructures but also enhanced the synergistic effects between Ni-MOF and HQG substrates. The constructed GM-LEG@Ni-MOF exhibits excellent capacitance of 987.6 F g–1 at the current density of 0.5 A g–1 and a high capacity retention (85.6%) after 3000 cycles, owing to its favorable electrochemical kinetics and highly structural stability.
研究领域:
材料科学
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电化学
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纳米技术
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储能
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2022
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IF 24.319
Ge Fang,Ruonan Kang,Yu Chong,Liming Wang,Chuanqiang Wu,Cuicui Ge
In this study, the spatial location effect of the incorporated metal atoms on the hydrolysis activity of metal organic framework-based nanomaterials (MOFs) was investigated. UiO-type MOFs incorporated with single-atom Cu at different spatial positions were prepared and their hydrolysis activity towards phosphoester bonds was found to be highly depended on the location of the atomically dispersed Cu atoms. Especially, the attachment of Cu atoms to ligand (UiO-67-Cu N ) resulted in the most significant increase of their hydrolysis activity, which can be attributed to the elevated oxygen vacancies and increased Lewis acidity of MOFs. As a result, UiO-67-Cu N efficiently catalyzed the cleavage of DNA acting as DNA hydrolases, thereby effectively inhibiting the horizontal gene transfer of ARGs and eliminating bacterial resistance to antibiotic. This study opens up new prospects for the rational design of high-performance MOF-based DNA hydrolases and developing new treatment strategies for the removal of ARGs.
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CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Lingya Fei,Cheng Chen,Liguo Shen,Yuyao Zhang,Boya Wang,Jiujing Xu,Bisheng Li,Saleem Raza,Hongjun Lin
Assembling metal–organic framework (MOF) microcrystals into macroscopic membrane structure is of vital importance for the development of high-performance MOF-based membranes. However, most MOFs possess poor solution processibility due to their low colloidal and chemical stability. Herein, we report a facile approach that uses graphene oxide (GO) as two-dimensional (2D) nano-surfactant to assist the dispersion and assembly of superhydrophilic amino acid-based Zr-MOF microcrystals, MIP-202(Zr), into a bulge-structured membrane. The incorporation of superhydrophilic MIP-202(Zr) with GO laminates endowed the resultant membrane with desired two-dimensional/three-dimensional (2D/3D) hybrid nanochannels and stronger hydrophilicity. Benefiting from these features, the obtained GO/MIP-202(Zr) membrane exhibited superior water permeance than pure GO membrane and many other GO/MOF composite membranes. The strengthened permeation performance could also be well-maintained with satisfied rejection performances when utilized for dye molecule rejection. The dye molecule rejection process was closely associated with their size, charge and configuration. Moreover, the GO/MIP-202(Zr) membrane showed improved antifouling performance compared with pure GO membrane, demonstrating its superiority in the practical separation process. Our results provide essential reference values for the assembly of MOF microcrystals into macroscopic membrane structures and their application in water treatment .
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Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 48
·25453-25462
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IF 14.511
Shaoyuan Yu,Jingshi Dong,He Wang,Sirui Li,Hang Zhu,Tianye Yang
In this study, we have successfully fabricated high-performance trimethylamine (TMA) sensors. Defect-engineering (DE) strategy in which two organic ligands, i.e., dicarboxylate and tricarboxylate coordinated with Zn2+ ions, simultaneously, was adopted to obtain MOF-derived ZnO nanoclusters with tunable surface oxygen vacancies after the annealing process. The coordinate competition is expected to introduce more coordinate unsaturated metal sites (CUSs) in MOF materials and thus introduce more oxygen vacancies in MOF-derived materials. Results of gas sensing tests indicate that the dual ligand sensor (DL4) exhibits optimal TMA sensing performance including a high response value of 270.1, excellent selectivity, and good stability to 20 ppm TMA at a low operating temperature of 140 °C. Results of comprehensive characterization experiments including XPS, UV-vis spectra, PL spectra, and EPR indicate that the extraordinary TMA-sensing performance of the sensor can be attributed to abundant doubly positive oxygen vacancies on the ZnO nanocluster surface. The first-principles calculations including the TMA adsorption energy of the ZnO surface and the corresponding differential charge density were calculated using the software VASP (Vienna Ab initio Simulation Package), which further proved that the surface oxygen vacancy is beneficial to TMA sensing performance improvement. Furthermore, the TMA sensing mechanism is also discussed. The DE MOF-derived preparation strategy is a facile and effective method for designing high-performance metal oxide semiconductor gas sensing materials with tunable surface oxygen vacancies.
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