JOURNAL OF MEMBRANE SCIENCE
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2025
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IF 9
Zhiyuan Huang,Ye Yuan,Weifan Wang,Hao Zheng,Zhi Wang
Mixed matrix membranes (MMMs) have demonstrated remarkable advantages in gas separation applications through the synergistic integration of polymeric matrices and nanostructured reinforcements. While these advanced composite thin-film materials exhibit substantial potential for CO 2 separation, their industrial-scale implementation confronts threefold challenges: elevated manufacturing costs, interfacial compatibility optimization between nanofillers and polymer matrices, and performance enhancement requirements for achieving superior separation efficiency. In this study, the green and economical nanofiller UIO-66-(COOH) 2 (denoted as UC) was strategically selected. A novel strategy involving synergistic modification using Zn 2+ and polyvinylamine (PVAm) was developed to address the critical challenge of severe particle agglomeration and sedimentation. This phenomenon, caused by intense electrostatic interactions between the strongly negatively charged UC and the cationic polymer PVAm during surface modification, was effectively mitigated through the proposed cooperative modification mechanism, resulting in the successful synthesis of P@UC-Zn exhibiting exceptional dispersibility and enhanced compatibility with the polymeric matrix. The fabricated P@UC-Zn-PVAm/mPSf MMMs containing 35 wt% filler exhibited remarkable CO 2 permeance (3250 GPU) and selectivity (166) under feed gas conditions (CO 2 /N 2 = 15/85 vol%, feed pressure: 2 bar). Furthermore, the optimized MMMs demonstrated robust operational stability in simulated flue gas tests and showed potential for applications in carbon dioxide-methane and carbon dioxide-hydrogen separations.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Wantong Wang,Shun Liu,Wenda Wu,Yimei Zhang,Xiaoze Du
Cu-based methanol steam reforming (MSR) catalysts are generally facing the fatal problems of easy sintering at high temperatures and poor long-term stability. In this study, we synthesized a series of Cu-based MSR catalysts supported by pure UiO-66 MOF and GO + UiO-66 composite materials with varying GO oxidation degrees and mass fractions through conventional thermal solvent impregnation. Comprehensively analysis revealed that both the specific surface area and thermal conductivity of the Cu@GO + UiO-66 catalysts exhibited positive correlations with those of their corresponding support materials. The optimal-performing [email protected] wt%GO-0.3+UiO-66 catalyst demonstrated exceptional MSR catalyst performance, achieving 98.50 % methanol conversion at 300 °C with an inlet flow rate of 0.014 ml/min (4.18 h −1 ), while maintaining remarkably low CO selectivity (2.02 %) and high hydrogen productivity (6.82mmol/(min·g)). It also showed outstanding stability with only 10.38 % and 8.06 % decrease in methanol conversion and hydrogen productivity after continuous operation of 96 h. The excellent catalytic performance and stability were attributed to the significant and well-dispersed Cu loading (28.04 wt%), the high specific surface area of 128.83 m 2 /g (BET) and the enhanced thermal conductivity of 0.80W/(m·K) which were achieved through the use of the modified-0.01 wt%GO-0.3+UiO-66 support. Moreover, a minor amount of GO in the support was conducive to the formation of Cu + , and the abundant oxygen vacancies inside the catalyst could further stabilize the Cu + active sites, resulting in the formation of Cu–Zr-O x interfacial structures and the strong interaction between Cu species and the support, which effectively enhanced the catalytic performance and stability of the catalyst.
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MICROCHEMICAL JOURNAL
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2026
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IF 5.1
Zhenyu Wang,Tong Qi,Hebin Sun,Ningran Wang,Wenbin Zhang,Jianlong Zhao,Liancheng Zhao,Lijuan Liang
The creation of dependable analytical platforms capable of detecting multiple heavy metal ions (HMIs) concurrently continues to be a significant challenge in environmental monitoring. This study introduces an innovative composite sensing material composed of gold nanoparticles (AuNPs) modified UiO-66-NH 2 metal organic frameworks (MOFs) and carbon nanotubes (CNTs) for simultaneous detection of multiple HMIs. UiO-66-NH 2 , with its extensive specific surface area and three-dimensional porous framework, facilitates effective ion diffusion and target preconcentration. The interconnected CNTs network significantly enhances electron transfer kinetics and expands the electroactive surface area, as confirmed by cyclic voltammetry (CV) analyses. AuNPs can effectively amplify electrochemical reactions and enhance the sensitivity of electrochemical detection. The thoughtful design of this sensing material amalgamates the unique benefits of its constituents. This sensing material attains remarkably low limits of detection (LOD), which is 0.021 μg·L −1 for Cd 2+ and 0.008 μg·L −1 for Pb 2+ , showcasing outstanding resistance to interference in complex environments. The potential applicationsapplications of MOF-based composites in the electrochemical sensors of HMIs are expanded by this methodology.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.7
Haileyesus Hatano Haitosa,Osman Ahmed Zelekew,Pu Chen,Daniel Manaye Kabtamu,Weimao Yan,Hong Wang,Yi-nan Wu
Fluoroquinolone antibiotics like ciprofloxacin (CIP) pose environmental risks when released into water. Herein, a visible-light-active Fe-doped NH 2 -UiO-66(Zr)@AgI Z -scheme heterostructure was prepared via an ion exchange precipitation method. By varying AgI content, reduced particle size and enhanced charge separation for efficient photodegradation was achieved. The optimum composition (Fe-UNH@AgI-20) exhibited a 95.2 % degradation efficiency toward CIP after 60 min of visible-light irradiation. It also showed high removal efficiencies for tetracycline, lomefloxacin, and Rhodamine B. Reaction kinetics followed pseudo-first-order behavior, with rate constants significantly higher than those of pristine NH 2 -UiO-66(Zr) and AgI. The catalyst maintained 85.1 % activity after cycles, indicating good stability. Scavenger tests and electron paramagnetic resonance (EPR) analyses identified holes (h + ), superoxide radical (•O 2 − ), and hydroxyl radical (•OH) as key reactive species. Fe doping enhanced visible-light absorption and created defect sites, while AgI introduction promoted charge separation and suppressed AgI photocorrosion. Under irradiation, a small fraction of Ag + was reduced to metallic Ag, forming an electron bridge that switched the initial type-II heterojunction to a Z -scheme configuration. This Z-scheme mechanism efficiently separated carriers, facilitated generation of ROS, and enabled thorough mineralization of CIP; toxicity predictions showed most products were less mutagenic than CIP, confirming reduced ecological risk. The findings demonstrate that the Fe-doped NH 2 -UiO-66(Zr)@AgI heterostructure is a promising photocatalyst for antibiotic-contaminated wastewater remediation.
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PubMed
高影响因子
WATER AIR AND SOIL POLLUTION
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2026
·Vol. 237
·期 10
·615
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IF 3.5
Tian Jianghao,Xiao Min,Li Shifeng,Bu Ruiying,Yang Xin,Zhang Hongling,Chen Xiaoyang
To overcome membrane permeation selectivity defects and mitigate membrane fouling, a novel nanocomposite, UiO-66-NH 2 /g-C 3 N 5 (UNCN), was designed and synthesized. Notably, this composite overcomes the inherent limitations of UiO-66-NH 2 (limited visible light absorption) and g-C 3 N 5 (low specific surface area). The optimal composite ratio was determined to be 3:7 through systematic optimization. The UNCN-3:7 nanocomposite was then embedded into the polyamide selective layer on polysulfone via in situ interfacial polymerization under optimal conditions, resulting in a thin film nanocomposite (TFN) Nanofiltration membrane. Characterization revealed that the UNCN-3:7 Nanocomposites were uniformly distributed within the polyamide (PA) matrix. The resulting TFN Nanofiltration membrane possessed an ultrathin, positively charged selective layer with enhanced hydrophilicity, evidenced by a reduction in water contact angle from 60.3° to 47.3°. It exhibited a 43% increase in pure water permeability compared to the unmodified thin film composite (TFC) membrane (52.7 vs. 36.9 L·m −2 ·h −1 ·bar −1 ), while maintaining an excellent Na 2 SO 4 retention rate (> 96%). Furthermore, the membrane demonstrated excellent photocatalytic degradation performance, superior anti-fouling properties (flux recovery rate > 92%), and stable long-term operation. These results indicate that the construction of the novel UNCN nanocomposite Nanofiltration membrane presents an effective strategy to address membrane fouling issues.
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Journal of Materials Chemistry A
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2026
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IF 9.2
Yunqi Zhang,Tianyu Zhang,Yifei Ye,Xinmeng Xu,Wenjuan Xiang,Xiubing Huang,Ge Wang
The development of catalytic activity for non-noble metals at low temperature features significant value for green chemical production with high economic interest. This work has successfully customized a series of ligand-functionalized and hierarchically porous Ce-UiO-66-X (HP-U(Ce)-X, -X= -NH2, -H, -NO2, -Br) as supports through the soft template methods, achieving the organic combination of bifunctional structures, providing abundant mesoporous channels for high exposure of guest Ni sites and efficient mass transfer of reaction substrates. The presence of electron-withdrawing/donating groups also facilitates electronic structure modification of Ni species. Therefore, with the selection of optimal -Br and synergistic improvement of mesoporous structures by formic acid (FA) and nitric acid (HNO3), Ni loaded on HP-U(Ce)-Br-6-4 obtains the lowest electron density and outstanding accessibility, reaching 100% conversion of dicyclopentadiene (DCPD) and ~100% selectivity for tetrahydrodicyclopentadiene (THDCPD) in only 30 min at 70 ℃ (while selectivity up to 95% at 60 ℃). This study provides new insight and guidance for performance modulation of non-noble metal based catalysts and rational integration of multifunctional structures in porous materials.
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JOURNAL OF HAZARDOUS MATERIALS
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2020
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IF 9.038
Weixia Yang,Meijie Cheng,Yong Han,Xueli Luo,Chunhua Li,Wenzhi Tang,Tianli Yue,Zhonghong Li
Here, inspired by the poisoning process of heavy metal in human body that the accidental ingested heavy metal can anchor to the functional groups of DNA/protein/enzyme to exert their toxicities during the rapid blood circulation, we developed the adsorbent that enveloped Etched UiO-66 with abundant functional groups into chitosan (CTS) aerogel to capture Pb(II) and Cd(II) in aqueous and apple juice. SEM, XRD and FTIR spectra were used to characterize the Etched UiO-66/CTS aerogel. The results showed that Etched UiO-66/CTS aerogel has a three-dimensional porous structure, and –OH groups of CTS interact with Zr(IV) of Etched UiO-66 to form the stable UiO-66/CTS aerogel. Benefiting from the intrinsic properties of porous and abundant functional groups, Etched UiO-66/CTS aerogel exhibits satisfactory adsorption capacities of 654.9 mg g −1 for Pb(II) and 343.9 mg g −1 for Cd(II) at 45 °C. Moreover, the aerogel shows excellent removal efficiencies of 98.21% for Pb(II) and 98.70% for Cd(II) with initial concentration of 1.0 mg L −1 in apple juice with little effect on the quality of apple juice. This strategy of mimetic heavy metal ions’ poisoning behavior opens up a new avenue for the removal of heavy metal ions in complex matrices.
研究领域:
环境科学
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材料科学
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吸附技术
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食品安全
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纳米材料
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高影响因子
Journal of Cleaner Production
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2023
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IF 11.1
Miaolu He,Yushuang Li,Leihao Feng,Jiaqi Wang,Ze Liu,Lei Wang,Jin Wang,Rui Miao,Xudong Wang
The traditional thin-film composite (TFC) forward osmosis (FO) membrane has problems such as poor water permeability and low lithium concentration selectivity because the separation layer is too thick and has many defect pores. In this study, a thin and dense separation layer was obtained by constructing a sodium alginate (SA)/UiO-66-NH 2 interlayer to control the attachment amount and diffusion rate of m-phenylenediamine (MPD), which enhanced the performance of the membrane. This paper studies the effect and mechanism of the interlayer on the structure and separation performance of the FO membrane, and explores the lithium ion concentration performance of the interlayer membrane. According to the results, based on the strong interaction between the interlayer and MPD, the equilibrium concentration of MPD available for interfacial polymerization was increased and the diffusion rate of MPD was slowed, resulting in the generation of a thin and dense separation layer. Since the interlayer restricted the escape of bubbles formed in the interfacial polymerization, the separation layer showed a leaf-like structure with increased filtration area and water storage space. Due to the reduced thickness of the separation layer and its leaf-like structures, the water flux increased significantly, and the water flux of the interlayer membrane was 47.9% greater than that of the original membrane. Drawing upon the heightened density of the separation layer and secondary separation of the interlayer, the reverse solute flux was lowered by 37.4%. The interlayer membrane exhibited efficient Li + rejection (R>93%) and the concentration ratio of Li + was close to its theoretical concentration ratio at 1.46 ± 0.03.
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Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Wenjun Qu,Huili Wang,Guodong Li,Zhaoping Song,Xiaona Liu,Fengshan Zhang,Wenxia Liu,Dehai Yu,Dandan Ji
The removal of heavy metal ions and medical antibiotics from wastewater is crucial for environmental protection and human health. However, the adsorption capacities and reusability of previously reported adsorbent materials have been insufficient for efficient and sustainable wastewater treatment . In this study, we present a composite material, UiO-66-AMP@PAN, synthesized from metal-organic frameworks (MOFs) and polyacrylonitrile (PAN), which exhibits superior adsorption properties and reusability. The material demonstrates excellent adsorption capacities for heavy metal ions Pb(II) and Cr(VI) as well as the antibiotic tetracycline hydrochloride (TCH), among which the maximum adsorption capacities for Pb(II)(pH=7) and Cr(VI)(pH=5) and antibiotic tetracycline hydrochloride (TCH) (pH=9) were 455.8 mg/g, 442.08 mg/g and 405.92 mg/g, respectively. The adsorption efficiency of UiO-66-AMP@PAN as an adsorbent for adsorbing Pb(II)(pH=7) and Cr(VI)(pH=5) and the antibiotic tetracycline hydrochloride (TCH) (pH=9) remained above 90% even after ten consecutive cycles. The performance of UiO-66-AMP@PAN as an adsorbent has remained unchanged across multiple adsorption-desorption cycles, demonstrating its potential for long-term use in wastewater treatment applications. This innovative approach paves the way for the development of more efficient and environmentally friendly adsorption materials to address the challenges posed by heavy metal ions in wastewater and medical antibiotics.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Rui Zhang,Ziyin Chen,Yu Li,Chen Zhao,Lu Cai,Junrong Yu,Ze Yang,Jiacheng Jiang
The unique properties of MOFs make them the best candidates for catalytic and photocatalytic applications. In this research, the NH 2 -UiO-66 material was prepared by solvothermal method , and different content of NH 2 -UiO-66 was added before the composite growth of Bi 2 S 3 and BiOBr nanomaterials to obtain the NH 2 -UiO-66/BiOBr/Bi 2 S 3 ternary composite material. In order to investigate the relationship between the structure and properties of the catalyst, XRD , FT-IR, SEM , HRTEM , UV–vis DRS, XPS and other characterization technologies were used to analyze the structure, morphology, optical properties of the samples, showing that NH 2 -UiO-66/BiOBr/Bi 2 S 3 have been successfully synthesized. Their photocatalytic performance was evaluated based on the photocatalytic degradation of tetracycline hydrochloride and rhodamine B under visible light . The results show that 2% NH 2 -UiO-66/BiOBr/Bi 2 S 3 has better photocatalytic activity than other materials. Moreover, NH 2 -UiO-66/BiOBr/Bi 2 S 3 also demonstrated good photocatalytic reusability and stability. The formation of Bi 2 S 3 and BiOBr heterojunctions and the introduction of NH 2 -UiO-66 with more active sites increase the carrier performance and separation efficiency. Then the valence band and conduction band values of the semiconductor material are calculated through the M-S curve, combined with the forbidden bandwidth deduced by UV–vis DRS and the experimental results of radical trapping, a double Z-type electron transfer mechanism suitable for this system is inferred. Finally, taking RhB as an example, the degradation path of dye pollutants was studied.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Ning Zhang,Dan Li,Mengyao Mu,Minghua Lu
Increasing the stability of materials and affinity to the target has always been the pursuit. In this paper, the strategy of partially fluorinated metal–organic framework materials (MOFs) was introduced into the field of sample preparation for the first time, and the potential of this method to prepare materials with improved stability and extraction performance against environmental pollutants was verified. The UiO-66-(NH 2 ) 0.58 (4F) 0.42 coating was successfully prepared on carboxyl functionalized stainless steel fiber through covalent bonding method. Owing to the introduction of F element, the UiO-66-(NH 2 ) 0.58 (4F) 0.42 coating exhibited enhanced metal node acidity, hydrophobicity and stability, thus its extraction performance for phthalates (PAEs) was higher than that of pure UiO-66-NH 2 and commercial fiber coatings. The UiO-66-(NH 2 ) 0.58 (4F) 0.42 -coated fiber was coupled with GC–MS to detect PAEs, and the wide linear range (0.03–1000 ng/L), good correlation coefficients (0.9732–0.9998) and low detection limit (0.0039–0.016 ng/L) were obtained. The established method had also been successfully applied to detection of trace PAEs in plastic bags packed milk and bottled liquor with satisfactory recoveries (83.7 ± 5.1–118.1 ± 4.1 %). This research provides a new path for the preparation of environmental pollutant enrichment and removel materials with good performance.
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高影响因子
Journal of Water Process Engineering
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2022
·
IF 7.34
Lin Chen,Fangqing Li,Longjie Jiang,Fudong He,Yufei Wei
Polytetrafluoroethylene (PTFE) hydrophobic membranes used in direct contact membrane distillation (DCMD) processes were prone to fouling and wetting by oil and surfactants, which hampered their broad industrial application. In this work, a new Janus composite membrane was developed by modifying UiO-66-NH 2 with polyvinyl alcohol (PVA) as a cross-linking agent and immobilizing the modified UiO-66-NH 2 on the PTFE membrane by vacuum filtration. By tuning the ratio of PVA to MOF , an optimally proportioned Janus membrane was obtained, and its performance was tested in DCMD experiments through the use of a sodium chloride feed solution containing hexadecane and sodium dodecyl sulfate. The top layer of this Janus membrane exhibited underwater oleophobicity (130.1 ± 0.96°) and hydrophilicity in the air (54.0 ± 0.92°), while the bottom layer is hydrophobic (132.3 ± 0.97°). Compared to the pristine PTFE membrane, the modified Janus membrane demonstrated promising resistance to both membrane fouling and wetting of oils and surfactants. The desalination rate of 99.99% was still achieved within 24 h with the conductivity remaining lower than 10 μS/cm and the flux maintained at 21.3 L/(m 2 ·h). As a result, the Janus composite membrane developed in this study was shown to be a prospective alternative for treating wastewater containing oily substances and surfactants in a resourceful manner.
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