CHEMICAL ENGINEERING JOURNAL
·
2020
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IF 10.652
Mengmeng Zhang,Kun Yang,Junshuo Cui,Haibiao Yu,Yuejiao Wang,Weijun Shan,Zhenning Lou,Ying Xiong
With the ever-increasing of Rare Earth Elements (REEs) in various high technology applications, efficient recovery of REEs from liquid sources is becoming significantly important. In this work, ZIF-8 and UiO-66-NH 2 (U6N) are combined to form a 3D-agaric like core-shell structure hybrid material (U6N@ZIF-8-20), which exhibits good performance in REEs extraction. Due to the abundant adsorption sites of ZIF-8 and the excellent water stability of UiO-66-NH 2 , 3D-agaric like U6N@ZIF-8-20 showed quick adsorption rate (only 10 min to reach equilibrium), high adsorption capacity and selectivity for REEs from water compared to other reported adsorbents. Maximum adsorption capacities of U6N@ZIF-8-20 for neodymium (Nd(III)), europium (Eu(III)), gadolinium (Gd(III)) and erbium (Er(III)) achieved to 249.90, 295.28, 316.22 and 340.95 mg g -1 , respectively. U6N@ZIF-8-20 has superiority in selective adsorption of REEs from Cd(II), Zn(II), Cu(II), Mn(II) and Co(II) coexistence solution. The order of adsorption capacities for REEs is in agreement with the order of their electronegativity, ionic radius and charge density. Moreover, U6N@ZIF-8-20 showed better water stability and recyclability than single MOF. Overall, MOF@MOF hybrid material has efficiency in REEs separation from solutions, and has great advantage in the application of wastewater treating.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Tingting Sun,Xinwei Zhang,Yisheng Hu,Lei Xu,Yahui Zhao
The UiO-66-FP/HPW/TiO 2 heterojunction photocatalytic material is fabricated by one-pot solvothermal method. The crystal structure, elemental composition, morphology, and optical properties of as-prepared catalysts are well-characterized. Subsequently, the synthesized materials’ catalytic activity is evaluated by degrading rhodamine B (RhB) and ofloxacin (OFX) under visible-light illumination. It turns out that the 10 wt% UiO-66-FP/HPW/TiO 2 sample possesses the best efficiency, with 98.6% RhB and 97.2% OFX removed under identical condition, which is 4.68 and 4.14 times than that of HPW/TiO 2 , respectively. The superior efficiency can be ascribed to the construction of UiO-66-FP/HPW/TiO 2 heterostructure, better adsorption capacity of organic contaminants, enhanced visible light response, and lower recombination rate of e − -h + pairs. The quenching effect of distinct scavengers indicates that •OH is an additional significant contributor to the ternary photodegradation system besides •O 2 – and h VB + species. This constitutes another reason for the superior photocatalytic activity of UiO-66-FP/HPW/TiO 2 relative to HPW/TiO 2 . The photo-degradation efficiency of 10 wt% UiO-66-FP/HPW/TiO 2 composite is reduced by 4.68% after running five cycles. Overall, this work presents one type of efficient and reusable TiO 2 -based photocatalysts driven by visible light.
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
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IF 5.6
Yaohong Yang,Yuefeng Huang,Xinjie Yang,Li Liu,Peng Wang,Zhenqiang Kan,Wei Bi,Kaimeng Xu,Guanben Du,Lianpeng Zhang
Bio-based composites can mitigate the pollution issues linked to petroleum-based materials due to their eco-friendly properties. On the other hand, bio-based functionalized metal-organic frameworks have gained attention in the field of flame retardants due to their multi-pathway flame retardant mechanism and environmentally friendly synthesis process. However, its application in wood industry is less. In this work, a novel functional adhesive and coating (ACS-MACS/PA-UiO66-NH 2 ) was developed by using phosphorus-rich biomass phytate functionalized metal-organic framework (MOF) PA-UiO66-NH 2 as a flame retardant and mixed with modified chitosan. Furthermore, using ACS-MACS/PA-UiO66-NH 2 and three-layer wooden boards, a tight cross-linked network was formed through hot pressing dehydration and condensation reactions to prepare multifunctional wood composites. The experimental results indicated that the mechanical properties of the multifunctional wood composites are excellent. Additionally, these wood composites exhibit high levels of charring and graphitization, leading to excellent flame retardancy. The preparation process of these multifunctional wood composites is straightforward, and their excellent properties provide a foundation for the development of high-performance green composite materials.
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高影响因子
APPLIED CATALYSIS A-GENERAL
·
2024
·
IF 4.7
Xin-Hao Shen,Feng Liu,Qin-Qin Chen,Ying Gao,Xiao-Wen Wang,Xin Liu
The efficient degradation of emerging pollutants in water, represented by CBZ, is receiving increasing attention from all sectors of society. Although advanced oxidation reactions represented by Fenton reaction can efficiently degrade emerging pollutants, the problem of iron sludge that comes with it is hindering the further promotion of this technology. Herein, UiO-66(Zr)-2OH material was synthesized by hydrothermal method and loaded with Pd 0 NPs on the surface of the material by in situ reduction. The MOFs-H 2 -Accelerated Catalytic Fenton system was constructed by accelerating the regeneration of Fe(II) in the system by activating the [H] produced by H 2 introduced into the system at room temperature and pressure. Within 180 min, the removal of the target pollutant CZB could reach more than 99 % under the condition of only 25 µmol of Fe(II) and 25 mmol of H 2 O 2 .
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DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2022
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IF 5.477
Yong Pan,Feng Liu,Yong Zhou,Chen Zhu,Haixia Pang,Baoming Xu
Background Phosphorus in wastewater is a major environmental concern. Very small phosphorus inputs in the environment can cause algal blooms that can deplete the dissolved oxygen and decrease the water quality, leading to eutrophication. Furthermore, some algal blooms produce toxins and bacterial growth that can cause human illness through exposure to contaminated water. Therefore, It is necessary to remove phosphorus before it is discharged to the environment. Methods adsorbent enhanced adsorptive ultrafiltration (UF) has recently emerged as an advanced ion recovery technology with membrane filtration function and adsorption function, and is very effective in removing cationic bisphosphate and anionic phosphate. Significant findings Herein, a novel defect-rich and covalently-crosslinked octanoic acid (OA)-UiO-66(Zr)-NH 2 /PVC adsorption ultrafiltration membrane are designed for removal of phosphate ions in water. The OA-UiO-66-NH 2 /PVC-33 membrane achieved the adsorption capacity (∼30 mgg −1 ) and higher removal efficiency (∼90%). The OA-UiO-66(Zr)-NH 2 /PVC ultrafiltration membrane exhibited a higher water flux of 266.9 L/(m 2 ·h·bar) compared to those of pristine PVC and UiO-66-NH 2 /PVC. Filtration and cyclic stability experiments reveal that OA-UiO-66(Zr)-NH 2 /PVC membrane can maintain a high retention capacity and exhibit excellent regeneration performance after 5 cycles.
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DOI
高影响因子
Frontiers of Chemical Science and Engineering
·
2025
·Vol. 19
·期 4
·1-11
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IF 4.5
Shao Siqing,Jin Liping,He Siyuan,Feng Yijing,Guo Wenwen
To achieve fire-resistant epoxy resin (EP), a UiO-66-based novel flame retardant coating (CS@APP@UiO-66) was prepared by modifying UiO-66 with chitosan (CS) and ammonium polyphosphate (APP) through a layer-by-layer (LbL) self-assembly method, which was then introduced into an EP system to improve its fire safety. The results of scanning electron microscopy, X-ray diffraction and Fourier transform infrared spectroscopy show that the unsaturated Zr atoms in the UiO-66 framework provide many active sites conducive to modification, so that the UiO-66 particles, which originally had a regular octahedral structure, are more dispersed by LbL modification without causing doping or distortion issues. The thermogravimetric analysis results indicate that the char residue of EP/2% UiO-66 is increased by 2.52% compared with that of pure EP, indicating that the thermal properties of the EP composite are improved after modification. In addition, the cone test results indicate that EP/2%UiO-66-5L has good flame retardancy and smoke suppression properties, and the peak heat release rate, total smoke production and rate of CO generation values are 25.2%, 5.7% and 38.5% lower than those of the unmodified EP. Moreover, it can be concluded from the Raman test that the graphitization degree of the modified EP composite is strengthened. The above results indicated that after the incorporation of CS@APP@UiO-66 into the EP composites, more char layers formed as physical barriers to prevent the transfer of mass and heat, thus reducing the speed of flame propagation. Therefore, the flame resistance and smoke suppression of the EP composites improved. These favorable characteristics, including high flame retardant efficiency and good smoke suppression, make LbL-functionalized UiO-66 promising for flame retardant polymer applications.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Weibo Lu,Huangwei Ye,Yike Zhu,Yuhan Li,Huan Li,Qing Shen,Jian Chen
The non-destructive, real-time, and visual assessment of fish freshness is crucial for maintaining food quality and safeguarding public health. In this study, a pH-sensitive and colorimetric enhancement film was developed using a carboxymethyl cellulose/anthocyanin/metal-organic framework (CMC-BA-UIO). The concentration of UIO-66 in the film-forming solution significantly influences the mechanical properties and ammonia responsiveness of the indicator film, with the CMC-BA/2.5%UIO-66 variant exhibiting optimal performance. When utilized for real-time fish freshness monitoring at 4 °C, the CMC-BA/2.5%UIO-66 indicator film demonstrated a distinct color transition from purple to yellow, which exhibited a strong correlation with the rot index (TVB-N) of the fish. These findings indicate that the developed indicator film has potential applications in intelligent packaging for monitoring food shelf life, providing a visual alert to producers and consumers regarding food spoilage.
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Shuaitian Jia,Zan Chen,Yinhui Li,Claudia Li,Cuijia Duan,Kang Hui Lim,Sibudjing Kawi
The disposal of waste lithium batteries , especially waste separators, has always been a problem, incineration and burial will cause environmental pollution, therefore, the development of degradable and high-performance separators has become an important challenge. Herein, UiO-66-NH 2 particles were successfully anchored onto bacterial cellulose (BC) separators by epichlorohydrin (ECH) as a crosslinker, then a BC/UiO-66-NH 2 composite separator was prepared by vacuum filtration. The ammonia groups (−NH 2 ) from UiO-66-NH 2 can form hydrogen bonds with PF 6 − in the electrolyte, promoting lithium-ion transference. Additionally, UiO-66-NH 2 can store the electrolyte and tune the porosity of the separator. The lithium ion migration number (0.62) of the battery assembled with BC/UiO-66-NH 2 composite separator increased by 50 % compared to the battery assembled with commercial PP separator (0.45). The discharge specific capacity of the battery assembled with BC/UIO-66-NH 2 composite separator after 50 charge and discharge cycles is 145.4 mAh/g, which is higher than the average discharge specific capacity of 114.3 mAh/g of the battery assembled with PP separator. When the current density is 2C, the minimum discharge capacity of the battery assembled with BC/UiO-66-NH 2 composite separator is 85.3 mAh/g. The electrochemical performance of the BC/UiO-66-NH 2 composite separator is significantly better than that of the commercial PP separator. In addition, -NH 2 can offer a nitrogen source to facilitate degradation of the BC separators, whereby the BC/UiO-66-NH 2 composite separator could be completely degraded in 15 days.
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Ruirui Jin,Jingling Gong,Zhaoyang Li,Bin Xiang,Weimin Liu,Jian Li
The increase in oily wastewater exacerbates global water scarcity, triggering ecological damage and health risks. Although membrane separation technology was widely adopted in oily wastewater treatment due to its high efficiency and energy savings, membrane fouling issues lead to flux decline, increased energy consumption, and reduced membrane lifespan, thereby limiting its application. Therefore, this study proposed an advanced “water absorption-storage” strategy by in-situ growing UiO-66-NH₂ nanoparticles on attapulgite (APT) through carefully designed micro-nano-scale rough structures and chemical interactions, forming a unique biomimetic “corn-like” structure. The APT@UiO-66-NH₂/PEG composite membrane prepared in this study establishes a robust hydration barrier through synergistic interactions between its components, thereby exhibiting both outstanding anti-oil fouling capability and highly efficient, stable oil-water emulsion separation performance. Meanwhile, the in-situ growth of UiO-66-NH₂ on APT effectively resolved the issue of easy detachment between APT and UiO-66-NH₂. Moreover, the abundant hydrophilic functional groups (–OH) in polyethylene glycol (PEG) form hydrogen bonds with UiO-66-NH₂ and APT, further enhancing the structural stability. The obtained APT@UiO-66-NH₂/PEG composite membrane achieved separation efficiencies exceeding 99.8 % for various oil-in-water emulsions, with a separation flux reaching 3020 LMH/bar. After 10 separation cycles and 60 min of continuous operation, the separation performance remained essentially stable. The composite membrane demonstrated excellent chemical durability and mechanical stability in high-concentration acid, alkali, and salt solutions, as well as during bending and abrasion tests. Therefore, this study presents a simple and effective purification solution for practical oily wastewater, with the associated strategies and preparation techniques demonstrating broad application prospects.
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产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2025
·
IF 4.2
Kai Yan,Zhihao Yu,Yingqing Li,Mengyan Guo,Yuanyu Wang,Xuebin Lu
The efficient dehydration of fructose to 5-hydroxymethylfurfural (HMF) is a crucial step in biomass valorization, requiring solid acids with precisely balanced Brønsted acidity. Defect engineering in Zr-based metal–organic frameworks (MOFs), such as UiO-66, is well known to enhance Lewis acidity; however, its impact on tailoring Brønsted acid sites remains insufficiently understood. Here, we demonstrate that defective UiO-66 possesses a dual-origin Brønsted acid system, comprising intrinsic μ3–OH groups and water molecules coordinated to defect-generated Lewis acidic Zr centers (Zr–H2O). The concentration of these Brønsted acid sites can be finely regulated by thermal activation treatment. A volcano-shaped dependence of catalytic activity on activation temperature is observed, with an optimum at 200 °C. At moderate activation temperatures below 200 °C, the removal of physisorbed water exposes both μ3–OH and Zr–H2O sites, maximizing Brønsted acid density and HMF yield. Activation beyond 200 °C reduces both types of Brønsted acid sites, resulting in diminished catalytic performance. This study reveals the cooperative effect of defect engineering and thermal activation in tuning the Brønsted acidity of MOFs, providing a rational strategy for designing highly selective catalysts for the sustainable production of platform chemicals.
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产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Jin Chai,Chunpeng Liu,Hongtian Yang,Yide Han,Yufeng Liu,Ying Zhang,Xia Zhang
The bifunctions of fluorescence activity and peroxidase mimics were well-integrated by a hemin chloride-modified Zr-based metal–organic framework (Hemin@NH2-UiO-66), which can catalyze the oxidation of o-phenylenediamine (OPD) to generate 2,3-diaminophenazine (DAP), presenting typical peroxidase mimic properties. The influence of the introduction of hemin chloride upon the enhanced peroxidase mimic activity was clarified, and the nanozyme catalytic parameters were optimized. Interestingly, the oxidized product of DAP presents strong fluorescence emission at 564 nm; combining it with the intrinsic fluorescence emission of NH2-UiO-66 at 452 nm, a dual-emission system could be built up by the resulting Hemin@NH2-UiO-66 in the presence of definite OPD and H2O2. Moreover, the fluorescence quenching effect (564 nm) was observed by adding l-cysteine (l-Cys); based on that, a straight-line dependence of the fluorescence intensity ratio (I452/I564) upon the concentrations of l-Cys was established. The detection limit was 0.21 μmol, and the analytical selectivity for l-Cys was also demonstrated. The work highlights the idea of combining the intrinsic fluorescence property and nanozyme catalytic activity in a functional MOF, and its special usability is found in the ratiometric fluorescence sensing analyses.
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
·
IF 5.774
Bing Liu,Dan Li,Jie Yao,Hao Sun
This study demonstrated a new method for simultaneously improving the interfacial morphology and gas separation properties of mixed matrix membrane by designing a new type of nanocomposite filler (UiO-66-PEI@[bmim][Tf 2 N]). Nano-sized UiO-66 particle was post-synthetically modified with branched polyethyleneimine (PEI) and then was decorated with ionic liquid. The abundant amino groups in UiO-66-PEI improve the gas separation properties of the MMM due to the affinity between PEI and CO 2 . The ionic liquid acts as a lubricant agent, which is coated on the crystal surface improves the interface morphology of the MMM. Compared to pristine 6FO and MOF/6FO membrane, MOF@IL/6FO membrane has higher gas separation performance. Characterization and gas separation results indicated the UiO-66-PEI@ILs particles were homogeneous dispersed in 6FDA-ODA and promoted CO 2 transport by reversible reaction with amine groups. Consequently, the membrane sample containing 15 wt% loading of the UiO-66-PEI@[bmim][Tf 2 N] filler displayed an optimum CO 2 /CH 4 selectivity of 59.99 for CO 2 and CH 4 mixture gas.
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DOI
高影响因子
危险品化学品经营许可证（带存储）